The TW1 isn't adjustable
David W Wood
Ham call - G3YXX
FOC # - 1685
Licensed - 1969
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]] On Behalf Of Steve
Sent: Monday, January 02, 2012 3:37 PM
To: [log in to unmask]
Subject: Re: More power output readings--now doubting accuracy of LDG TW1
Tom,
First, I think others have indicated that the TW1 isn't the most accurate
thing around. I don't know that the internal meter in the 590S will be any
more accurate, but it can't be less. I don't own a TW-1 so I can't speak as
to whether there is any facility to adjust it. As long as you are into
intellectual pursuits, why not borrow somebody's Bird Wattmeter, with the
proper element installed and take some measurements compared to your TW1.
Second, I've noticed on my TS-2000, and I assume that the 590S will be
similar, that there are losses when using the internal antenna tuner. My
relative power is down about 14-20 watts when using the internal tuner
versus using an external tuner. I think Bob, K8LR has had similar results.
Steve, K8SP
----- Original Message -----
From: "Tom Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, January 01, 2012 2:45 PM
Subject: More power output readings--now doubting accuracy of LDG TW1
> Hi, folks.
>
> I know, I know, it's just the professor in me, but this output power issue
> I've been dealing with is intellectually interesting, if nothing else. I
> fully realize that 20 watts either way isn't going to make a difference in
> terms of who hears me, how well they hear me, etc., but I have to report
> on
> my latest set of output power readings this morning.
>
> First of all, When I use my Astron RS35 power supply, and take output
> power
> readings with the watt meter on the TS590, things now seem to be pretty
> stable at 100 watts output on either a resonant frequency for one of my
> antennas, or when using the TS590 auto-tuner. Obviously, the resonant
> frequency readings are going to be the most revealing, so those are the
> ones I have the most faith in.
>
> What I still don't understand is why my LDG TW1 seems to be about 20 watts
> off with its output power readings. For now, I'm going to go with the
> readings the radio gives me, since the rig is what needs to be kept happy.
>
> Between Mike Duke and Steve Forst, I do have some good instructions if I
> ever want to tweak the output voltage on the Astron RS35, but I think I'll
> hold off on doing that for a while until I see if things remain as stable
> as
> they are right now.
>
> Thanks to all for your your continued interest in, and help with this
> issue.
>
> 73 from Tom Behler: KB8TYJ
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