Ah YES I noticed it is for a multi band antenna. 2 wavelengths 3540 = 265' 4 wavelengths 7080 = 265' 6 wavelengths 10600 = 265' 8 wavelengths 14160 = 265' 12 wavelngths 21240 = 265' 16 wavelengths 28320 = 265'
Multiply the 265' by velocity factor of the coax and you will be someplace just a bit over 200 feet. the 10mhz band is off a bit. So OK... other than that 80, 40, 20, 15,10 are all harmonically related. As I said 50 in and 50 out. If the OP runs this vertical on 17 and 12m then yes he will have maybe a 1.5 / 1 mismatch caused by the coax. But the antenna isn't designed for 17 and 12. I cut all the 3/4" CATV in my system with a Hewlett Packard HP 4815A Vector Impedance Meter. Any 1/2 wave mult the the SWR is the same in as out. Any ODD 1/4 wavelength multiple creates a transformation With Multiple 4 hi stacks of yagi's I have many of those in the system as well. 75 ohm cable works well to put pairs or quads of yagi's together. The only thing that maybe won't be perfect is the actual vertical itself may not be a 50 ohm input. His vertical is a Hustler 6BTV. 73 John k9uwa On 31 Mar 2020 at 22:39, Jim Brown wrote: > On 3/31/2020 8:52 PM, John K9UWA wrote: > > Cut the hardline to multiples of 1/2 wavelength and the swr will be 1 to 1 > > on > > both ends. 50 in 50 out. > > Did you notice that this is for an all-band antenna? > > 73, Jim K9YC > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to j...@johnjeanantiqueradio.com > John Goller, K9UWA & Jean Goller, N9PXF Antique Radio Restorations k9...@arrl.net Visit our Web Site at: http://www.JohnJeanAntiqueRadio.com 4836 Ranch Road Leo, IN 46765 USA 1-260-637-6426 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
