[TowerTalk] yaesu g800sa

[K0DAN]

Yes, if you can access the control cable at the base of the tower you can 
apply +/- 15VDC to pins 4 & 5 and the rotor should turn. Be sure to first 
remove the cable from the controller in the shack.

The speed control varies the voltage to the motor, probably up to 18-20 V 
(I've never tested the limits) but be cautious before you put more than 
about 18V across the motor!

If you have 300+ of control line to the rotor that could be a pretty hefty 
loss and you should be using pretty hefty cable (at least for pins 4/5) to 
compensate for all that resistance.

BTW pins 1+2+3 are the 500 ohm potentiometer (pin 2 is the wiper) which 
measures the position of the rotor.

The schematics are readily available online. If you can't find them, drop me 
a line offlist.

GL es 73

Dan
K0DAN

----- Original Message ----- 
From: "Stevo B" <stevobags at gmail.com>
To: <towertalk at contesting.com>
Sent: Monday, May 02, 2011 12:58 PM
Subject: [TowerTalk] yaesu g800sa


> Hey Guys,
>
> So, I put the antenna and rotor back up yesterday.  My rotor refuses to
> turn.  I am running about 350 feet from the controller to the rotor.
>
> Anyone know of a way to check from the ground if the rotor is good and
> possibly just the control box.  I looked inside the control box and only
> four wires go to the pin assembly.  Can I just apply power to two of the
> correct wires to see if it works?
>
> Appreciate any help you might have.
>
> Steve
> N2MAI
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