[Elecraft] K3 deaf on 10 meters

[Don Wilhelm]

Do you have the correct antenna selected (this is a per band setting)?  
Do you have the RX ant selected?
There is a little feedthrough under those conditions, but only strong 
signals will be heard.

73,
Don W3FPR

On 11/15/2011 2:06 PM, W9HAK wrote:
> Hello list,
>
> My K3, serial number 3953, hears only the strongest signals on 10
> meters. I observe that the noise floor displayed on the P3 is around
> -140 db. Switching the antenna in and out does not change this reading.
> On the lower bands I see a noise floor change. It's like the antenna
> isn't being attached. The transmitter works on 10 meters with an 1:1
> swr. The pre amp moves the noise floor as I expected.
>
> Any suggestions?
>
> W9HAK
> Smith Bradford
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