John,
Have you checked the antenna feedline and connectors.
Those can often create a "big attenuator".
Try the antenna on another receiver if possible.
73,
Don W3FPR
On 1/21/2020 11:43 AM, John Unger wrote:
A few days ago one of my K3's appeared to have suddenly gone almost deaf.
Here are some of the symptoms and observations:
- Rig's S meter shows very low or no background noise (strong stations can
still be heard weakly).
- P3 shows <S0 signal strength.
- I can hear strongest stations, they just make it to ~S1.
- Overall effect appears to be similar to having big attenuator in line.
- Problem is antenna independent.
- Rig transmits fine, low SWR, etc.
- Both main and sub receivers have the symptoms.
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