A digital encoder would be the most accurate. USdigital http://www.usdigital.com/support/glossary#glossary_opticalencoder manufactures inexpensive encoders. With these and a step servo drive in example a Gecko drive http://www.geckodrive.com/product.aspx?c=2&i=14456 one could build a rotor that would be accurate to a thousand of a degree.
Fred KF0AK
I am looking to get back on the air and would like to put up a tower.
What should I expect in the way of cost for a 40 ft, tilt tower?
Is this a project I can do myself or would I be better off paying to have it installed?
Are there any permits needed for a tower of this height?
Gilbert,
I do not see that anyone answered your question. What sort of tower did you wind up with?
Larry W7IN
----- Original Message ----- From: "Gilbert Mackall" [email protected] To: "amsat-bb" [email protected] Sent: Friday, September 19, 2008 2:10 PM Subject: [amsat-bb] Tower question
I am looking to get back on the air and would like to put up a tower.
What should I expect in the way of cost for a 40 ft, tilt tower?
Is this a project I can do myself or would I be better off paying to have it installed?
Are there any permits needed for a tower of this height?
Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
participants (3)
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Fred A Parker -
Gilbert Mackall -
Larry Gerhardstein