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"Cecil Moore" wrote in message ... H. Adam Stevens, NQ5H wrote: I prefer resonant antennas and transmission lines that match them. I prefer non-resonant antennas and transmission lines that resonant them. :-) It's "resonate", Cecil, and the antenna still won't be resonant. You just can't beat a resonant antenna for radiation. Maybe not, but you can equal them. A tuned transmission line resonates the antenna system. When you get a lossless line. And the antenna still isn't resonant. Tuners squander AT BEST 1 or 2 db. That's why I don't use a conventional tuner. So build your antenna resonant, match it, and don't bother with a tuner. Or build your antenna non-resonant and match it with a series section transformer. If impedance transformation is necessary, use a transformer; IF impedance transformation is necessary, use a transmission line as the transformer. :-) Not the least lossy approach. Matched impedance = max power transfer. -- 73, Cecil, http://www.qsl.net/w5dxp 73 H. |
#2
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H. Adam Stevens, NQ5H wrote:
"Cecil Moore" wrote: Maybe not, but you can equal them. A tuned transmission line resonates the antenna system. When you get a lossless line. And the antenna still isn't resonant. So what? If you move off the resonant frequency, your antenna still isn't resonant. I'd rather have a resonant antenna system on many frequencies and many bands than an antenna system resonant on only one frequency. IF impedance transformation is necessary, use a transmission line as the transformer. :-) Not the least lossy approach. Matched impedance = max power transfer. Depends upon how much money you want to sink into your coax. Open-wire line with an SWR of 10:1 will beat RG-213 in the loss department on 80m. It takes 9913 to equal the performance of open-wire line with an SWR of 10:1 on 80m and 9913 costs about three times as much as open-wire line. And with open-wire line, one can enjoy all eight HF bands immediately, and not have to spend two days cutting and trying a fan dipole. -- 73, Cecil, W5DXP -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
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