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Re: Computer Rotor Controllers



Greetings David. I did this a while back, only I used the CD 45 rotor (with
no brake). I had to rewire the position indicator in both the rotor and
control unit. If you look at the schematic you can see that the wiper of the
position indicating pot is grounded instead of floating as in other rotors.
Since I was using Uni-Trac which, like many other controller interfaces,
uses a 5 volt reference I also changed out the 12 volt zener and put in a 3
terminal 5 volt regulator. The idea here is to get a 5 volt swing from one
end of rotation to the other.

I found a Yaesu G-500A rotor on the auction site for a reasonable amount so
I grabbed it.

This worked well and I tracked the digital birds with it until I got bored
reading other people's mail. I later found a G-450A Yaesu to replace the
CD-45. That rotor allowed 450 degree rotatiion. I do not run them mounted
together. The azimuth is mounted inside the tower and the elevation just
above the top section neck.

Good luck!

----- Original Message -----
From: David & Karen Jackson <jackson271@home.com>
To: <amsat-bb@AMSAT.Org>
Sent: Friday, February 23, 2001 9:26 PM
Subject: [amsat-bb] Computer Rotor Controllers


> Hello folks,
>  My name is David I am  KE4OPA. I am new to the list so please forgive any
> repeat in Questions.
>    I have a Ham 4 Azimuth rotor and a Kenpro  KR 500 Elevation  rotor and
I am
> looking for a inexpensive way to interface them to a computer for auto
> positioning. Can someone please point me in the right direction. (no pun
> intended)
> David
>
>
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>

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