[Elecraft] K3: Main RX gone deaf

[Don Wilhelm]

Udo,

If you check the block diagram of the K3 you should see the area where 
the problem is located (page 76).

Does the main have the same response as the subRX if you use the RX ANT IN?
If so, there is a problem with either the T/R switch or the Low Pass 
filter area.

If the main RX response is still not the same as the subRX when using 
the RX ANT IN, then the problem is in the main receiver itself.

73,
Don W3FPR



On 4/30/2016 5:57 PM, Udo Langenohl - DK5YA wrote:
> Gents,
>
> I had another test session today with my K3 and here's what I've done 
> and what happened:
>
> 1. I've checked all the test points recommended by Elecraft. No issue 
> found, all stages are working, there's noise increasing on each test 
> point at the Main RX.
>
> 2. Fired up my signal generator again and started on the Main RX with 
> a signal on the following frequencies and with these results:
>