On May 19, 2009, at 6:57 PM, JAMES HANLON wrote:
> Karl,
>
>> From your description of the problem, I suspect that it may be a
>> circuit one. If possible, measure the voltage across the relay
>> coil and see if, when it "sticks", the coil voltage has gone to
>> zero. If it is staying closed with zero voltage across the coil,
>> then it is a relay problem.
>
> I'm not familiar with the relay used in the 509, but dry reed relays
> are quite common. My Mouser catalog has five pages of them. If you
> can give me a physical description and a manufacturer's name and
> part number I can probably help you find a replacement.
You can download the complete manual from Ten-Tec for free:
http://radio.tentec.com/downloads/obsmanuals
Geoff.
--
geoffrey mendelson N3OWJ/4X1GM
Jerusalem Israel geoffreymendelson@gmail.com
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