[Elecraft] K3/100 RF Feedback/Spurious oscillations ?

[Andrew Faber]

Toby,
  Yes, that is a sensible way to do it.  Does anyone have a simple circuit 
for this in an SO2R setup, where you would need to ground the RX input to 
the transmitting radio without grounding the receiving antenna that might 
also be connected to the second radio?
  73, andy, ae6y
----- Original Message ----- 
From: <dj7mgq at muenchen-mail.de>
To: <elecraft at mailman.qth.net>
Sent: Thursday, January 31, 2008 8:39 AM
Subject: Re: [Elecraft] K3/100 RF Feedback/Spurious oscillations ?


>> about it or not, but would be interested in solving this problem, as it
>> impacted my ability to use our beverages on RX.
>
> At the Bavarian Contest Club's contest QTH we use a simple relay to 
> disconnect the rigs reception antennas whenever the rig goes to a TX 
> state. A simple relay, a few simple parts and the PTT/KEY signal do  the 
> trick.
>
> Many rigs do not switch the RX antenna input when transmitting, so  this 
> always requires a bit of care - especially at high power levels.
>
> vy 73 de toby
>
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