[TowerTalk] Channel master operation?

[Tim Duffy K3LR]

Hello Jim,

I am not sure what model number you are asking about, however here is a
YouTube video about the most popular one. The rotor calibration is based on
calibrating rotation time - that is how they do all the functions with only
3 wires.

http://www.youtube.com/watch?v=pMpdnLXy6ng&feature=youtu.be

73,
Tim K3LR

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Jim Miller
Sent: Tuesday, September 20, 2011 5:22 PM
To: TowerTalk at contesting.com
Subject: [TowerTalk] Channel master operation?

I've got a Channel Master to rotate my Hexbeam. It has only three wires that
control it. Anyone know how this functions to turn and indicate direction
with only three wires?

It has a wallwart that provides power to the control unit that is 18VAC
output. Any idea of the signal levels on the lines? I was going to buy some
TVS diodes for protection but want to make sure I get ones with proper
breakdown voltage.

I can always tear it down myself and scope it out but it would be nice to
avoid if someone had already done so.

Thanks!

Jim ab3cv
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