[TowerTalk] Yaesu G-1000DXA Rotator Measurements

[Jim Brown]

On Wed, 16 Jun 2010 16:53:17 +0200, Marinus Willemstijn wrote:

>Is there a way as with HyGain rotators to measure the wires going to the
>rotor of the the Yaesu G-1000DXA to determine which are wires 1 - 6.

The schematic shows a six wire cable running between the rotor and the 
controller, but only five are used. Two wires are connected to the DC motor.  
They go to pins 4 and 5. Measured at the rotor, they read 8.75 ohms.  The 
other three wires go to a 500 ohm pot that senses the position of the rotor. 
Pin 1 is the high end of the pot, pin 2 is the tap, and pin 3 is the cold end 
of the pot, and is connected to the frame of the rotor. There is no 
connection to pin 6 at the rotor. 

Pin numbers in the connector at the controller start with the notch and go 
along the long side of the connector (that is, pins 1, 2, and 3 are on the 
same side). Pin 4 is next to pin 1, pin 5 is next to pin 2. 

When measuring these wires, you'll need to account for the additional 
resistance of the wire between the controller and the rotor. 

73, Jim K9YC