On 4/14/2011 10:33 AM, Bill Wichers wrote: > There is a test used when installing this cable commercially called > "PowerSum NEXT". If you look that up you should be able to get an idea > of the coupling between pairs.
These are most likely to be single-number values that average the crosstalk over a broad frequency range, but the actual performance will vary as a function of frequency, and with the quality of the cable. I haven't done measurements, but I would expect cross-talk to be lower (better) at 2 MHz than at higher frequencies. Published loss data for CAT5/6 shows numbers good enough for use with RX antennas. That said, the primary consideration is probably what Herb noted about how well (poorly) indoor-rated cable is likely to stand up to outdoor conditions. Although I love CAT5/6/7 for lots of uses, I wouldn't use it for outdoor runs to antennas. The best choice for Beverages and other RX antennas is low-cost coax like RG58s or RG59s, with construction that makes them rated for the outdoor conditions where you live. 73, Jim K9YC _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
