I have and aging aunt-in-law who used an old fashioned hearing aid with
separate ear-piece and amplifier.
This works very well for her apart from when she uses the phone. To do so,
she has to remove the amplifier from somewhere under her cardigans and hold
it over the earpiece of the phone, a process that takes a little time and
often results in callers hanging up before she can initiate a conversation.
Life would be simpler if her phone earpiece could be linked up to a loop
aerial that covered a wider area so that she wouldn't have to fiddle with
her hearing aid. Do any phones exist with the appropriate socketry to allow
them to be connected to a loop-aerial amplifier? She already has a phone
with a built in inductive coupler but that's not a lot of use with the old
chest mounted amplifier that she uses.
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