Thanks, I'll try that.
----- Original Message ----- 
From: "John Miller" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, October 20, 2009 12:52 PM
Subject: Re: Amplifiers and SWR.


> Well, normally it's not good to run 2 tuners, but what you might want to 
> do
> is get the swr perfect on the antenna or as close as you can, put the TW-1
> in between the radio and amp, making sure everything's tuned up and ready 
> to
> go first, then see if you see strange SWR there when the amp's on, I have 
> a
> feeling one of those, I think there are capacitors that go bad and do that
> sometimes but I'd have to look it up on line, if the radio's seeing 1:1 or
> close to it in to the amp at all times, it's something else, possibly as
> simple as tuning the amp wrong. I'd check the input of that amp first and
> see if something's going on there.
> ----- Original Message ----- 
> From: "Rick" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, October 20, 2009 12:46 PM
> Subject: Re: Amplifiers and SWR.
>
>
>> 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.