[TowerTalk] TIC Potentiometer

Fred Sanborn cc-6569 at comcast.net
Sat Apr 5 23:17:46 EDT 2014

I just realized we have 2 TIC Potentiometer threads going here on TT.  
My TIC ring is a model 1122E manufactured 11/05.  I bought it unused 
still in original packaging in 2012.  It was up without issue for a year 
until I had a lightning strike that damaged the original pot.  The 
replacement pot only lasted about 6 months after a cold wet winter here 
in N. IL.

The Alfa SPID rotor has several magnets mounted on a large gear that is 
driven by a smaller gear on the motor shaft.  Each magnet swipes the 
magnetic reed switch mounted on a nearby bracket giving multiple pulses 
per revolution of the larger gear.  My SPID gives one pulse per degree 
of rotation while some give 2 pulses per degree according to the RT-21 
manual.  The TIC motor / direction assy I have is very similar and that 
is what I had envisioned to try and implement.  I would need to know how 
many ring rotor degrees there are per revolution of the larger gear that 
drives the pot.

     73,  Fred  KG9X

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