Hi Rick,
I would really recommend that you pick up a dummy load that can handle the
power from the amp. Tuning up on the air only pisses people off and just
makes QRM for others. It can also be helpful in trying to sort out
station problems like swr, rfi, and other stuff.
I kind of thought it was you that had fluctuating swr on the vertical a few
weeks ago. If you took some things out of line and then put them back in
line and all seems good now, maybe you can isolate the problem to the things
you were messing with. Maybe a loose connection on something that got
tightened properly the second time around, or maybe a bad connector
or jumper that just happens to be in a good spot right now.
Good luck, hope to work you sometime, Steve KW3A
----- Original Message -----
From: "Rick" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, October 20, 2009 3:21 PM
Subject: Re: Amplifiers and SWR.
> Hi steve.
> Unfortunately I don't have a dummy load yet, so I don't use the amp much.
> Yes the same thing happens on all bands.
> Correct again on the antenna problem. smiles
> I haven't done anything to the antenna yet, but I'm beginning to think
> it's
> a jumper coax problem.
> I took the manual tuner and amp out of line, and hooked the automatic
> tuner
> back up.
> I ran the auto tuner a week or two, and no problem
> Yesterday I removed the auto tuner, and hooked the amp and manual tuner
> back
> up.
> So far, so good.
> I plan to change all the jumper coaxes as soon as I get new ones.
> ----- Original Message -----
> From: "Steve Forst" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, October 20, 2009 1:00 PM
> Subject: Re: Amplifiers and SWR.
>
>
>> Rick,
>>
>> This isn't normal. I often see the opposite: Maybe a 1.4 swr on a band
>> at
>> low power and see it drop a few points at high power. Does it happen on
>> all bands? Same result into a dummy load? Did it just start doing
>> this?
>>
>> I may have you confused with someone else, but didn't you have a problem
>> with intermittent high swr on a vertical antenna not too long ago? If it
>> was you, what was the final result and is it the same antenna you have
>> problems with now?
>>
>> Easy thing to do right off is to check all connections in the shack:
>> rig,
>> meter, tuner, amp, switches, etc.
>> 73, Steve KW3A
>> ----- 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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