Data

Measured and checked hearing loops

Installation checks and grouped loop findings, preserving methods, locations, outcomes, sample units and reporting limits.

60 rows
17 sources
Compiled 13 October 2026
Updated 14 October 2026
Version 1.2
Source dates: 18 July 2005 – 31 March 2026

Data licence: CC0 1.0 (public domain dedication).

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Rows distinguish installations or assessed areas, locations with uncertain equipment status, and aggregate findings. Availability, staff knowledge and listening checks do not establish measured field strength. Grouped results overlap some individual rows, and methods differ: do not pool counts or failure percentages. Reported repairs do not establish a measured retest. (Ciolek and Covington 2008; Healthwatch Hackney 2023; Lets Loop Southampton and Healthwatch… 2018; CHHA National 2023)

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Measured and checked hearing loops — 60 rows
Result ID	Row scope	Site	Site type	Country	Year	Source year	Checked	Result	Method	Method detail	Checker type	Checker	Sample	Source ID	Source locator	Funding detail	Limitations	Funding
alfakir-2015-lecture-hall	installation_or_area	Unnamed lecture hall	Lecture hall	not reported	not reported	2015	Field strength at six seating locations	Authors report loop field strength within +/-3 dB at all six tested seating locations.	meter	Contacta Loop-FSM; six randomly chosen seating locations checked before the listener study. The Method describes locations measured from a reference point in the room centre.	researcher	Alfakir and colleagues	Six measurement locations; listener study had 12 participants initially and seven returning for session two.	alfakir-2015	Method, first two paragraphs and session counts; Discussion, opening paragraph; Acknowledgments and Funding	Independent (University of Florida and University of Oklahoma; the authors report no financial support and no conflicts of interest; Contacta, a loop maker, lent the field strength meter)	The Discussion places the hall at a retirement community centre; its name, country and measurement dates are not reported. No complete field map or frequency-response/noise results. Authors cite ANSI/ISA-62382-2012; that reference is not substituted with an assumed hearing-loop standard.	Independent
alva-2013-scottish-loops-all-venues	aggregate	Scottish visitor attractions	Visitor attraction ticket or information point	United Kingdom (Scotland)	not reported	2013	Working loop at main ticket or information point	Three of 21 venues had working loops at the main ticket or information point. The other 18 are not split into missing and faulty loops.	not reported	Equipment and procedure not reported.	charity field team	Action on Hearing Loss Scotland, reported by ALVA/Attractions Management	21 venues; three with working loops at the main ticket or information point.	alva-2013-scottish-loops	Article opening and named working-loop list	Trade body (ALVA publishes Attractions Management news reporting Action on Hearing Loss Scotland’s charity-led checks; project funding is not stated)	Includes the three individually named rows. Do not sum aggregate and individual counts. No test dates or equipment stated.	Trade body
alva-2013-scottish-loops-mcmanus	installation_or_area	McManus Museum, Dundee	Visitor attraction ticket or information point	United Kingdom (Scotland)	not reported	2013	Working loop at main ticket or information point	Working loop reported at the main ticket or information point.	not reported	Equipment and procedure not reported.	charity field team	Action on Hearing Loss Scotland, reported by ALVA/Attractions Management	One installation; listener count not reported.	alva-2013-scottish-loops	Article opening and named working-loop list	Trade body (ALVA publishes Attractions Management news reporting Action on Hearing Loss Scotland’s charity-led checks; project funding is not stated)	Secondary report published in December 2013; dates and methods of checks and individual checker roles not supplied. Three named positive cases selected from 21 venues; not a representative success sample.	Trade body
alva-2013-scottish-loops-st-mungo	installation_or_area	St Mungo's Museum, Glasgow	Visitor attraction ticket or information point	United Kingdom (Scotland)	not reported	2013	Working loop at main ticket or information point	Working loop reported at the main ticket or information point.	not reported	Equipment and procedure not reported.	charity field team	Action on Hearing Loss Scotland, reported by ALVA/Attractions Management	One installation; listener count not reported.	alva-2013-scottish-loops	Article opening and named working-loop list	Trade body (ALVA publishes Attractions Management news reporting Action on Hearing Loss Scotland’s charity-led checks; project funding is not stated)	Secondary report published in December 2013; dates and methods of checks and individual checker roles not supplied. Three named positive cases selected from 21 venues; not a representative success sample.	Trade body
alva-2013-scottish-loops-stirling	installation_or_area	Stirling Castle	Visitor attraction ticket or information point	United Kingdom (Scotland)	not reported	2013	Working loop at main ticket or information point	Working loop reported at the main ticket or information point.	not reported	Equipment and procedure not reported.	charity field team	Action on Hearing Loss Scotland, reported by ALVA/Attractions Management	One installation; listener count not reported.	alva-2013-scottish-loops	Article opening and named working-loop list	Trade body (ALVA publishes Attractions Management news reporting Action on Hearing Loss Scotland’s charity-led checks; project funding is not stated)	Secondary report published in December 2013; dates and methods of checks and individual checker roles not supplied. Three named positive cases selected from 21 venues; not a representative success sample.	Trade body
