Patrick, start looking at how and why the SWR in the line from the tuner to
the antenna is 1:1. That cannot be right unless the antenna input impedance
is exactly the same as the Zo of the line. If it were, the tuner would not
be required.
Something seems amiss here . . .
73/72, George
Amateur Radio W5YR - the Yellow Rose of Texas
Fairview, TX 30 mi NE of Dallas in Collin county EM13QE
"In the 57th year and it just keeps getting better!"
<mailto:w5yr@att.net>
----- Original Message -----
From: "Patrick Gardella" <pgardella@yahoo.com>
To: <tentec@contesting.com>
Sent: Saturday, June 28, 2003 4:03 PM
Subject: [TenTec] Low power output on Argonaut V
> Need some advice from the guru's out there. Of course, it's Saturday, and
TenTec service is
> closed on weekends.
>
> I've got an Argonaut V. Been using it fine for a while, keeping my power
level around 5W, but I
> decided to actually up the power to the max to see what it would do. I
was quite surprised to see
> that I could not get more than 14W out of it above 30m! This is both with
the built-in power
> meter, as well as an MFJ-949E.
>
> Something isn't right here. So I checked the SWR was from the rig to the
tuner (since I had a 1:1
> from the tuner on out to the antenna). I switched into bypassed dummy
load, and keyed up on CW,
> with the power set to max (full clockwise). It still showed 14W and the
tuner said 1:1 SWR, which
> is what I expected. But when I use the built in SWR meter (key up, hit
the "split" button), it
> showed an SWR greater than 2.5:1 (pegged the meter). Trying the reflected
power function ("A-B"
> button), it shows a reflected power of around 7W.
>
> 160m - 18W
> 80m - 20W
> 40m - 21W
> 30m - 20W
> 20m - 13W
> 17m - 7W
> 15m - 12W
> 12m - 7W
> 10m - 14W
>
> What's going on here?!? Help!
>
> 73,
> Patrick N3EO
>
> P.S. I've done a master reset and I'm using firmware 1.70.
>
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