Boat: Alden 50, Sarasota, Florida | 08-03-2022, 09:28 | | Boat: Lancer 27PS | sail or main sail. You'll soon find out that the might not sail any better, but might be worst. 7m to 9m is a good length for working all bands. Not all frequencies are workable due to harmonics that the tuner might find difficult to level out. However, most bands are doable with a 7m to 9m antenna length. Remember that the point the antenna begins is at the output of the tuner, not where the connection is made at the antenna. The wire leading from the tuner to the "antenna" is also a very important part of the antenna overall. I see it will be difficult to accomplish what you want. Have you looked at the possibility of running the antenna amidships? The stern is too busy and the boom would interfere with an alternate backstay. Moving the the antenna aft would mean running the feed almost parallel to the . Good luck, and if you can try experimenting. | | | 08-03-2022, 10:03 | | Boat: Pearson 365 Sloop and 9' Fatty Knees. | will reveal some lengths that . In generally go slightly above height. Then the amount of wire left, I know the length can use from this link... | | | 11-03-2022, 10:25 | | Boat: Catalina 470 | with the style , as in picture, would I have to put the lower insulator above the top of vane or could I put it just above the wheel near turnbuckle. Im imagining the longer the better! Or is this electrically difficult? Dunno how Id run the cable with its stand-offs to suit this style of wind-vane Just curious. Thanks | 11-03-2022, 11:12 | | Boat: Beneteau 432, C&C Landfall 42, Roberts Offshore 38 | cable covered in a plastic sleeve. On the lower end, did much the same, but connected to a piece of pvc pipe I had attached to the stern pulpit..this done to keep the wire high enough so it didn't cause any issues Ran some GTO cable from tuner, up thru' the pvc pipe to just above the lower insulator. Worked like a charm. You want a minimum lenght of 23' for the wire...... I never had any issues sending or receiving, but there were occasionally times, when the direction my was aimed at in relation to the other station, would make a difference, but it was a simple matter to change course for the short period I'd be on the air. | | | 11-03-2022, 13:16 | | Boat: Looking for 30’ BCC | | | | 11-03-2022, 17:44 | | Boat: Beneteau 432, C&C Landfall 42, Roberts Offshore 38 | . Whenever he wanted to use his Ham/SSB , he'd use a to hoist a wire up to his main masthead. His tuner was located under the somewhere near the . He had some or other connection between the wire and tuner....presumably, some GTO cable. The wire/antenna was more or less located where the topping would be...ie, toward the end of the boom. The GTO connection was always there, requiring only to be connected to the wire. I never saw this in operation, but was told it worked just fine. It's not a permanent situation off course, but I can see this working most of the time. With some thinking it could be made into a permanent location. Interestingly enough, my first boat was a , my antenna was run from the transom to the top of the mizzen. Thinking to increase the wire/antenna lenght, I concocted a system to extend the wire/antenna to the main mast, much like a triatic stay, but thru' experimentation with other hams found that the inclined angle between main and mizzen was not conducive to extended range, so I took it down. I think, that all things considered, a simple end fed wire, works best on a sailboat. I had originally considered a typical insulated backstay from the main mast, but was concerned that the split backstay of my ketch ran mighty close to the shrouds of the mizzen....only inches away. My concern was that the tuner might misread the length of the main backstay due to the proximity of the mizzen stays. At the time, I was a of a local Ham club, and a lot of support and thinking went into my situation, but my simple end fed wire proved to a superb setup. | | | 11-03-2022, 17:48 | | Boat: Beneteau 432, C&C Landfall 42, Roberts Offshore 38 | from wire, so it was always up, needing only to be connected to the tuner. | | | 11-03-2022, 19:57 | | Boat: Lancer 27PS | SSB antenna if you ever lose your mast. | | | 12-03-2022, 06:32 | | Boat: Beneteau 432, C&C Landfall 42, Roberts Offshore 38 | on my boat, my knowledge of antenna's was a bit sketchy. So I had considered installing a manufactured whip, as they are relatively inexpensive....often seen on big sportfishermen , etc...but soon cooled to the idea of having a 23' whip on my transom, thank goodness, though I have come across some that have had this whip installed. | | | 12-03-2022, 06:50 | | Boat: Caliber 40 | | | | Thread Tools | | Rate This Thread | : | Posting Rules | post new threads post replies post attachments edit your posts is are code is are are are | Similar Threads | Thread | Thread Starter | Forum | Replies | Last Post | | Tudorsailor | Electrical: Batteries, Generators & Solar | 1 | 07-08-2020 14:01 | | Jd1 | Marine Electronics | 21 | 18-03-2015 08:26 | | Skabeeb | Monohull Sailboats | 10 | 25-11-2012 18:09 | | bastonjock | Marine Electronics | 8 | 04-04-2010 05:00 | | David_Old_Jersey | Navigation | 3 | 19-05-2009 17:44 | Privacy Guaranteed - your email is never shared with anyone, opt out any time. 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PS, 7/18: Rumor has it that Sail SSB expert Gordon West tested this antenna and found that it worked as well as an insulated backstay, even when fitted over the grounded stay of a steel boat. I've also seen reports that it many cases (depends on wire fittings) it is actually less expensive than the traditional insulator set up.
svHyLyte. 3491 posts · Joined 2008. #6 · May 16, 2012. Bill Trayfors, an experienced cruiser and knowledgeable radio technician active on several sailing forums taught me that an effective connection can be made by attaching a ring-connector to the end of the cable between your antenna tuner and the back-stay with an appropriate heat shrink ...
