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So I ended up purchasing the 10 foot Antennacraft Yagi, and a UVSJ. I hooked up the DB4e, and was fairly impressed at the signal quality. The 20 dB amp also delivered >= 75% signal strength to my HDHomeRun box.
I thought I'd improve it even more by removing ~50 ft. of extra RG-6. After shortening an re-terminating one end of the cable, the signal seemed to drop a bit. It dropped again after shortening the other end. I need to go back and investigate my termination job, but there isn't much to go wrong.
Using RG-6 strippers, I inserted the cable, rotated the stripper around a bunch of times, exposing the center conductor, for 1 cm, and the shielding for another 1 cm. I peeled back the shielding and twisted a connector all the way on (until I could see the nylon insulation was flush with the opening of the connector). I then used the crimper to compress the connector barrel onto itself. Mechanically, it feels solid.
I'll have to sleep on it. Thanks for your advice!
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