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Old 5-Jun-2015, 12:59 PM   #3
Antennas Direct Tech Supp
Join Date: Jan 2010
Posts: 2,932
A plastic cap is adequate to keep moisture out of the connector. It doesn't matter for the rest of the amp as the enclosure isn't moisture tight anyway. A terminating cap, if you have one handy, will also work. The unused input doesn't need termination, though.
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