Chuck wrote in
:

On Thu, 11 Jun 2009 08:42:32 -0500, Geoff Schultz
wrote:

I'm posting this for a friend from the forum on www.FreedomYachts.org.
I know that there are a lot of good radio people here and not many on
that forum.

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I have one of these catketches, no shrouds and an overhanging mizzen
boom. In the next two years, I need to install an SSB transceiver
antenna. I have two stainless adjustable backstays with block and
tackle at the bottom. Normally, in their idle mode, they are athwart
ships of the mizzen. When in use, The luff backstay tackle is set on
the luff transom corner and tensioned. I know some people use this
backstay as an antenna.

What I want to know is if someone has experience with positioning the
balun at the TOP of the backstay and feeding the coax cable from the
top of the mast down to below decks. Normally, the balun is at the
bottom end of the antenna and the coax is fed in from there. This is
not possible (or at least practical) with a backstay that is moved
around at the bottom end. As far as my limited knowledge goes, the
coax has to be included in calculating the required antenna length.

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-- Geoff
www.GeoffSchultz.org

Hi Geoff,

What is the purpose of the balun in the installations you described?
Both the coax and the antenna are typically unbalanced and a balun is
not required. Is the device an unun to transform impedances?

Chuck

I'm not a radio person and am simply repeating the question. If you'd
like to ask directly, please go to

http://www.freedomyachts.org/viewtopic.php?f=7&t=10132

You'll have to register to reply, but that's quick.

-- Geoff
www.GeoffSchultz.org