John,
While I have not done this mod to the Orion II, I work in acoustics and
would suggest this experiment: If you can remove the relay from the
board, and provide flexible wire leads to it, you may lessen any noise
by wrapping the relay in a rubber cushion. Foam might also work, but
today's foam often sucumbs to foam rot from humidity exposure in a few
years. You want a soft rubber as opposed to a hard rubber. You could
try this experimentally before deciding on the best material. You want
the relay and its leads to not conduct any vibration (sound) to the air
or to the board it mounts upon.
Gud luck,
Stuart Rohre
K5KVH
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