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Re: Slowing down the Yaesu 5400

In a message dated 8/27/03 6:09:17 PM Eastern Daylight Time, vlfiscus@mcn.net 

> Someone away back had a way to slow down the 5400, so the azimuth wouldn't 
>  rotate as fast and whip the antennas around and for more accurate 
>  pointing.  I can't remember their method or interface. Does anyone 
>  it?
>  I think it involved controlling the rotor motors with a stepper type setup 
>  or pulsing the supply voltage.

Michael, DB6NT described his design in VHF Communications Q2 - 2002 pg 66-68. 
It uses pulse motor control and a semiconductor relay. You can see it in his 
catalog available at:


The PCB is available for 7,90 Euro according to the pricelist.

Mike, N1JEZ
AMSAT #29649
Local Area Coordinator
"A closed mouth gathers no feet."
Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
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