you won't know if the antenna's tuned if the tw-1 is in line after it, how
will you know if the tuner is tuned or not unless the tw-1 is between it and
the amp? The antenna has to hook to the tuner, then tw1, than amp, than
radio other wise there's no point in having the tw-1
----- Original Message -----
From: "Steve Dresser" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, October 20, 2009 9:33 PM
Subject: Re: Amplifiers and SWR.
> No it doesn't. The tuner should be the last thing in line (except for the
> TW1) before the antenna. Otherwise, the tuner won't be matching the
> antenna
> to anything useful when the amp is turned on. That's why you don't run an
> internal auto tuner when you're running an amplifier.
>
> Steve
>
> ----- Original Message -----
> From: "John Miller" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, October 20, 2009 17:32
> Subject: Re: Amplifiers and SWR.
>
>
>> if you have no antenna tuner, you're right, but if you have an external
>> tuner, it needs to be between the tuner and the amp so you can tune the
>> antenna though again, once tuned, sometimes it's fun to put it on the
>> output
>> of the tuner just to see what's coming out of it, but I'd leave it
>> between
>> the amp and tuner, which is where mine is.
>> ----- Original Message -----
>> From: "Steve Dresser" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Tuesday, October 20, 2009 5:13 PM
>> Subject: Re: Amplifiers and SWR.
>>
>>
>>> Rick,
>>>
>>> Actually, your TW-1 should go between the output of the amplifier and
>>> the
>>> antenna so you can see how much power your amp is putting out. When
>>> your
>>> amp isn't being used, the meter will measure the output power of the
>>> radio.
>>>
>>> Steve
>>>
>>> ----- Original Message -----
>>> From: "Rick" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Tuesday, October 20, 2009 12:46
>>> 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.
>>>>
>>
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