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#19
May 3rd 12, 02:21 AM
posted to rec.radio.amateur.antenna
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HF is Smokin
wrote in message ... Wayne wrote: wrote in message ... wrote: On 1 May, wrote: # I was refering to the case where there is nothing to adjust the match and # getting something under 3:1 at the end of the feed line. # # Given an ATU, you can usually match anything and there is no need for the # physical complexity of a fan dipole. An open wire fed dipole would give pretty good performance. But, feeding such an antenna with RG-8 and living with a high VSWR (maybe up to 10:1) shouldn't be discarded. A dipole of about 18 feet would cover 24 and 28 MHz with about 5:1 VSWR....not bad. # My transmitter gives up at about 5:1. # Your milage (and transmitter) may vary. Yes. My Yaesu ATU gives up at 5:1, so I have been using a more robust homebrew tuner. A VSWR of up to say 10:1 (perhaps 15:1) shouldn't be a deal killer, if you can match the coax and are willing to accept 2-3 dB of loss. This opens up a lot of antenna possibilities that might be otherwise discarded. |
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