[TowerTalk] Hygain rotor controller question

[Al Kozakiewicz]

My bad. It is a push-on push-off.

Al
AB2ZY

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of WW3S
Sent: Sunday, November 22, 2020 8:43 PM
To: Wes; towertalk at contesting.com
Subject: Re: [TowerTalk] Hygain rotor controller question

I'm working on a unit from a SK estate....the switch, is it push/pull? 
The unit I have acts like a pushbutton, you can push it in, but it 
doesnt stay in.....when we first tested the unit, we thought maybe the 
pot was bad, as the rotor turns, but nothing but full scale on the 
indicator (never moves), I think I may to try to bypass that switch and 
see what happens....

------ Original Message ------
From: "Wes" <wes_n7ws at triconet.org>
To: towertalk at contesting.com
Sent: 11/22/2020 10:40:59 AM
Subject: Re: [TowerTalk] Hygain rotor controller question

>Exactly.
>
>http://www.radiomanual.info/schemi/ACC_rotator/CDE_HAM-4_user_W0MTU.pdf
>
>Page 6.
>
>On 11/22/2020 8:31 AM, Jim Rhodes wrote:
>>Calibration. Push the button/knob, turn button/knob to full scale, push
>>again to go back to operate mode, then don't touch it again.
>>
>>On Sun, Nov 22, 2020, 09:08 Al Kozakiewicz <akozak at hourglass.com> wrote:
>>
>>>I've had a "new" (never used) HAM IV and controller  I bought on eBay a
>>>decade ago. Recently put up a short tower with a C3, 6M and 2M yagis and
>>>decided to use it. The back of the controller says Telex/HyGain, so I
>>>assume it is fairly old.
>>>
>>>Worked on the bench. Worked outside after I got the tower and antennas
>>>assembled. Brought it inside, did the final wiring and the position meter
>>>was stuck at full scale. Shorting the rotor pot legs to ground did not
>>>change the meter position.
>>>
>>>Long story short, I took it apart and brought it to the workshop to
>>>diagnose, figuring it is something simple (there is nothing to the meter
>>>circuit). Poking around, I notice there is a switch on the calibrate pot
>>>that is activated by push/pull and is not mentioned in the manual I have or
>>>shown on the schematic. I had apparently pushed it while wiring the back
>>>panel. Pulling it out restored the operation of the meter circuit.
>>>
>>>What the heck is it for?
>>>
>>>Al
>>>AB2ZY
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