aohl-2013-visitor-attractions-attractions	aggregate	London visitor attractions	Visitor attractions	United Kingdom (England)	2012	2013	Loop availability; working order	Three of 20 attractions had loops in good working order; of 11 advertising loops, seven actually had one.	not reported	Equipment and procedure not reported.	charity field team	Action on Hearing Loss	20 attractions; separate advertised-loop subset of 11.	aohl-2013-visitor-attractions	Paragraph beginning Hearing loops are essential, containing the 2012 London findings	Independent (Action on Hearing Loss reports its own checks; the article also promotes the charity’s equipment sales and access services; check funding is not stated)	Work took place before the 2012 Olympics. No site-level results, equipment, field readings, listener sample or check funding stated. Article also promotes charity equipment and services.	Independent
aph-2008-parliament-loop-audit-a1	installation_or_area	Parliament House, Canberra: Main committee room 1R0	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A1, printed p. 12	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a2	installation_or_area	Parliament House, Canberra: Committee room 1R0 gallery	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 20-80% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A2, printed p. 13	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a3	installation_or_area	Parliament House, Canberra: Committee room 1R1	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A3, printed p. 14	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a4	installation_or_area	Parliament House, Canberra: Committee room 1R2	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A4, printed p. 15	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a5	installation_or_area	Parliament House, Canberra: Committee room 1R3	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 80-100% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A5, printed p. 16	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a6	installation_or_area	Parliament House, Canberra: Committee room 1R4	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over less than 20% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A6, printed p. 17	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a7	installation_or_area	Parliament House, Canberra: Committee room 2R1	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over less than 20% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A7, printed p. 18	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a8	installation_or_area	Parliament House, Canberra: Committee room 2R2	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 80-100% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A8, printed p. 19	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a9	installation_or_area	Parliament House, Canberra: Committee room 2R3	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A9, printed p. 20	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a10	installation_or_area	Parliament House, Canberra: Committee room 1S2	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over less than 20% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A10, printed p. 21	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a11	installation_or_area	Parliament House, Canberra: Committee room 1S3	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A11, printed p. 22	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a12	installation_or_area	Parliament House, Canberra: Committee room 1S4	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A12, printed p. 23	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a13	installation_or_area	Parliament House, Canberra: Committee room 2S1	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A13, printed p. 24	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a14	installation_or_area	Parliament House, Canberra: Committee room 2S2	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 80-100% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A14, printed p. 25	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a15	installation_or_area	Parliament House, Canberra: Committee room 2S3	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A15, printed p. 26	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a16	installation_or_area	Parliament House, Canberra: House of Representatives floor	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 80-100% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A16, printed p. 27	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a17	installation_or_area	Parliament House, Canberra: House of Representatives gallery second west	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 80-100% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A17, printed p. 28	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a18	installation_or_area	Parliament House, Canberra: House of Representatives gallery first west	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A18, printed p. 29	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a19	installation_or_area	Parliament House, Canberra: House of Representatives gallery first north	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A19, printed p. 30	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a20	installation_or_area	Parliament House, Canberra: House of Representatives gallery first south	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A20, printed p. 31	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a21	installation_or_area	Parliament House, Canberra: Senate gallery second east	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 80-100% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A21, printed p. 32	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a22	installation_or_area	Parliament House, Canberra: Senate gallery second north	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 20-80% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A22, printed p. 33	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a23	installation_or_area	Parliament House, Canberra: Senate gallery second south	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A23, printed p. 34	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a24	installation_or_area	Parliament House, Canberra: Senate gallery first east	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 80-100% of the area.