[amsat-bb] Re: antenna positioning

[Clifford Buttschardt <cbuttsch@xxxxxxxxxx>]

I think he also had a photograph of a Gray code angle encoder that we
could duplicate.  There is no reason for miniaturization when steering
antennas of such a large size.  Even a photographic master six inches in
diameter using LED's would work just fine. Cliff K7RR

On Fri, 12 Jan 2001, Rob Janssen wrote:

> (optical encoders)
> 
> ON6UG did this over a decade ago...  maybe you can find some of his papers
> in old AMSAT papers or magazines.  He used standard rotators and only
> incremental encoders (which he kept powered and connected to up/down counters
> all the time)
> 
> Much simpler and much less expensive than absolute encoders.
> 
> Rob
> 
> -- 
> +--------------------------------+--------------------------------------+
> | Rob Janssen   pe1chl@amsat.org | WWW: http://www.knoware.nl/users/rob |
> | AMPRnet:   rob@pe1chl.ampr.org | AX.25 BBS: PE1CHL@PI8WNO.#UTR.NLD.EU |
> +--------------------------------+--------------------------------------+
> 

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