[amsat-bb] Re: Remoted rotator controller

mvm amvm at skynet.be
Thu Jun 5 02:25:54 PDT 2008

Hi Scott,

I assume you are using RS232 from the PC to the controller? It would be 
challenging to have a 200' serial connection on copper. The first RS232 
specification talks about 50' maximum length at 19k2 but in practice 
this can be higher when speed is dropped. However, worth a try and if it 
doesn't work you can consider RS232 extenders. These typically use Cat5 


Scott Townley schreef:
> Contemplating my Yaesu G-5400 and not so fond of the idea of running 2x 
> 6x18AWG cables nearly 200'...(more accurately, paying for them).
> Has anyone ever put the controller at the antenna base and instead ran the 
> computer<->controller wires the long distance between the computer 
> interface and the control box?  Seems like it would be a lot cheaper, in 
> the sense of fewer wires of a smaller gauge, and not so much worry about 
> voltage drop etc.  My setup is low to the ground, so the control box would 
> be ground-mounted in a weatherproof shelter.  The "digital" run would be 
> the 200' or more, and the "analog" or "power" run only 20' or so.  If done 
> the traditional way these lengths would be reversed.
> Or is this a stunningly dumb idea for reasons yet-unknown to me?
> Scott Townley NX7U
> Gilbert, AZ  DM43di
> mailto:nx7u at arrl.net
> http://members.cox.net/nx7u 
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