Rick,
I'll defer to those who have more experience running high power, and
especially to those who have used this particular amp, but for what it's
worth here's my two cents.
While you are dealing with an older amp that could have who knows what
going on with it due to age, previous misuse, or tweaking or modification
over the years, perhaps you should be positive the rest of the station is up
to snuff before sticking your grubby hands into the amp.
Going from memory, I think your original problem was fluctuating swr
especially when it was windy. This lead most of us who replied back then
to think there was something going on outside, either antenna or feed line.
Maybe you have separate issues going on here, or maybe just one thing that
is giving you all this grief.
Once again, if you had a dummy load and saw swr problems into the antenna,
but not into the dummy load, this could help you isolate the problem area.
Good luck, Steve KW3A
----- Original Message -----
From: "Rick" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, October 21, 2009 8:19 AM
Subject: Re: Amplifiers and SWR.
>I don't know how to adjust it.
> I wouldn't want to try if it means opening up the case, not with all that
> high voltage
> I'd be afraid of accidently touching a electrolitic capasitor.
> ----- Original Message -----
> From: "Steve Dresser" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, October 20, 2009 5:09 PM
> Subject: Re: Amplifiers and SWR.
>
>
>> Rick,
>>
>> You may have some sort of matching network on the input side of your
>> amplifier, and if it has changed, you should probably adjust it. I
>> wouldn't
>> try to correct this with the auto tuner in your radio.
>>
>> Steve
>>
>> ----- Original Message -----
>> From: "Rick" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Tuesday, October 20, 2009 12:24
>> Subject: Amplifiers and SWR.
>>
>>
>>> Hi list.
>>> Using my TW-1 and MFJ versa tuner, I set my SWR as low as I can get it.
>>> Say 1.01 to 1 on 20 meters. Then I tune the amp.
>>> After tuning the amp I check my SWR again, and it's up to say 2.4 to 1.
>>> Is this normal, and should I readjust the SWR again with the amp on?
>>> Thanks in advance, and 7 3.
>>>
>
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