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A24, printed p. 35	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a25	installation_or_area	Parliament House, Canberra: Senate gallery first north	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A25, printed p. 36	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a26	installation_or_area	Parliament House, Canberra: Senate gallery first south	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A26, printed p. 37	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a27	installation_or_area	Parliament House, Canberra: Theatre	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 20-80% of the area. Assessment tied to the indicated labelling.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A27, printed p. 38	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a28	installation_or_area	Parliament House, Canberra: EPCR Blue Room	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 80-100% of the area. Appendix A28 reports above-normal hum from television studio lamps and mains wiring, rising sharply in the northeast corner.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A28, printed p. 39	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a29	installation_or_area	Parliament House, Canberra: Government party room	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A29, printed p. 40	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a30	installation_or_area	Parliament House, Canberra: Opposition party room	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: low base level and excessive signal attenuation; no coverage percentage assigned.	meter	LM Audio ILM12 loop monitor; grid readings after amplifier set-up; noise checked with loop amplifier off.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A30, printed p. 41	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Test dates not reported. First-draft report issued in 2008. Results generally follow amplifier adjustment. Coverage grades are the authors' categories; no full frequency-response test is reported. Noise readings use C weighting.	Government
aph-2008-parliament-loop-audit-a31	installation_or_area	Parliament House, Canberra: Cabinet Room	Parliamentary meeting area	Australia	not reported	2008	Field strength coverage; magnetic background noise	Table 1 grade: suitable signal level over 80-100% of the area.	meter	Partial meter check with low-level pink noise because of system integrity issues; earlier T4 commissioning is mentioned.	government	Department of Parliamentary Services broadcasting support staff	One of 31 audited areas in Parliament House.	aph-2008-parliament-loop-audit	Table 1, printed pp. 10-11; Appendix A31, printed p. 42	Government (an in-house audit by the Australian Parliament's Department of Parliamentary Services of the hearing loops it maintains in Parliament House, carried out by its own broadcasting support staff)	Table 1 gives the highest grade, but Appendix A31 explicitly limits this audit to a partial test. Do not treat the grade as a complete measured coverage result. Test date not reported.	Government
chha-2023-yvr-counter-loops-kiosks	aggregate	Vancouver International Airport: information kiosks	Airport information counters	Canada	2022	2023	Operational status; physical condition	Installer found many systems not working or physically broken. Article reports restoration, redeployment and staff education the following year.	not reported	Equipment and procedure not reported.	installer	Advanced Listening Systems, original installer and later restorer	2015 installation project comprised 13 kiosks; number failing in 2022 not given.	chha-2023-yvr-counter-loops	Vancouver International Airport section, first two paragraphs	Nonprofit advocacy (Canadian Hard of Hearing Association, in its Get in the Hearing Loop series; the check described was made by Advanced Listening Systems, the company that installed and later restored the loops)	No kiosk-level results, failed-unit count or test procedure. No numerical verification after restoration; this is an advocacy account of installer work.	Nonprofit advocacy
healthwatch-cornwall-2015-hospital-hearing-loss-main	installation_or_area	Royal Cornwall Hospital, Treliske: Trelawney main reception	Hospital reception	United Kingdom (England)	not reported	2015	Listening quality; acoustic background noise; signs; staff awareness	Loop worked, with poor sound through the hearing aid attributed to the lapel microphone and background noise; staff lacked suitable training.	listening	Hearing-aid listening at a hospital visit; no meter readings reported.	government	Healthwatch Cornwall; individual loop tester not identified	Two reception desks visited; number of loop listeners not specified.	healthwatch-cornwall-2015-hospital-hearing-loss	PDF pp. 1-2, Treliske loop-system bullet	Government (Healthwatch Cornwall CIC, the county's statutory health and social care watchdog; the work followed issues raised by one of its volunteers who has hearing loss and a meeting with the hospital trust's equality lead)	Report dated 9 April 2015; separate visit date not stated. Poor microphone pickup and acoustic background noise are not measurements of magnetic noise.	Government
