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Old 18-Oct-2020, 12:28 AM   #9
rabbit73
Retired A/V Tech
 
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,709
To check the RCA, you have to make some voltage measurements.

First you check the voltage coming out of the power inserter without the preamp connected:



Next, you check the voltage at the upper end of the coax without the preamp connected:



Then you check the voltage to the preamp with the preamp connected. This is a little more difficult, because you need access to the coax center conductor when the preamp is connected. I use a T-adapter:



Attached Images
File Type: jpg RCAPreampVoltage1.jpg (159.6 KB, 439 views)
File Type: jpg RCAPreampVoltage2.jpg (154.7 KB, 447 views)
File Type: jpg RCAPreampVload3.jpg (168.8 KB, 438 views)
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