I have been using Commscope F660BEF for years for both receive lines and transmit coax for my 80M 4-sq using F-connectors. The other year I had a 100' piece of RG6 that had a solid copper center conductor and a copper braid. Compared that to the F660BEF on 1.8 and 3.5 for loss at 100'. I did not see any difference in power loss. I guess the F660BEF has enough copper plate to keep losses low on the low bands. Or maybe I just had a bad piece of copper RG6? N2TK, Tony
-----Original Message----- From: [email protected] <[email protected]> On Behalf Of Frederick Dwight Sent: Friday, April 3, 2020 2:09 AM To: [email protected] Subject: [Elecraft] 75 ohm coax If your 75 ohm coax has a steel/copper coated center conductor, be sure to test it for loss on the lowest frequency band you will use. I experimented with a steel core 160 meter antenna and found it had some additional loss and probably due to the inductance it could be shorter for resonance (10 % perhaps ??) so I abandoned the idea. Never noticed the effect on higher frequencies. Sent from Mail for Windows 10 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