healthwatch-cornwall-2015-hospital-hearing-loss-outpatients	installation_or_area	Royal Cornwall Hospital, Treliske: outpatients reception	Hospital reception	United Kingdom (England)	not reported	2015	Listening quality; acoustic background noise; signs; staff awareness	Similar poor microphone pickup and background-noise issue to main reception; loop sign hidden behind a box and staff lacked suitable training.	listening	Hearing-aid listening at a hospital visit; no meter readings reported.	government	Healthwatch Cornwall; individual loop tester not identified	Two reception desks visited; number of loop listeners not specified.	healthwatch-cornwall-2015-hospital-hearing-loss	PDF pp. 1-2, Treliske loop-system bullet	Government (Healthwatch Cornwall CIC, the county's statutory health and social care watchdog; the work followed issues raised by one of its volunteers who has hearing loss and a meeting with the hospital trust's equality lead)	Report dated 9 April 2015; separate visit date not stated. Poor microphone pickup and acoustic background noise are not measurements of magnetic noise.	Government
healthwatch-east-sussex-2024-gp-accessibility-surgeries	aggregate	Eastbourne GP surgery sites	GP reception and consultation rooms	United Kingdom (England)	2023	2024	Loop availability; signs; reported staff knowledge and check procedures	Four of seven sites had reception loops and signs. The narrative says three of those four reported staff knew how to check operation, but the table gives a different breakdown. Only one site had regular checking procedures. One site had a portable loop.	inspection/interview	Lay checklist visits from July to October 2023, joined by surgery staff or patient representatives; no listening or meter test reported.	government/volunteer	Healthwatch East Sussex staff and volunteers, teams of two or three	Seven sites of five GP practices.	healthwatch-east-sussex-2024-gp-accessibility	Printed pp. 3-4, Methodology and Key findings; p. 6, Reception Area table; p. 9, Reception and waiting area; p. 11, Communication	Government (Healthwatch East Sussex, the county's statutory health and social care watchdog; the audits were made by its staff and volunteers, with support from primary care commissioners at NHS Sussex)	Availability and procedure audit, not proof that any installed loop worked. Sites selected from practices that replied. No site-level loop results. The staff-knowledge table gives one positive, one partially met, two negative and three not applicable, conflicting with the narrative's three affirmative reports; the report does not reconcile them.	Government
healthwatch-hackney-2023-pharmacy-accessibility-pharmacies	aggregate	Hackney community pharmacies	Pharmacies	United Kingdom (England)	2022	2023	Loop availability; staff awareness	Summary reports nine pharmacies with loops among 48 visited; at two of the nine staff were unaware of the loop or did not know how to use it.	inspection/interview	Checklist visits in April 2022 by four authorised representatives; no listening or meter test reported.	government/volunteer	Healthwatch Hackney authorised representatives	48 pharmacies signed up to the NHS Community Pharmacist Consultation Service.	healthwatch-hackney-2023-pharmacy-accessibility	Methodology; Key findings - Accessibility within the premises - tools availability (PDF p. 11)	Government (Healthwatch Hackney, the borough's statutory health and social care watchdog; the visits were made by four of its authorised representatives, and the report thanks the City and Hackney Local Pharmaceutical Committee for its support)	Summary count transcribed without reconstructing individual equipment status from ambiguous availability/signage cells. This establishes reported availability and staff knowledge, not functioning loops.	Government
healthwatch-southampton-2017-hospital-loops-c6	location_check	University Hospital Southampton: C6 TYA reception	Hospital reception	United Kingdom (England)	2017	2017	Operation; staff awareness	Referred for investigation and staff training; loop type unknown. Sign difficult to see and attached to movable equipment.	inspection/interview	31 January 2017 visit with set staff questions and a questionnaire. The audit describes telecoil and loop-receiver listening overall, but gives no separate listening result for C6.	volunteer	Harry Dymond and Steve Beale, Healthwatch Southampton	Six visited locations including three clinical receptions with uncertain loop status; two volunteers with hearing loss.	healthwatch-southampton-2017-hospital-loops	PDF pp. 3-4, Method, Results and Recommendations	Government (Healthwatch Southampton, the city's statutory health and social care watchdog, funded through the local authority; the audit was done by two of its volunteers with hearing loss, as members of University Hospital Southampton's sensory loss group)	Equipment status and signs discussed, but no separate listening result or confirmed equipment type published for C6. Do not code a demonstrated technical failure.	Government
healthwatch-southampton-2017-hospital-loops-c7	location_check	University Hospital Southampton: C7 haematology day-unit reception	Hospital reception	United Kingdom (England)	2017	2017	Operation; staff awareness	Referred for investigation and staff training; loop type unknown. Clearer sign and leaving the loop on during reception hours recommended.	inspection/interview	31 January 2017 visit with set staff questions and a questionnaire. The audit describes telecoil and loop-receiver listening overall, but gives no separate listening result for C7.	volunteer	Harry Dymond and Steve Beale, Healthwatch Southampton	Six visited locations including three clinical receptions with uncertain loop status; two volunteers with hearing loss.	healthwatch-southampton-2017-hospital-loops	PDF pp. 3-4, Method, Results and Recommendations	Government (Healthwatch Southampton, the city's statutory health and social care watchdog, funded through the local authority; the audit was done by two of its volunteers with hearing loss, as members of University Hospital Southampton's sensory loss group)	Equipment status and signs discussed, but no separate listening result or confirmed equipment type published for C7. Do not code a demonstrated technical failure.	Government
