[amsat-bb] Re: inquiry about homebrew az-el systems

Lizeth Norman normanlizeth at gmail.com
Sun Feb 24 20:33:23 PST 2013

Google is your friend here. I can kit a G-5500 class rotator from
available shafts, bearings, gears, motors and such for less than $300.
That's not accounting for economies of scale.
 Add some stuff from radio shack and the appropriate length of wire
and you have for less than $500 a complete Az-El rotator and
associated driving stuff, less antennas (which can be made reliably
and cheeply) and antenna support.

A quick search on CL will yield a tower section reasonably. I got a
bunch at $70 just a few months ago.

Step over from Skycraft to AES and see what they charge for this stuff.

The rotators sold now cannot be repaired, period. When the bit of kit
on the top of my tower goes, I'll probably build one. Much cheaper
that paying the 1500 that the top line mfgr wants for theirs..

I submit that the aformentioned project could be homebrewed by someone
with a torch and access to a junkyard and tools no more complex than a
grinder. The interface electronics are a little more difficult to
build, but certainly wouldn't take a lathe.

Norm n3ykf

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