[CQ-Contest] RE: [YCCC] TIC Ring Potentiometer Failure?

[Billy Cox]

Jim, and John ...

I know John means well, and I suggest trying this also, BUT ... be 
VERY careful, as in IF the pot does/has failed, then the odds go UP 
greatly that you'll rip the coax off the yagi too ... as the motor does
not have stops ... it will turn until it stalls out <or something breaks>

Let's not inquire as to how I learned this lesson with my TICs ... B-(

73 Billy AA4NU

-----Original Message-----
From: John Allen <jallen at vhfcom.com>
Sent: Nov 28, 2004 11:48 AM
To: Jim Idelson <k1ir at designet.com>, TowerTalk Post <towertalk at contesting.com>, 
	CQ-Contest Post <cq-contest at contesting.com>, YCCC <yccc at yccc.org>
Subject: [CQ-Contest] RE: [YCCC] TIC Ring Potentiometer Failure?

Try running the rotor through it's entire rotation back and forth several
times.  I have this problem from time to time with a 1022 as far back as
1996 or earlier and this works for me.

73, KB!  John K1AE

John Allen  - PC Support Solutions www.pcsupportsolutions.com
PC House Calls: Computer HW/SW/Network debugging, installation, maintenance,
and upgrades
mailto:john at pcsupportsolutions.com  978 779-6189 M: 508 361-6229

-----Original Message-----
From: yccc-bounces at yccc.org [mailto:yccc-bounces at yccc.org]On Behalf Of
Jim Idelson
Sent: Sunday, November 28, 2004 12:25 AM
To: TowerTalk Post; CQ-Contest Post; YCCC
Subject: [YCCC] TIC Ring Potentiometer Failure?


Hi all,

Not far into the contest this weekend, we began to have trouble with the TIC
1022E [a 2003 unit]. It exhibits erratic readout and rotation behavior. The
load is an Optibeam 4-el 40m yagi. I recently tightened the drive motor to
eliminate slippage of the ring gear. I suspect something has happened to the
potentiometer that feeds back rotor position back to the controller. A
search
of the towertalk archives shows that there have been problems like this in
the
past [1996/1997]. I went up the tower to have a look this afternoon, but did
not see enything suspicious. There were no bad external wiring connections,
etc. I sprayed the drive shaft and what looks like the position pot shaft
with
contact cleaner from the outside. That did nothing, but I suspect I would
have
to disassemble the motor to get the spray into the right places.

Any suggestions?

Thanks,

Jim Idelson K1IR
email    k1ir at designet.com
web    http://www.designet.com/k1ir

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