[Elecraft] KPA1500 RFI on 10 Meters

[Jim Brown]

On 12/17/2019 11:07 AM, K9MA wrote:
> 
> In my case, the noise is present any time the KPA1500 is turn on. Its 
> effect depends only on the direction my beam is pointed, as both my 
> noise level and the amplifier noise vary with direction. In the worst 
> case, I'm seeing about a 5 dB increase from my high urban noise floor. I 
> think the effect would be far more dramatic in a quiet location. (My 
> antenna is about 100 feet from the amplifier, which is in the basement.)

Scott,

Your result suggests a problem with bonding in your station. Study this 
tutorial, http://k9yc.com/GroundingAndAudio.pdf  and/or N0AX's recent 
ARRL book on the topic, to which I contributed extensively.

73, Jim K9YC