[Elecraft] Heil Pro 7 headset with KX3 - RF feedback?

[James Bennett]

It seems to depend on the headset being used. I have an IC-705 (my K-line is packed in storage currently) and have tried Bluetooth with it. Using several different BT headsets (Bose QC, Apple Air Pods, Avantree) it was an utter failure on CW. However, I recently got an Srhythm NC35 noise cancelling headset from Amazon. It works wonderfully on CW - zero latency to be detected. I operated several times in the CWops Wednesday night get togethers (high-speed CW) and THIS bluetooth headset was perfect. That being said, I am unaware what version of BT the ‘705 is using. But, one shouldn’t completely abandon the technology - it can work in certain circumstances.

Jim / K7TXA

> On Jun 18, 2021, at 1:23 PM, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
> On 6/18/2021 12:04 PM, Rick NK7I wrote:
>> Has anyone used rx audio via Bluetooth into their hearing aids? Any issues?
> 
> The important (and killer) issue with Bluetooth is latency when you try to run CW. The delay makes it impossible to send with any form of bug, paddle, or straight key. The delay is also be problematic if you try to monitor yourself on SSB. When I was doing live sound for large crowds outdoors, I heard very professional announcers slow down and stop talking when they heard themselves coming back through the system 100 msec late.
> 
> There are (at least) two forms of BlueTooth. The one for shorter distances (lower power) has less latency than the other. Both would be a killer for CW, but the shorter one might not be too bad for monitoring our own transmission on SSB.
> 
> 73, Jim K9YC
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