Disconnect the wires at terminals 3 and 7 from the control box and
measure
the resistance between them. It should read 500 ohms. ( If it is open,
there is
a break in the potentiometer or the control cable.)
You can use an ohmmeter to determine position by measuring the resistance
between either wire and ground which is a good trick if one side is open.
This trick can be used on all HAM series rotors.
de Tom - N4KG
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: K7LXC@contesting.com
Sponsored by Akorn Access, Inc & N4VJ / K4AAA
|