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1. [Towertalk] 40 meter yagi matching (score: 1): Author: K4MK@triad.rr.com (Kent Miller); Date: Wed, 02 Oct 2002 12:06:10 -0400; I should have said it is 350 ft. of Bury-Flex, not just plain 52 ohm coax -- the loss very well may affect the swr readings some, but at 7.0 Mhz., I would consider the loss negligible with this coax.; /archives//html/Towertalk/2002-10/msg00072.html (6,696 bytes)
2. [Towertalk] 40 meter yagi matching (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Wed, 2 Oct 2002 09:41:34 -0700; Hi Kent, All coax, like all conductors, have Ohmic (resistive) loss, regardless of the frequency of operation. It's this loss that takes over when frequencies used fall much below 30 MHz. You'll note; /archives//html/Towertalk/2002-10/msg00075.html (8,369 bytes)
3. [Towertalk] 40 meter yagi matching (score: 1): Author: n2mg@eham.net (Mike Gilmer, N2MG); Date: Wed, 02 Oct 2002 14:33:30 -0300; The return loss improvement caused by cable attenuation will be twice the one-way cable loss, in this example: 4.9dB. That's enough to make an "infinite" SWR (at the load/antenna) look like 3.5:1 (in; /archives//html/Towertalk/2002-10/msg00076.html (7,173 bytes)
4. [Towertalk] 40 meter yagi matching (score: 1): Author: stevek@jmr.com (Steve Katz); Date: Wed, 2 Oct 2002 12:00:23 -0700; Yep, you're right, Mike! I realized right after I hit the "send" key that the return loss improvement is 2x the cable loss... And a 6dB return loss improvement will take a 3:1 VSWR right down to clos; /archives//html/Towertalk/2002-10/msg00083.html (8,602 bytes)

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