healthwatch-southampton-2017-hospital-loops-chapel	installation_or_area	University Hospital Southampton: chapel	Hospital chapel	United Kingdom (England)	not reported	2017	Operation	Room loop working correctly; effective use depends on the lectern microphone.	listening	Separately tested by Harry Dymond; date and equipment for this separate check not specified. The general Method describes Dymond using the telecoil setting.	volunteer	Harry Dymond, Healthwatch Southampton	One chapel room loop, checked by one volunteer; six locations represented across this audit's dataset rows.	healthwatch-southampton-2017-hospital-loops	PDF pp. 3-4, Method, Results and Recommendations	Government (Healthwatch Southampton, the city's statutory health and social care watchdog, funded through the local authority; the audit was done by two of its volunteers with hearing loss, as members of University Hospital Southampton's sensory loss group)	Chapel was checked separately by Harry Dymond; that check date is not given. No meter readings.	Government
healthwatch-southampton-2017-hospital-loops-main	installation_or_area	University Hospital Southampton: main reception	Hospital reception	United Kingdom (England)	2017	2017	Operation; staff awareness	Working; staff familiar with it. Earlier incorrect installation had been redone. A small volume increase was recommended.	listening	Visit on 31 January 2017; hearing-aid telecoil and loop receiver with earbuds; staff questionnaire. Chapel checked separately by one volunteer.	volunteer	Harry Dymond and Steve Beale, Healthwatch Southampton	Six visited locations including three clinical receptions with uncertain loop status; two volunteers with hearing loss.	healthwatch-southampton-2017-hospital-loops	PDF pp. 3-4, Method, Results and Recommendations	Government (Healthwatch Southampton, the city's statutory health and social care watchdog, funded through the local authority; the audit was done by two of its volunteers with hearing loss, as members of University Hospital Southampton's sensory loss group)	No meter readings. Therapies was reported faulty but not visited; the shared outpatient reception is one loop, not two.	Government
healthwatch-southampton-2017-hospital-loops-outpatients	installation_or_area	University Hospital Southampton: shared cardiothoracic and oncology reception	Hospital reception	United Kingdom (England)	2017	2017	Operation; staff awareness	Working; volunteers had previously found it not working and shown staff how to use it. No further action recommended at this visit.	listening	Visit on 31 January 2017; hearing-aid telecoil and loop receiver with earbuds; staff questionnaire. Chapel checked separately by one volunteer.	volunteer	Harry Dymond and Steve Beale, Healthwatch Southampton	Six visited locations including three clinical receptions with uncertain loop status; two volunteers with hearing loss.	healthwatch-southampton-2017-hospital-loops	PDF pp. 3-4, Method, Results and Recommendations	Government (Healthwatch Southampton, the city's statutory health and social care watchdog, funded through the local authority; the audit was done by two of its volunteers with hearing loss, as members of University Hospital Southampton's sensory loss group)	No meter readings. Therapies was reported faulty but not visited; the shared outpatient reception is one loop, not two.	Government
healthwatch-southampton-2017-hospital-loops-wellcome	location_check	University Hospital Southampton: Wellcome Trust CRF reception	Hospital reception	United Kingdom (England)	2017	2017	Operation; staff awareness	Staff believed a loop was present but no unit could be found; an electrical point suggested a counter loop. Cable presence was not established.	inspection/interview	Visit and discussion with staff; no unit available for a listening test.	volunteer	Harry Dymond and Steve Beale, Healthwatch Southampton	Six visited locations including three clinical receptions with uncertain loop status; two volunteers with hearing loss.	healthwatch-southampton-2017-hospital-loops	PDF pp. 3-4, Method, Results and Recommendations	Government (Healthwatch Southampton, the city's statutory health and social care watchdog, funded through the local authority; the audit was done by two of its volunteers with hearing loss, as members of University Hospital Southampton's sensory loss group)	An uncertain installation, not a confirmed broken loop.	Government
healthwatch-southampton-2018-central-loops-all-shops	aggregate	Central Southampton shops	Retail counter	United Kingdom (England)	2017	2018	Loop availability; operation included in audit questions	39 of 295 locations (13%) had loops. The published total counts presence; no total of functioning loops is supplied.	not reported	Visits checked availability and operation and asked about power, training, signs and routine tests; receiver or meter not specified.	volunteer	Lets Loop Southampton trained volunteers	295 shops visited; 39 fitted with loops.	healthwatch-southampton-2018-central-loops	Printed pp. 6-7, Methodology and Results	Independent (Lets Loop Southampton and Healthwatch Southampton volunteer audit; separate audit funding is not specified; the report describes a £4,000 GoSouthampton contribution for businesses to obtain loops)	No field-strength measurements or equipment-level follow-up readings. Aggregate rows overlap the named examples; do not add their counts.	Independent
