The tuner or matching device should be the last thing in the feed line 
because the tuner output won't be 50 ohms if the antenna isn't resinant. 
Most meters are 50 ohm  devices and  if the input is not it can't read 
forward and reflected power  properly.
So if the SWR is 6 to 1 then you have some combination of inductive and 
capacitive reactance load/antenna of 300 ohms compared to a source of 50 
ohms and a tuner will match the load so the transmitter will deliver 
whatever power it can.

----- Original Message ----- 
From: "Gerry Leary" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, September 29, 2011 3:32 AM
Subject: Re: Strange Power Readings With LDG TW1


> If you use an amp, you need an external tuner after the amplifier.  Also 
> now
> that I think about it, you shouldn't measure the SWR after the tuner.  At
> least that is the way I am thinking at this early time of the day.
> ----- Original Message ----- 
> From: "Tom Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, September 28, 2011 8:16 PM
> Subject: Re: Strange Power Readings With LDG TW1
>
>
>>    Well, that's why I'm asking. ... I haven't tried the amplifier yet, 
>> and
>> am a little afraid to.
>>
>> I'll wait to see what others say, and see about doing power readings with
>> another meter.
>>
>> 73 from Tom Behler:  KB8TYJ
>>
>> ----- Original Message ----- 
>> From: "Barbara Lombardi" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Wednesday, September 28, 2011 9:13 PM
>> Subject: Re: Strange Power Readings With LDG TW1
>>
>>
>>> That's good to know about the autotuner in your radio as that was one of
>>> my
>>> questions.  This one in the 870 tunes very well also.  Maybe you might
>>> want
>>> to put another power meter on and see if it reads the same reflected
>>> power.
>>> That doesn't sound too good hi hi.
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: For blind ham radio operators
>>> [mailto:[log in to unmask]]
>>> On Behalf Of Tom Behler
>>> Sent: Wednesday, September 28, 2011 8:27 PM
>>> To: [log in to unmask]
>>> Subject: Strange Power Readings With LDG TW1
>>>
>>> Hi, folks.
>>>
>>> Maybe I ought to go back to basic antennas 101 class, but I just found
>>> out
>>> something with my Carolina Windom 160 compact that doesn't quite make
>>> sense
>>> to me.
>>>
>>> I am testing out the antenna to see if water got back into it after the
>>> week
>>> of rain we have had here, and I discovered some strange power readings
>>> with
>>> my LDG TW1 talking watt meter.
>>>
>>> Right now, my Carolina Windom, such as it is, seems to be resonant on 
>>> the
>>> lower end of 80 meters--right around 3.600 MHZ.
>>>
>>> As expected, then, when I go to the upper phone part of the band, say
>>> around
>>> 3.976 MHZ, my sWR rises dramatically to a blistering 6.0 to 1.
>>> (ouch!!!!!!)
>>>
>>>
>>> Interestingly, though, the auto tuner in the TS590 tunes the antenna,
>>> which
>>> was a bit of a surprise to me.
>>>
>>> I then took some  forward and reflected power readings with my TW1, and
>>> was
>>> told that the forward power was 102 watts, while my reflected power was
>>> 52
>>> watts.
>>>
>>> Again, this is with the auto-tuner engaged.
>>>
>>> Can someone tell me what is going on here?
>>>
>>> To be honest, I'm still a bit hesitant to use the Carolina Windom, given
>>> the
>>>
>>> water problems I have had of late.
>>>
>>> Would this antenna be safe to use on the top part of 80 meters, since 
>>> the
>>> auto-tuner clearly tunes it, or am I just kidding myself here.
>>>
>>> And, could I safely use this antenna on the upper part of 75 meters with
>>> my
>>> Tentech 238A manual tuner and Ameritron
>>> AL811H amplifier?
>>>
>>> I guess I'm now a bit gun shy.
>>>
>>> 73 from Tom Behler:  KB8TYJ
>>>