Gery,

Is the power supply a linear or a switching supply?  Switching supplies 
sometimes emit "birdies" on the higher frequencies, but linear supplies 
don't have that problem.  What kind of noise is it?  Is it all over the 
band, or in certain spots?  Does the noise move up and down the band.  Noise 
from switching supplies usually doesn't stay in one spot.

Steve

----- Original Message ----- 
From: "Gery Gaubert" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, January 04, 2010 11:46
Subject: noise on 20 meters


>        I have an ameritron power supply and an icom 751A transceiver.  I 
> h=
> ave about 50 feet of rg8 going from the butternut 6v to the antenna tuner. 
> =
> My swr is about 1.6.  reflective power is less than 5 watts and power is 
> a=
> ny where from 98 to right at 100 watts.
>