Thread: HF is Smokin
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Old May 3rd 12, 02:21 AM posted to rec.radio.amateur.antenna
Wayne Wayne is offline
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First recorded activity by RadioBanter: Jul 2006
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Default HF is Smokin



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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.