I saw a forum discussion on QRZ where someone was having issues on 20 meters 
and a Ameritron Tech told him the spread the coils on the board, which 
seemed to help somewhat.  You probably need to get the Ameritron serviced b 
y a good knowledgeable guy like W8GI or there's got to be somebody around in 
Eastern Canada.  If you have had that problem on 20 meters into a good dummy 
load, then you have some amp issues.
----- Original Message ----- 
From: "Michael Ryan" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, April 07, 2014 7:44 AM
Subject: re failed tubes


> Hi all:
>
> I've already tested my station through a dummy load and the reduced 20M 
> output still occurred.
> I have also tested the antenna direct when I was having that 75M SWR spike 
> and the numbers were:
> 30/1 on 75M, 2.5/1 on 40M and 5/1 on 20M. I didn't try 17/15/12/10 because 
> don't operate very much on those bands.
> My own tuner failed to keep that spike down on 75m with 200W but had no 
> problems handling the rest of the tuning on 40 and 20M along with the 600W 
> CW output from my amp, except for 20M due to the low output.
> When my tuner returned from my friend's bench, after he did some work on 
> it, it handled my antenna perfectly on 75M but when I tried my amp, with 
> 500W CW, I heard a hissing in the back of the amp, not in the tuner or 
> rig.
> I re_installed his tuner and everything was perfect. His roller inductor 
> and capacitor is much heavier than mine and I can't help but wonder if 
> this is why Zero Five recommends the Palstar or some other heavier tuner.
> They offer a remote tuner version but its only rated at 200W. I tune mine 
> in the shack with about 100 feet of coax. I've had a very good 
> relationship with Tom at Zero Five but if these antennas are truly a 
> danger to equipment, then I should look for the refund and maybe look into 
> the Hustler 6BTV.
> I'll call Tom and Ameritron today and get this sorted it out.
> I'm very perplexed.
>
> 73:
> Mike VO1AX