[Elecraft] K3 transmit audio cuts out

[Vic, K2VCO]

I had a similar problem with a battery-operated CO detector. I covered
it with aluminum foil, and punched through the foil everywhere there was
an opening in the plastic case of the CO detector. No further issues.

On 7/27/12 10:44 PM, Richard Fjeld wrote:
>> I am looking at this as an rfi issue first and foremost. I am going
>> to clean up a little bit inside the shack. That particular K3 has
>> been suffering with unusual noise with my new SteppIR three element
>> that was put up less than a month ago.
>
> I have an 80 meter loop fed with homebrew ladder-line to an Ameritron
> ATR-30 tuner with an internal 1:1 balun.  No (known) RFI on all
> bands, 80-10.
>
> But, I have a commercial tri-band beam fed with coax. (It has a balun
> at the feed-point).  When I am operating 20 meter CW, it sets off the
> battery operated smoke detector in the hallway to our bedroom.  Go
> figure!  Not good when operating at night with my wife sleeping.  She
> panicked.  That alarm is extremely piercing.
>
> I put a MFJ-915 RF Isolator in line with the coax. So far, so good,
> but need more time on 20. It may be frequency specific, also.  If it
> continues to be a problem, I will relocate the smoke detector to the
> garbage can.
>
> Richard Fjeld, N0CE

-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/