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What I used very effectively on a Pearson 365 ketch was two insulators that
effectively insualted the triatic stay. The type of insulators I used were
the old fashioned ones that were made of a ceramic that had two interlocking
holes in them. I had the wire threaded through the holes and then swaged.
Then I soldered a piece of 12 ga stranded wire to the triatic right at the
mizzen end, and ran this wire down to the top of the cockpit coaming, thru
the coaming down to an antenna tuner mounted in the lazarette just beneath
the coaming. This type of antenna was an L-shape, or maybe an inverted Vee.
From the tuner I ran coax to the ssb. This set up gave me strong signals
worldwide, and was very inexpensive to make.Rodd
Windseeker
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Rodd
The insulator type that you mention is designed for small antenna tower guy wires. They are used to break up the electrical length of the guy so that it doesn’t resonate at any frequencies the antennas are likely to be used on. Loads typically run a few hundred pounds on these. A backstay can see loads of about 10x what a tower guy wire will see. A triatic stay might see half the load of the backstay, but this is still what I would consider too high a load for a ceramic insulator. If properly installed, the wire loops run through each other. If the insulator fails, ceramic parts will fall on your deck and the triatic would become about 4 inches longer. This probably won’t result in the loss of your rig however.—
Rich Carter
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Rich:
These are exactly the type of insulators I used. These were not small
insulators though. They were 5 0r 6 inches long and about 3 or 4 inched in
diameter. Note the Backstay , or more correctly for our boats, the split
backstay, is not touched at all. The only load is on the triatic, and yes
the eyes of the two wires do go through one another, so if the insulator
failed, the triatic would still be in place. I have seent these insulators
used to hold up guy wires to telephone ploles and towers. I had absolutely
no issues with the strength. That being said, if I were insulating the
backstay itself, I would not use this type of insulator. It is really to be
used by someone wanting a less expensive alternative to the high priced
backstay insulators, and the antenna that results from using the cheaper
ceramic insulators does a fantastic job on all frequencies(provided, of
course, there is also a good ground counterpoise installed).Rodd
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