[Elecraft] Weird Problem with rcvr sensitivity - more

[Geoffrey Mackenzie-Kennedy]

Tom,

Quite some time ago I had a problem with my K2/100's receiver, its 
sensitivity would sometimes get poorer on 40m after transmitting. I 
eventually found in my case that relay K1A's contacts had become "dirty", 
which  can (but not often) happen with that type of relay. When you next 
have the problem, rather than transmitting another string of dits try 
switching to the next higher or lower band and back again without 
transmitting. If the receiver's sensitivity then returns to normal at once 
or after a few attempts I would suspect a relay that is in the signal path.

Please let me know how you make out.

73,
Geoff
GM4ESD

PS  Please bear with me if I am slow to answer.


Tom KJ3D wrote:

> but it's not a bad connector.  I have also confirmed that the KAT100 is 
> not
> the problem, and it occurs on SSB as well as CW.  It is also not confined 
> to
>>75 watts, seems to happen just about anywhere above 10 watts.
>
> I'm just sure I read about someone else having this problem, I sure hope 
> he
> reads this.
>
> Tom. kj3d