[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

Re: G5400 solutions

Michael is most correct of course but I've seen where TWO control boxes have
faulty switches!  Here are some measurements that will help determine
if the rotor is sound:
4 to 5	8 ohms
4 to 6	4
5 to 6	4
Here are some voltage measurements:
left switch on	4 to 6 and 5 to 6	30 volts AC
right switch on 4 to 6 and 5 to 6	30 volts AC
The same numbering system works for both azimuth and elevation.  If the voltages
are there then look toward the rotor or rotor wiring for the fault.  If the
resistance is right, then look toward the control box for the fault.... 
    Cliff K7RR

"Michael P. Olbrisch" wrote:
> YES!  You have 3 wires going up to the ele rotor.  They are labeled E-4.
> E-5, and E-6.  E-6 is your common.  E-4 is your down line, and E-5 is your
> up line.
> Connect a DMM as close to the rotor as you can get, like the terminals on
> the rotor, and have someone in the shack push the buttons.  Test the voltage
> going up, E-5 red and E-6 black DMM leads.  They move the red lead to E-4
> and have them press down.  If the readings from E-5 and E-4 are the same, it
> is your rotor.  If not, it is wiring.  You already eliminated the control
> box.
> Good luck - hope this is the answer you were looking for.
> Mike.
Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org