healthwatch-southampton-2018-central-loops-asda	installation_or_area	ASDA, central Southampton	Retail counter	United Kingdom (England)	2017	2018	Operation; signs	Loop present but not operating correctly.	not reported	Visits checked availability and operation and asked about power, training, signs and routine tests; receiver or meter not specified.	volunteer	Lets Loop Southampton trained volunteers	One installation; listener count not reported.	healthwatch-southampton-2018-central-loops	Printed p. 7, table footnote	Independent (Lets Loop Southampton and Healthwatch Southampton volunteer audit; separate audit funding is not specified; the report describes a £4,000 GoSouthampton contribution for businesses to obtain loops)	No field-strength measurements or equipment-level follow-up readings. Aggregate rows overlap the named examples; do not add their counts.	Independent
healthwatch-southampton-2018-central-loops-body-shop	installation_or_area	The Body Shop, central Southampton	Retail counter	United Kingdom (England)	2017	2018	Operation; signs	Loop not working at the visit; the report later says it was repaired.	not reported	Visits checked availability and operation and asked about power, training, signs and routine tests; receiver or meter not specified.	volunteer	Lets Loop Southampton trained volunteers	One installation; listener count not reported.	healthwatch-southampton-2018-central-loops	Printed p. 7, Results and Outcomes	Independent (Lets Loop Southampton and Healthwatch Southampton volunteer audit; separate audit funding is not specified; the report describes a £4,000 GoSouthampton contribution for businesses to obtain loops)	No field-strength measurements or equipment-level follow-up readings. Aggregate rows overlap the named examples; do not add their counts.	Independent
healthwatch-southampton-2018-central-loops-john-lewis	aggregate	John Lewis, Southampton: three affected loops	Retail counter	United Kingdom (England)	2017	2018	Operation; signs	March 2017 audit found problems with three loops and missing signs. Report says the loops were repaired and signs added.	not reported	Visits checked availability and operation and asked about power, training, signs and routine tests; receiver or meter not specified.	volunteer	Lets Loop Southampton trained volunteers	Three affected loops; total installed number not given.	healthwatch-southampton-2018-central-loops	Printed p. 8, John Lewis case study	Independent (Lets Loop Southampton and Healthwatch Southampton volunteer audit; separate audit funding is not specified; the report describes a £4,000 GoSouthampton contribution for businesses to obtain loops)	No field-strength measurements or equipment-level follow-up readings. Aggregate rows overlap the named examples; do not add their counts.	Independent
healthwatch-southampton-2018-central-loops-stadium	installation_or_area	St Mary's Stadium, Southampton: ticket office	Stadium ticket counter	United Kingdom (England)	not reported	2018	Reported ticket-office loop quality; loop provision	Existing ticket-office loop described as poor quality. Report later describes improvements and more than 20 loops installed at the stadium.	not reported	Stadium visit and discussion after contact arising from the March 2017 Saints Store audit; the stadium check's equipment and procedure are not described.	volunteer	Lets Loop Southampton trained volunteers	One installation; listener count not reported.	healthwatch-southampton-2018-central-loops	Printed p. 9, St Mary's Stadium case study	Independent (Lets Loop Southampton and Healthwatch Southampton volunteer audit; separate audit funding is not specified; the report describes a £4,000 GoSouthampton contribution for businesses to obtain loops)	Stadium visit followed contact arising from a March 2017 shop audit; its own date is not given. No test equipment, numeric readings or follow-up checks published.	Independent
karg-2005-quality-controlled-loops-casino-theater	installation_or_area	Casino Theater, Winterthur	Theatre	Switzerland	not reported	2005	Frequency response	Karg describes the theatre loop response as within +/-3 dB from 100 Hz to 5000 Hz.	measurement reported	Presentation text describes the frequency-response graph on slide 11; underlying readings and measurement equipment not included.	not reported	Measurement operator not named; result described by Siegfried Karg	One installation; listener count not reported.	karg-2005-quality-controlled-loops	PDF p. 2, commentary on slides 8 and 11	Nonprofit advocacy (Siegfried Karg, then vice president of the European Federation of Hard of Hearing People and president of Pro Audito Winterthur, a Swiss hearing-loss association; the text is hosted on EFHOH's website)	2002 is the renovation year, not an established test date. Talk published in 2005; slide graph and raw readings absent from the archived commentary. The speaker's separate 90% estimate is a guess and is excluded.	Nonprofit advocacy
listen-2026-st-mauritius-case-study-church	installation_or_area	St. Mauritius Church, Berg	Place of worship	Switzerland	not reported	2026	Field-strength uniformity; commissioning	Manufacturer Ampetronic \| Listen Technologies reports measurements and verification for uniform magnetic field strength across the listening area; no numerical results published.	measurement reported	Installation measurements and commissioning described without instrument, grid or test signal.	installer	muribaer sa, with project lead and Ampetronic engineering support	One installation; listener count not reported.	listen-2026-st-mauritius-case-study	PDF p. 2, RESULT	Manufacturer (Ampetronic \| Listen Technologies, which made both the loop driver and the Auracast transmitter described)	Manufacturer account of its own equipment; no field map, frequency-response or noise figures, independent check or listener sample. Document version is dated 2026; actual test date is not given.	Manufacturer
