exactly.
----- Original Message -----
From: "Ed Malmgren" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, October 20, 2009 10:51 PM
Subject: Re: Amplifiers and SWR.
> The reason the T W 1 is right after the amp is that it tells what the amp
> is
> seeing as a resonance load by tuning the tuner.
> Ed K7UC
> ----- Original Message -----
> From: "John Miller" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, October 20, 2009 7:40 PM
> Subject: Re: Amplifiers and SWR.
>
>
>> 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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