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Old 19-Apr-2016, 1:34 PM   #1
dustyz
Junior Member
 
Join Date: Jan 2013
Location: KY
Posts: 26
Old Distribution Amps

Found these installed in an old building, and they were apparently working with an antenna in the recent past. Has anyone ever used such a thing, and would they be useful in a modern setup?

Silver one
Model: CUVB-54P - 30db gain?

Channel Master
Model: 7354 - 20db gain?

Quite old, I'd say...
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Old 21-Apr-2016, 7:47 PM   #2
rabbit73
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Join Date: Aug 2012
Location: S.E. VA
Posts: 1,954
They can be useful if they are still working. They are designed to put out a strong signal for large distribution systems. The tilt controls allow you to make the high and low channels about the same strength, because the high channels get weaker faster on long coax runs.

The -30 and -20 dB markings are not the amp gain. They tell you how much weaker the sample port is than the main output port. This allows you to adjust the gain of the amp without disturbing the main output when the amp is in use.

The technician would connect his signal level meter (which reads in dBmV) to the sample port for a reading, and add 20 or 30 dB to the reading on his meter to know what the output signal was.
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Last edited by rabbit73; 21-Apr-2016 at 7:52 PM.
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Old 4-May-2016, 11:40 PM   #3
WIRELESS ENGINEER
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Join Date: Dec 2013
Location: Eastern Ohio
Posts: 101
Used those for many years and they were EXPENSIVE

And even though the VHF 2-6isnt needed anymore
And the gain above channel 51 isn't needed, they can still be used
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