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From: Peter Ogilvie (no email)
Date: Mon Mar 20 2006 - 00:21:33 EST
Use Norseman or StaLok insulated terminals, not swages. The mechanical terminals will outlast the wire many times over and don't have the crevice corrosion problems of swages. They are also way easy to do yourself. No need to have some stranger mucking about on your boat and you'll do a better job in any case.
As far as a backstay being a good antenna. With 100 watts out, we talked with people from Texas to Western Australia using the backstay as an antenna for our Ham radio. Super signal and no problems with RF burns, etc. The lower insulator was about 7' up and the upper about 3' down the backstay. In a crowded anchorage, we occasionally got other boats masthead anchor lights to glow but no other outward signs that we were transmitting. If you get a good SWR match with your antenna tuner, you'll get a super signal out.
FWIW, heard that it's best not to have the insulated length of stay at the 1/2 wave length of the primary frequency you'll be using. 20 meters is the primary long distance Ham band, believe it's 21 meters on the commercial side. That equates out to a length of about 33'. Try and make it longer or shorter. Someone with a better knowledge of antennas might be able to back up and explain this hearsay.
Aloha
Peter O.
Philip Lange <> wrote:
John,
I believe the insulator is swaged onto the backstay about three to five
feet from the end terminal.
There are insulators that use a Norseman type fitting too.
http://www.obmc.com/norseman%20swageless%20insulators.htm for an example.
Staylock probably makes them also.
I expect they can be done in situ.
Philip
At 02:01 PM 3/19/2006, you wrote:
>Would appreciate advice on installing insulator in my backstay.
>
>I have installed a SSB radio in my Jeanneau SO37 and must put an
>insulator in the backstay. My backstay has a "stem ball" swaged end
>at the top. This necessitates pushing the wire up through the stem
>ball gate to remove, and pulling all back through the small opening
>to reinstall.
>
>Problem: I cannot simply have an insulator swaged to the stay...it
>will not fit back through the gate.
>
>If you have ideas on this, I would really appreciate some help!!
>
>Thanks,
>
>John McBroom
>
>S.V. Romance
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