Yes there is a difference. But according to Amphenol spec sheet, "Two distinct types of 75 Ω BNC's are available, and both mate with each other and with 50 Ω BNC's. the difference is in the dielectric This I doubt will be an issue at IF frequency.
This is also backed up in the highly reliable Wikipedia article on BNC ;-) On 9/16/2012 11:11 PM, Alan Bloom wrote: > Yes, the cable impedance does not matter but the connectors do. The > 75-ohm cable probably has 75-ohm BNC plugs, which as I recall have a > smaller pin. They might not make reliable connections with the 50-ohm > sockets on the K3 and P3. > > Go ahead and try it, but if the connections seem flakey you should get a > real 50-ohm cable. > > Alan N1AL > > > On Sat, 2012-09-15 at 17:21 -0700, Jim Brown wrote: >> On 9/15/2012 5:01 PM, Vic K2VCO wrote: >>> Just try one of the non-50-ohm cables and see if it works >> Cable impedance absolutely does not matter for such a short run at the >> IF frequency. >> >> 73, Jim K9YC >> ______________________________________________________________ >> 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 >> > > ______________________________________________________________ > 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 > ______________________________________________________________ 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
