[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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