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Old 14-Aug-2020, 10:10 PM   #8
Retired A/V Tech
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,738
Originally Posted by rsw1941 View Post
Because I was having issues with an earlier preamp and thought I might replace it, I located the connection at the bottom of the 10-foot mast, not up directly under the antenna. This added at least 10 feet to the cable from the balun to the preamp. BAD idea?
I agree with jrgagne99; go for safety and convenience. The coax loss (attenuation factor) for RG6 coax is much less for VHF than UHF. It's only 1.4 dB per 100 ft for channel 2, 2.8 dB for VHF-High, and 5 dB for UHF.
If you can not measure it, you can not improve it.
Lord Kelvin, 1883
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