[Elecraft] Strange receive problem

[Joseph Reed]

Thanks Vic,
   
  But its not the antenna or coax.  I had already tested it, besides being a multiband vertical it shouldn't happen on only one band.  According to the 259B my SWR is 1.2:1, and brand new coax from the antenna to the switch.
   
  Thanks for taking time to give me your advice,
   
  Regards,
  Joe N9JR

Vic K2VCO <vic at rakefet.com> wrote:
  Joseph Reed wrote:

> I have an issue on 30m receive only. When I transmit on 30m I get
> full power, and it receives normal, but after a while it loses most
> of its sensitivity. Transmit again and it will hear the other side
> of the earth. I have noticed that once it goes partially deaf I can
> get a High Curr indication on the first dash I send, but after that
> it puts out full power with no complaints and of course after every
> transmission it is that beautiful K2 receive.

Check the 30m feed line, connectors, etc. Also test it into a dummy 
load. Although you might have some difficulty determining receive 
sensitivity, you'll notice if you get the Hi Curr indication. Maybe the 
problem isn't actually in the K2! Poor contact in coax connectors often 
looks like this.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco