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End-feeding dipoles
Thanks for interesting comments by all.
My question was prompted by reports of alleged matching difficulties, rather than by questions of general utility, feasibility, or ancillary problems. For example, Lee's Vertical Antenna Handbook discusses various conventional matching circuits for vertical antennas. For the half-wave vertical, he comments tersely that "It is difficult to match well and should be avoided if possible". (page 25, 2d edition; context makes clear he is referring to end- or base-feeding) He shows the usual parallel tuned circuit with tapped inductor as the appropriate matching device. Although Lee doesn't logically link his assertion of matching difficulty with his admonition of avoidance, he conjoined them in the same sentence with abandon or intent. My interest is limited to the allegation of matching difficulty. BTW, I was assuming a half-wave, horizontal antenna, one end of which is brought directly into the shack with no intervening transmission line. Definitely not a dipole, but not a monopole either, I suspect. There are some reports out there of RF in the shack with this arrangement, but who has experienced matching problems? So if there were no common mode issues, the directly end-fed, half-wave wire would be an equal opportunity candidate along with the traditional dipole for the same radiator geometry? Or is that like saying if it weren't for gravity I could fly? 73, Chuck ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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