I did some careful measurements of CAT5 cable a few years ago using a 4 port network analyzer (NOT a 2 port VNA with baluns). On my random sample, the characteristic impedance was within 5% of 100 oh
That's exactly what I was thinking. 1000' foot spools of flooded Commscope RG-6 are well under $100 shipped, last time I bought some off eBay. That's what I feed my Beverages with. Having said that,
That's why it's rated at 100 meters max distance when used for networking. Now before everybody breaks their fingers posting anecdotal evidence to the contrary I have done the same. It worked out gre
I did that. I was testing a small dual-feed DHDL loop (-50 dBi gain) using twisted pairs removed from a CAT 5 cable. On the bench the twisted pair showed 100 ohm of impedance and a loss of about 2.8
Loss can be mitigated by a preamp at the antenna end. One application would to be to feed multiple Beverages at a hub without a relay box with its isolation problems and intermittents. Carl KM1H -- O
For about 7 years Ive run 250' to the trailer at the base of the big tower where it then went another 150' after a router to a microwave Internet link. It was tied to the same bundle carrying all the
I measured 1 dB per 100 feet at 1.8 MHz for my random sample of CAT5. Imagine the loss for 100 Mbit/s data! Rick N6RK _______________________________________________ UR RST IS ... ... ..9 QSB QSB - h
Multiple Beverages at the same feedpoint? When I put up my Beverages, I avoided doing that because I read at least one bad experience of someone who tried that. (My Beverage feed points are hundreds
I didnt say at the same feedpoint; each CAT5 pair is a seperate feed and then you seperate the actual antenna ends and ground rods the 30-40' as suggested. Thats what I do here and there is a minimum
Hi George, Thanks for sharing your work on this. Your observations make sense, especially the comment about the coax shield being grounded minimizing common mode. We know that a multi-element common