[Icom] AT-500 again

Tue, 26 Nov 2002 12:27:27 -0800

Hi Doug,

There is a set of AT-500 documents here:

http://www.qsl.net/icom/manuals.html

The AT-500 gets the band-select voltage, the +8V reference and ground from
the radio. The SWR matching range of the AT-500 is specified as 1:3 ~ 3:1,
but it will do better than that in practice.

You can also power the autotuner remotely from +13.8V V DC, if there is no
mains outlet in the attic.

Best 73,
Adam, VA7OJ/AB4OJ
North Vancouver, BC, Canada
http://www.qsl.net/ab4oj/
Icom FAQ site:
http://www.qsl.net/icom/

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of Doug Faunt N6TQS +1-510-655-8604
Sent: Tuesday, November 26, 2002 11:48
To: [email protected]
Subject: [Icom] AT-500 again

Thanks for the information on the AT-500.

The application for which I am considering trying to find one is this:
I'd put it in the attic, about 50 feet from the operating position.
I'd be using it with an IC756PRO, currently, and will be adding an
amp soon.  I want to have a short coax pigtail to a balun outside the
attic, and then use open wire feeders to a dipole that's at maximum about
75M length, 125'.  I want to be able to use that dipole on 160M and
80M, covering significant portions of both bands.  If necessary, I can
trim the feedline or dipole elements to make the match easier, and try
both 1:1 and 1:4 baluns.

I can do this with many automatic tuners at 100W, and I have an old
AH2 that I'll put into service, until I get an amp running, but I want
to plan ahead.

What connections does it use?  The band-select voltage from the radio?
Anything else?

73, doug