Re: [amsat-bb] Slowing down the Yaesu 5400

[Michael Pfeuffer <wq5c@xxxxxxxxx>]

Looks like a kit is available from www.vhfcomm.co.uk for 35 pounds (about 
$55 ).  Has anyone built this?  If so, do the instructions include a copy 
of the magazine article, or do we need to get a back issue as well?

Thanks,
--Mike, WQ5C



At 05:51 PM 8/27/03, Mike73@aol.com wrote:
>In a message dated 8/27/03 6:09:17 PM Eastern Daylight Time, vlfiscus@mcn.net
>writes:
>
> > 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
>remember
> >  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:
>
>http://www.kuhne-electronic.de/
>
>The PCB is available for 7,90 Euro according to the pricelist.
>
>73,
>Mike, N1JEZ
>AMSAT #29649
>Local Area Coordinator
>"A closed mouth gathers no feet."
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