[TowerTalk] (another)Problem That Needs Ideas

VR2BrettGraham vr2bg at harts.org.hk
Wed Dec 8 11:10:28 EST 2004


N4GI asked:

>Don't have an RCS8V, but it reminds me of a problem I occasionally have 
>with a sixpack switch...  One or two of the ports on one side are 
>intermittent unless I click the brake of my ham rotor 50 feet above it.
>
>If I don't hear anything when I turn things on, I can click the brake a 
>couple of times, then the relay engages.  I think it's the 10M port.
>
>Odd, but I just have lived with it.  Dirty contacts?

The relays used are 3P2T, with one pole used for locking out the other port 
from
that antenna.

I find that over time, that pole sometimes fails to make contact on the unused
port, thus preventing the port other from selecting it.

Even after cleaning the relay contacts & giving the relay frames a little 
tweak,
it's still intermittent here & the solution has been to leave the cover 
off, so that
I can either apply a little pressure to complete the connection, or merely
wiggle the relay slightly to achieve the same - perhaps what the brake on the
rotator is doing for Blake.

73, VR2BrettGraham



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