london-assembly-2016-sensory-travel-routemaster	installation_or_area	New Routemaster bus on London Assembly site visit	Bus	United Kingdom (England)	2016	2016	Audible coverage; interference	Unpleasant buzz especially behind the driver's cab near an electrical cabinet; loop audible in priority seats nearest the middle door but not in those across the aisle.	listening	25 February 2016 journey with two hearing-aid users, shadowed by the committee chair.	government/listener	London Assembly Transport Committee chair and two hearing-aid users	One bus journey; two hearing-aid users.	london-assembly-2016-sensory-travel	Printed pp. 6-7, 20 and Appendix B p. 27	Government (London Assembly, the elected body that scrutinises the Mayor of London and Transport for London)	Vehicle number and route not identified. No meter readings; not a finding about all Routemaster buses.	Government
magann-faivre-2016-lecture-hall	installation_or_area	University lecture hall: 7 x 3 m test loop in a 120-seat room	Lecture hall	not reported	not reported	2016	Field strength; frequency response; electrical noise; speech recognition	Manufacturer-funded study reports meter checks without numerical loop readings. Hearing-aid users' HINT word-correct scores rose from 14% to 88% at -3 dB SNR and from 52% to 89% at +3 dB SNR with the loop on.	meter and listening	Field-strength meter with vertical telecoil; loop-on/off HINT testing. Room noise of 43 dBA is acoustic, not magnetic noise.	researcher/installer	Magann Faivre and colleagues; Steve Thunder assisted installation and technical support	26 bilateral hearing-aid users and 45 normal-hearing listeners; one lecture hall.	magann-faivre-2016	Study Methods: Testing Site and Hearing loop calibration; Discussion; Acknowledgements	Manufacturer (the authors state the research was funded by GN ReSound, a hearing aid maker, and Listen Technologies, an assistive listening and loop maker, together with the David & Carol Myers Foundation, the family foundation of loop advocate David Myers; study run at Northern Illinois University; co-author Juliëtte Sterkens is a hearing loop advocate whose outreach that foundation funds)	Actual test dates and explicit hall location not stated. Portions presented in October 2013; 2016 is publication year. Temporary 21-square-metre test loop does not establish whole-hall coverage. Speech results depend on listeners and fittings as well as installation.	Manufacturer
ridc-2022-orr-help-points-help-points	aggregate	Railway station Help Points in Great Britain	Railway station help points	United Kingdom (Great Britain)	2020; 2021	2022	Auditor assessment of whether a working loop was present	81.8% agreed and 18.2% disagreed that there was a working hearing loop.	not reported	Mystery-shop journeys and questionnaire; how loop operation was judged is not stated.	consumer auditor	RiDC consumer panel for the Office of Rail and Road	22 loop-question answers within 147 station audits by 63 auditors, including four expert reviewers.	ridc-2022-orr-help-points	Executive summary, Methodology and Context; Appendix 2 Table L, printed p. 77; Appendix 3, printed p. 79	Government (commissioned by the Office of Rail and Road, Great Britain's rail regulator, from the Research Institute for Disabled Consumers, which ran the audits with its panel of disabled consumers; the report states that it is independent)	Overall fieldwork began February 2020 and resumed September 2021; individual loop-check dates not separated. No meter or telecoil procedure stated. These 22 answers are not a failure-rate estimate for all 147 stations.	Government
rnid-2009-loop-checks-reports	aggregate	UK businesses in RNID campaign reports	Post offices; supermarkets; banks; shops; theatres	United Kingdom	2009	2009	Operation; availability; staff training; switched-on status	Nearly half of 500 reports described a loop not working properly; nearly one in four described no loop. Other complaints included lack of training and loops switched off.	not reported	Equipment and procedure not reported.	volunteer	RNID campaigning volunteers, reported by Disability News Service	500 reports covering 210 separate businesses since the start of 2009.	rnid-2009-loop-checks	Article opening three paragraphs	Nonprofit advocacy (reports gathered by campaign volunteers of the UK charity RNID and released for its Deaf Awareness Week campaign; reported by Disability News Service; labelled advocacy rather than an independent test because the reports were gathered for a campaign, with no test protocol described in the news report)	Reports are not unique installations. Campaign sampling and test method not described; do not infer a meter or listening method or a population failure rate.	Nonprofit advocacy
seidler-2012-daga-room	installation_or_area	Unnamed reverberant room, seats 260 and 464	Assembly room	not reported	not reported	2012	Speech Transmission Index (STI-PA)	Loop condition exceeds 0.75 at both seats, the figure's excellent-intelligibility category; other conditions plotted below it.	measurement reported	STI comparison at two seats with unaided listening, hearing aids, sound system plus hearing aids and loop; instrument unspecified.	researcher	Measurements reported by Hannes Seidler	Two seats in one room; not a reported listener sample.	seidler-2012-daga	Printed p. 97, Nutzen induktiver Hoeranlagen and Figure 1	Independent (TU Dresden, ear, nose and throat clinic of the Carl Gustav Carus university hospital); funding not stated	Country, venue name and measurement dates not supplied. Figure cites earlier 2009 work. Values not digitised from bars; no inferred precise scores. Not a field-strength or frequency-response test.	Independent

