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[TenTec] Low power output on Argonaut V

To: <tentec@contesting.com>
Subject: [TenTec] Low power output on Argonaut V
From: pgardella@yahoo.com (Patrick Gardella)
Date: Sat Jun 28 21:27:31 2003
Sorry, wasn't clear.  I can *tune* the feedline to be 1:1.  Normally it's 
higher than that 1:1 up
to around 6:1.  From the rig to the tuner (bypass dummy load mode), the tuner 
shows a SWR of 1:1. 
The rig shows over 2.5:1.

73
Patrick N3EO

--- "George,  W5YR" <w5yr@att.net> wrote:
> 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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