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Tue, 20 Oct 2009 12:46:37 -0400 |
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Hi John.
The TW-1 is between the amp and the tuner.
The radio is A Kenwood TS-430S, and the amp is A Heathkit SB-220.
I have the original manual to the amp, and according to the notes the guy
that built it, the amp was put on the air on May 5th 1976.
I have a Kenwood AT-250 auto tuner I can put between the radio and amp if
you think that would help.\Thanks again for your help, and 7 3.
----- Original Message -----
From: "John Miller" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, October 20, 2009 12:32 PM
Subject: Re: Amplifiers and SWR.
> The amp should have no effect on swr, where is your TW1 in line? I'm
> wondering if something's off inside the amp and maybe the input impedance
> is
> off, if the radio has an auto tuner, you can use that for a quick fix for
> that, but will want to fix it right eventually. I've heard of that
> happening
> with older amps.
> ----- Original Message -----
> From: "Rick" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, October 20, 2009 12:24 PM
> 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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