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I also use the F81 connectors when a cable is too short. The ones you show look to be excellent quality. The cheap ones don't grab the center conductor of the coax very well. You can test an F81 by inserting a piece of 18 gauge solid copper wire, which is the same gauge as the center conductor of RG6.
Your 91XG is doing OK for Fox. I'm more concerned about what is causing the errors for 10.1 and 33.1 which would make a DVR recording less than enjoyable.
Are you trying to power the preamp thru the AC7, or doing it locally at the preamp location with its AC adapter?
I need to think a little more about my answers, and will come back later.
Last edited by rabbit73; 4-Nov-2014 at 12:12 AM.
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