[Elecraft] KX1 TROUBLE ?

[Don Wilhelm]

Puck,

If the AGC is working on that KX1, it should not become less sensitive 
with full rotation of the RF Gain, so I suspect something is not working 
in the AGC circuit.   If the AGC is not functioning, strong signals can 
overload the receiver.

Motorboating can be because of the batteries - normally happens only 
when the batteries are near discharge.  Try an external supply or brand 
name new alkaline batteries and see if it goes away.

Don W3FPR

On 4/15/2018 12:08 PM, hmmjr wrote:
> I recently bought a used KX1 with 4 bands and the ATU.  I put in six AA alkaline batteries and made contacts on each of the 4 bands with about 1.5 watt output on each band.   All seemed to work perfectly. Yesterday I noticed I could no longer run the RF gain wide open.  Doing so greatly reduced the sensitivity. I had to back off on the gain at least one dot to regain normal sensitivity.  Also I noticed a motor boating sound in the receiver which had not been there before. Touching the cabinet or moving the rig into different positions changes the the intensity of this sound.  I thought perhaps battery voltage was too low so I put in a new set. There was no change.  Does anyone have an idea orf what the problem may be?73, Puck W4PM