Bluetooth latency and CW reception

[Bob Nielsen-4]

Like many of us of a certain age, I have started wearing hearing aids
(actually I first tried one 20 years ago but since my hearing on one ear
was still pretty good at the time I gave up on it soon after).  Now I
have issues in both ears and am essentially deaf in one so I got aids
with CROS technology to feed sound from both sides to my better ear.

Because of the technology involved in this, I was unable to get
bluetooth capability in my hearing aid and have an adapter which
receives bluetooth and  I have been told that it sends it to the aids
with a very low power 10.6 MHz signal.  This works quite well but
ordinary headphones aren't very comfortable when wearing the hearing
aids and I would prefer to not have to remove them when operating.  I
have been thinking about getting a bluetooth transmitter to connect to
my K3S instead of using my headphones. However, I suspect that latency
may be an issue and there might be an unacceptable delay between the
keying input and the sidetone received by the hearing aids.  I N7XY'm
also concerned that RF (especially on 30 meters) might saturate the 10.6
MHz receiver inside the hearing aid.

Has anyone been able to use a bluetooth connection (such as bluetooth
headphones) successfully on CW?

73, Bob N7XY

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[Bob N3MNT]

I tried a few BT transmitters.  No issue with interference, but the latency
you are concerned about made it impossible to send at any speed.  Works fine
on SSB, but for me was not usable for CW and since most of my time is spent
on CW I stopped using it.  I know there have been a few members who claim to
have found one that is better.  Hopefully one of them will come in with a
model and some data.




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[Phil Kane-2]

On 8/17/2018 10:40 PM, Bob Nielsen, N7XY wrote:

> Like many of us of a certain age, I have started wearing hearing aids

Welcome to the club.

> Has anyone been able to use a bluetooth connection (such as bluetooth
> headphones) successfully on CW?

My hearing aid devices (Phonax Audeo) use an around-the-neck pendant
adapter (Phonax ComPilot II) that does BT to and from my cell-phone but
couples to the hearing aid devices inductively.  It has a 3.5 mm  jack
that will feed external audio to the induction system as well.  Standard
3.5 mm M-M patch cord from the headphone lack on the radio or the
computer puts the audio sounds into my ears with no noticeable latency
problems, as tested with my K2.  They also make a BT adapter for
across-the-room TV sound use but I have never tried it because I have no
need for that.

Enjoy hearing again.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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[Bob Nielsen-4]

Thanks for that reply Phil.  Actually I also have Phonak hearing aids
and a ComPilot II.  I will give that a try after I get my new K3S
installed within the next few days.

I have only had the hearing aids for a few weeks but the improvement has
exceeded my expectations.

73, Bob N7XY


On 8/19/18 11:40 AM, Phil Kane wrote:

> On 8/17/2018 10:40 PM, Bob Nielsen, N7XY wrote:
>
>> Like many of us of a certain age, I have started wearing hearing aids
> Welcome to the club.
>
>> Has anyone been able to use a bluetooth connection (such as bluetooth
>> headphones) successfully on CW?
> My hearing aid devices (Phonax Audeo) use an around-the-neck pendant
> adapter (Phonax ComPilot II) that does BT to and from my cell-phone but
> couples to the hearing aid devices inductively.  It has a 3.5 mm  jack
> that will feed external audio to the induction system as well.  Standard
> 3.5 mm M-M patch cord from the headphone lack on the radio or the
> computer puts the audio sounds into my ears with no noticeable latency
> problems, as tested with my K2.  They also make a BT adapter for
> across-the-room TV sound use but I have never tried it because I have no
> need for that.
>
> Enjoy hearing again.
>
> 73 de K2ASP - Phil Kane
> Elecraft K2/100   s/n 5402
>
>  From a Clearing in the Silicon Forest
> Beaverton (Washington County) Oregon
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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[michaelstringfellow]

I am also hearing impaired, but like to use a headset with microphone. My
hearing aids just didn’t work with my favorite headset, but I discovered a
work-around. I used the K3 audio receive settings to boost the frequencies
required. For CW, I applied essentially a lot of gain to amplify my
preferred sidetone frequency (~800 Hz) and for SSB I applied gain to
frequencies required for speech recognition and attenuation to others ( a
technique I borrowed from MFJ’s audio speech enhancer). With these
adjustments, I can operate without hearing aids.

Mike



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