[Elecraft] [K3] Relay click - SOLVED.....

[David Olean]

Hello Ray

I built an RF limiter to put in my 2nd receiver line. It consists of two 
toroids and a pair of 1N914 or other fast diodes. Basically you step up 
the impedance to a pair of diodes and then step it back down to 50 
ohms.  Mine limits nicely at about 0 dBm or so. You can buy similar 
stuff at DXE I think.

Dave K1WHS

On 11/7/2019 2:30 PM, Ray Albers wrote:
> ….thanks to comments and suggestions from K9ZTV and W2CS.
>
> My K3 has the Sub Receiver installed, and I have been playing around with
> diversity reception, using a random wire connected to the sub-receiver
> antenna input BNC connector.  Apparently the carrier operated relay that
> protects the receiver from overload is being triggered by lots of RF coming
> into that random wire. When I disconnect the receive antenna, no more
> clicking. Now that I know what it is, I'll just ignore it. Or maybe someday
> I'll rig a manual T-R switch arrangement to disconnect the sub receiver
> antenna except when actually using it.
>
> Thanks, gents!
>
> 73
> Ray K2HYD
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