Sailboat - 48N x 89W. Feb 3, 2005. #5. SSB Antennas. The traditional guidelines for a Backstay Antenna are to have the bottom insulator 7' off the deck, and 3' down from the masthead. Insulated sections of backstays longer than 35' are not necessary, however a longer antenna may perform better. The RF output from the tuner can be as high as ...
This is a unit that press fits on the backstay wire. The cost of the new separate signal halyard wire antenna was less than $20. The total cost of the new backstay was about $400, including the signal halyard antenna. I separated the SSB antenna from the grounded backstay by leading the antenna wire through an extension on our radar post.
Our Backstay's Weak Link. New in 2019, the wire still looked fine, as did the swages. But two Sta-Lok insulators on the backstay—an assembly that enables that aft wire to be used as an antenna for single sideband radio—didn't. Surface crazing on the black nylon portion of the insulators, which were added in 2008, suggested ultraviolet degradation.
The proper cables are very important for any type of radio installation. The wire from the antenna tuner to the backstay is GTO-15 High Voltage Cable. The cable itself is part of the antenna so the tuner needs to be as close to the backstay as possible. Since our boat is on the smaller side, finding a mounting space was very difficult.
While vertical whip antennas and backstay antennas are both more-or-less vertical, I wouldn't call them equal in most cases. They're both -- effectively -- random-length end-fed radiators. ... W4GE, served as Waterway Net Control from his 25' boat, using a random wire antenna and radials inside his hull. He had a strong signal from Charleston, ...
The GAM/McKim split lead single side band antenna is a favorite amongst sail boaters because it eliminates the need for backstay insulators forever. The split lead antenna simply press fits onto your existing backstay wire with no special tools or equipment required. The GAM/McKim is secured at the base by a hard grade plastic T clamp and ...
Shortman said: There is an interesting note on SSB antennas in the current issue of Sail by Gordon West. BoatWorks Ask Sail p.87. References GAM/McKim antennas that don't need an insulated backstay, the use of a whip antenna, or running a GTO-15 cable inside a double braid sheath & hoisting up the mast when you need.
The GAM antenna housing is constructed of tough, ultraviolet-resistant, low-density polyethylene (LDPE) and is 1 5/16 by half-inch thick and fits backstays from quarter-inch and 7/16-inch in diameter. Overall, the GAM antenna is 34 feet long-so youll need a backstay that is at least that long to install it-and weighs 6 pounds.
Re: HF antenna cable to the backstay. If the backstay "is" the antenna, then you would use GTO-15 wire from the tuner to the backstay. The GTO-15 wire is insulated and looks like coax, but it is not. It is a single wire within the insulation. The connection would be made where the GTO-15 and the backstay meet.
Location: Sherbrooke, QC. Boat: Paceship P29 & Morgan OI 416. Posts: 34. Alternate backstay antenna. I'm planning an SSB installation on my 41" ketch next Spring and while mining the forum for ideas and advice, I was quite intrigued by this post advocating the use of a sloper antenna (top fed) for HF. Isolate the backstay right at the masthead ...
Locate the automatic tuner as close under deck as you can. Then, take a length of GTO-15 insulated wire and connect the tuner to your "alternate backstay". You do, of course, need an RF counterpoise or ground system, just as you do with any end-fed antenna system. Here's a pic showing the lower-end detail.
GAM/McKim HF-SSB Split Lead Antenna for Sailboats. $ 465.00. The GAM/McKim split lead single side band antenna is a favorite amongst sail boaters because it eliminates the need for backstay insulators forever. The split lead antenna simply press fits onto your existing backstay wire with no special tools or equipment required.
Standard advice for installing a HF Radio on board your boat involves two big steps: Cut the backstay near the stern and near the top of the mast and install insulators to make that isolated section your vertical antenna. Drill a hole in your hull and install a "ground shoe" (A dynaplate) to serve as the transmitter's ground.
The GAM/McKim split lead single side band antenna eliminates the need for backstay insulators forever. The split lead antenna simply press fits onto your existing backstay wire with no special tools or equipment required. The GAM/McKim is secured at the base by a hard grade plastic T clamp and requires a back stay length of at least 34 feet.
Ancor GTO 15 High Voltage Cable (Sold by the Spool) - 150102. Ideal as a coupler output to antennas, Ancor's GTO 15 High Voltage Cable provides marine grade, 14 gauge tinned copper lead-in wire for HAM and SSB antennas. Features: High voltage, premium tinned copper wire Great coupler output to antenna I. www.defender.com.
The split lead antenna simply press fits onto your existing backstay wire with no special tools or equipment required. The GAM/McKim is secured at the base by a hard grade plastic T clamp and requires a back stay length of at least 34 feet. Brief content visible, double tap to read full content.
No way. Trap dipoles, at best, perform about the same as non-trap resonant dipoles. Furthermore, inverted V antennas have a high angle of radiation which do not favor DX (long distance) propagation. I'll agree with you that the traditional backstay antenna isn't a great performer, being nothing more than an end-fed random-length sloper.
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Interestingly enough, my first boat was a ketch, my antenna was run from the transom to the top of the mizzen. Thinking to increase the wire/antenna lenght, I concocted a system to extend the wire/antenna to the main mast, much like a triatic stay, but thru' experimentation with other hams found that the inclined angle between main and mizzen ...
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