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Old 08-28-2021, 02:32 PM
Norman CYYJ Norman CYYJ is offline
Join Date: Feb 2005
Location: Victoria B.C.
Posts: 1,418

I find it absolutely amazing the technology that they can package into such a small space and including rechargeable battery.
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Old 08-29-2021, 07:10 AM
Radioflyer Radioflyer is offline
Join Date: Nov 2009
Location: Boston
Posts: 184
Default you say, the telecoil is required. OK, but please confirm/explain, where does the electromagnetic transmitted signal come from? Is it emf energy from the headphone speakers? If so, I wonder how effectiveness varies with different headphones, anr and non anr.
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Old 08-29-2021, 07:38 AM
Piper J3's Avatar
Piper J3 Piper J3 is online now
Join Date: Nov 2014
Location: Hinckley, Ohio
Posts: 2,523

Telecoil was originally developed for hearing aids to improve sound quality when using land-line telephones; hence, the name Telecoil. Now with Bluetooth cell phones, the audio is “streamed” directly to the hearing aid and Telecoil is not required.

Telecoil is essentially a half-winding of a transformer with other half-winding being the voice coil in the headset speaker. EMF inductance transfers signal from one winding to the other.

I have only used Telecoil hearing aids with ANR headset. I would imagine that non-ANR would work well also, but you would not have the double effect of noise reduction. The ANR headset cancels background noise, and then when using Telecoil, the hearing aids microphone is muted, so the hearing aid essentially becomes an ear plug that blocks sound from entering the ear canal.

Flying is largely visual, but to truly enjoy, the ability to clearly communicate with passengers, hear radio, and not be droned-out by engine noise enhances the experience.
Jim Stricker - EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 717

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father - CFI) - USAAF 1st Lt. Captain B-17H

Last edited by Piper J3 : 08-29-2021 at 07:42 AM.
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Old 08-29-2021, 09:26 AM
Radioflyer Radioflyer is offline
Join Date: Nov 2009
Location: Boston
Posts: 184

Piperj3, right, that's what I thought. Thanks. A friend was discussing hearing aids and mentioned that his audiologist did not think hearing aids would work with headsets...that he would have to remove the AIDS while flying. I guess the audiologist did not factor in the old telecoil possibility.
This topic should be in the general section and might even be a good article in Sport Aviation or Kitplanes.
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