Codebook

result_id: Unique source-based key and installation, area or aggregate suffix. Parliament suffixes match Appendix A references.
row_scope: installation_or_area, location_check for uncertain equipment status, or aggregate when only grouped evidence is available.
site: Named installation/location or the source's group description. Unnamed rooms stay unnamed.
site_type: Venue setting, such as hospital reception, bus or theatre.
country: Source-supported location, with UK nation where available. Author affiliations do not establish a test site's country.
year: Year of the check only, or not reported. 2020; 2021 denotes RiDC's two fieldwork periods, not two checks of each installation.
source_year: Library publication year; never silently substituted for the check year.
checked: Quantities or features actually measured or examined. Availability, signs and staff knowledge are distinguished from operation.
result: Source-attributed outcome, including numerical values, faults and reported repairs. A repair account does not imply a measured retest.
method: meter, listening, meter and listening, inspection/interview, measurement reported, or not reported. The fifth value means measurements are described but equipment/procedure details are insufficient to classify further.
method_detail: Equipment, procedure and exact dates where stated. No meter or listening method is inferred merely from the word check.
checker_type: Actual checker role where known; combined roles use /. It is separate from funding and from the organisation publishing the account.
checker: Named checker or team; where only the reporting author is known, the cell says so.
sample: Area, venue, report, measurement-point or participant denominator with its unit preserved. These units are not interchangeable.
source_id: Library source identifiers supporting the row, separated by semicolons. Feature-specific and supporting-source columns retain their more precise roles.
source_locator: Original page, section, table or model entry supporting the row; source names identify locations when several originals are used.
funding_detail: Funding and producer context retained from the earlier compilation; the funding column carries the current source-record labels.
limitations: Row-specific interpretation limits and source-record reading limits. Missing information is not reported, never an inferred zero.
funding: Source-record funding labels. With multiple primary sources, each label is followed by its source id in brackets. Funding detail remains in funding_detail where supplied by the earlier compilation.

Compilation and interpretation

loop-tests.csv was compiled on 2026-10-13 from 17 existing library records and their archived originals. It contains 60 rows: 48 individual installations or assessed areas, three checked locations where equipment status was uncertain, and nine explicitly labelled aggregate findings.

The normal unit is one installation or assessed area, combining its checks in one row. Parliament House has 31 area rows keyed to the audit's A1-A31 references; these are not asserted to be 31 electrically separate systems. Where a source supplies only grouped findings, an aggregate row preserves that evidence without inventing individual installations. Filter row_scope before analysing individual results. The Scottish total includes its three named rows, and Southampton's overall shop audit includes its named shop examples. Neither totals nor failure percentages should be pooled across these overlapping rows or across unlike methods. (Ciolek and Covington 2008; Association of Leading Visitor… 2013; Lets Loop Southampton and Healthwatch… 2018; Disability News Service 2009; CHHA National 2023)

The file is UTF-8, comma-delimited, with a header, quoted fields and LF line endings. Import as text to preserve qualifiers and multiple years. not reported denotes missing information, never zero. There are no formulas, converted units or graph-digitised point estimates. Rows sort by source id and result id, with numeric area suffixes in numerical order.

Parliament's coverage categories are the audit authors' classifications after amplifier adjustment, not complete tests of every standard parameter. The Cabinet Room's highest Table 1 grade is retained with its partial-test qualification. Hospital listening quality and bus interference observations are not substituted for field-strength measurements. Hackney and Eastbourne rows describe availability and staff procedures, without proving working audio. Eastbourne's staff-knowledge narrative conflicts with its table; the row preserves that uncertainty. The Southampton therapies loop was not visited and is excluded from the check rows. C6 and C7 have no separately reported listening result, and the chapel's check was separate from the dated main visit. (Ciolek and Covington 2008; Healthwatch Cornwall 2015; London Assembly Transport Committee 2016; Healthwatch Hackney 2023; Healthwatch East Sussex 2024; Dymond HF 2017)

The q26 research report lists coverage decisions, archive provenance, uncertainties and existing-record concerns. Updating this table requires re-reading the original, retaining the row's unit and method, and distinguishing an actual retest from a later publication or repair claim.

Change log

2026-10-13: Migrated 60 rows with codebook and source provenance into the data section.
2026-10-14: Declared the existing row key for stable links from questions; row values are unchanged.
2026-10-14: Corrected the Alfakir row’s location limit and added the Discussion and session-count locators after an archive audit.

Cite this table

Equal Access Audio. “Measured and checked hearing loops” Assistive Listening Knowledge Base. Version 1.2. Compiled 13 October 2026; updated 14 October 2026. https://assistivelisteningknowledgebase.org/data/loop-tests/ (accessed the date you read it).