[amsat-bb] Re:G-500A

["Dave G." <dmg@xxxxxxxxxx>]

Bill,

I wasn't sure at the time I wrote you, but I *do* have the G-
500A manual...

At the rotor:-
A 500 Ohm potentiometer is wire across pins 1 and 3, with the 
wiper connected to pin 2.
 
The "Down" coil of the motor is connected between pin 4 and 
pin 6.
The "Up" coil of the motor is connected between pin 5 and pin 
6.

The antenna relay contacts are positive (+ve) to pin 7, and 
negative (-ve) to pin 8.

I measure (at the rotor) the resistance of the coils to be 
~9.7 Ohms each,
In my case, the potentiometer measures out at 510 Ohms...

I hope this helps..

Dave KK7SS



On 27 Mar 2005 at 20:41, William Fry wrote:

> Hi all,
> Anyone know what the readings in ohmns would be from the Yaesu
> G-500A would be, that is (motor, pot, etc.) Last fall I was
> getting water in the shack through the coax, 50 ft. up to the
> tower. Checked it out and couldn't fine any place that water
> would get in the coax. The rotor is waterproofed at all
> joints, screws, cable etc. (bad climate) the rotor won't turn
> at all now (it was working last fall, about 6 months since I
> used it last) no matter how long I keep the (up) switch
> pressed, thanks, Bill, VO1OR. ---- Sent via
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