[Elecraft] K2 Low Receive Sensitivity on High Power

Jonathan Taylor, K1RFD k1rfd at k1rfd.com
Mon Nov 23 22:43:46 EST 2009


K2/100 # 2462, with all options except DSP.

I've noticed just recently that when turning the Power above 10 W (and 
hearing the relays click), the receiver gain drops 20 or 30 dB.  The 
receiver returns to normal sensitivity when the Power knob is returned 
to a lower setting.

This must have starting happening only recently.  The rig is working 
fine on transmit at all power levels.

Looking at the schematic, I suspect the the first place to look will be 
the T-R switch in the KPA100, but I thought I would post to the list to 
see if this is a well-known problem.

Thanks!

Jonathan K1RFD



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