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DC Block

Posted: Sat Jul 17, 2004 10:41 am
by kq6qv
Some splitters will pass DC through all 3 legs. If such a splitter came between the power injector and the mast-mounted amplifier then the DC would go some place unintended. Some antennas and some TVs are effective short circuits for DC. That short circuit would kill the DC at the amplifier, and thus the amplifier would not work.

A DC Block is just a coupling with a capacitor inside that will not pass DC. This capacitor also will not pass the 60Hz AC that Winegard uses. Putting the DC Block in the line with the