I'd support Guy Olinger's K2AV comments re coax quality.
I bought a copper braid CCS "satellite cable" variant of RG6U from ebay that
looked fine and would probably have worked fine for short runs for TV use but
the measured attenuation at 1.8MHz was 3.6 dB per 100m. Given that we were
using 750m of it on a long cable run to a remote beverage field, it didn't work
very well, even with a head preamp.
The high attenuation must have been skin depth of the copper plating and
Chinese "value engineering" - connectors were OK and there was no sign of rust.
I'm now using CX167 Direct Bury, which has a solid copper core and a measured
loss of 0.55 dB per 100m at 1.8MHz. Twice the price in a closeout sale but way
better!
That said, I'm sure that decent RG6U from Commscope et al will be OK but I'll
never buy CCS again...
73,
Jeremy G3XDK/G4AQG
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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