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Vhf antenna adapter

Old 08-31-2017, 08:38 PM
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Default Vhf antenna adapter

Just got Shakespeare 5225 Tx antenna and standard horizon gx1700. Antenna said it came with pl 259 connection. All I see is this end of cable in pic below


There are no threads. What do I need???? Trying to fish this weekend and hoping somewhere local has what I need. Thanks
Old 08-31-2017, 08:55 PM
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You are missing the barrel, go to West Marine and try to find one or just cut it off and install a whole new one.
Old 08-31-2017, 09:14 PM
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That's annoying. Can I get the barrel on it without cutting cable? Thanks man.
Old 08-31-2017, 09:21 PM
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That's just a normal old AM/FM radio plug, there might be an adapter that it plugs into maybe?
Old 08-31-2017, 09:38 PM
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Originally Posted by Jlh7600 View Post
Just got Shakespeare 5225 Tx antenna and standard horizon gx1700. Antenna said it came with pl 259 connection. All I see is this end of cable in pic below


There are no threads. What do I need???? Trying to fish this weekend and hoping somewhere local has what I need. Thanks
Take it back & get one with a PL259 that it's supposed to have according to the list for it on West Marine site.
Old 08-31-2017, 09:48 PM
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Yea I'm not happy. Problem is I got it online and need it installed to go offshore this weekend. Anyone know what the hell connection that is on there now and if west marine has an adapter??
Or should I just cut it off and see if west marine has a connection that can be attached instead?
Old 08-31-2017, 10:25 PM
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Are you sure that's an 5225XT antenna? Maybe someone put the wrong antenna in the tube?
Old 09-01-2017, 01:53 AM
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The connector shown is the type used on old car radios. The antenna is very likely not a VHF Marine Band antenna. It is probably an antenna for an AM or FM radio, based on the connector. Those connectors are never used for transmitting antennas.

Since you bought this antenna on-line, seek a remedy from your on-line seller.
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Old 09-01-2017, 06:12 AM
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Yep, you received a fm/am antenna instead of a vhf antenna. I believe that's a Shakespeare 5120 8' AM/FM Stereo Antenna. How much did you pay for it?
Old 09-01-2017, 09:54 AM
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It was about 110. And yes it's right part number but who knows what they sent. I'm at west marine getting ripped off on one right now but at least I'll have it this weekend.
Any good diy on the pl 259 install it comes with besides google?
Old 09-01-2017, 11:22 AM
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yoiutube... plenty of videos that will show you the best way to solder a pl259 to your antenna. I've done a few myself, it's a 15 minute job with a decent soldering iron and wire cutters. Good Luck!

https://www.youtube.com/results?search_query=pl259
Old 09-01-2017, 12:44 PM
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The plug in the photo is what's generally called a "Motorola plug"...used for decades on car radios. That's actually the only application where I've seen it used, so antenna you received is NOT a marine VHF antenna, won't even be resonant at those freqs., and cable won't even be rated for transmitting use. So, even if you found a Motorola/PL259 adapter, don't use it.

If you can use an AM/FM antenna for a stereo, maybe keep it, otherwise return it and get a proper marine VHF antenna. Trying to use what you received will cause very high SWR, and transmitter power fold-back, and perhaps radio damage.

I prefer Digital brand over Shakespeare, as they come with mini-PL259 connectors, and an adaptor...easier to snake through tight openings, often impossible with a standard PL259.
Old 09-01-2017, 04:12 PM
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10 4 appreciate all the help guys. They responded back saying they just sent the wrong one. No idea why it had and fm am connection on an 8' Shakespeare antenna but got one from west marine today that came with the pl 259. Guess solder only option for the pl 259? Saw vids and looks easy but don't have the iron or metal. Guess I'll be calling some buddies so I don't have to buy. Appreciate yalls time
Old 09-01-2017, 06:36 PM
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Should have bought a Digital brand antenna--they come with a small mini-uhf connector not much bigger than the cable end that can be fished through cable runs. Then you add the mini-uhf to PL259 adapter at the radio. easy peasy.

But yes, you should solder the PL259. Learning how to solder is a good skill to have. It's very easy once you learn.
Old 09-01-2017, 07:42 PM
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Yea I've heard the digital great but my budget is tight so old trusty will have to do. Went with a good radio though.
Thanks for heads up. Headed to lowes/Home Depot tomorrow to buy iron and wire. About to research but is there a certain wire required for marine vhf solder? Thanks
Old 09-01-2017, 08:18 PM
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Electronics solder. NOT plumbing slider.

BIG difference.
Old 09-01-2017, 10:02 PM
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Solder must be rosin-core, preferably eutectic 63/37% alloy...your first attempts are likely to be complete failures...you need a high-wattage soldering gun/iron, to get the shield soldering done quickly, before you melt dielectric from long heat-exposure.

Actually, try to find a local who has done hundreds of these. Most hams will do for free...I do.
Leave enough slack in cable for multiple attempts.
Old 09-02-2017, 12:17 AM
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Originally Posted by Jlh7600 View Post
Yea I've heard the digital great but my budget is tight so old trusty will have to do. Went with a good radio though.
Thanks for heads up. Headed to lowes/Home Depot tomorrow to buy iron and wire. About to research but is there a certain wire required for marine vhf solder? Thanks
Even the very best radio is rubbish with a rubbish antenna!
Old 09-02-2017, 03:14 AM
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Originally Posted by Jlh7600 View Post
10 4 appreciate all the help guys. They responded back saying they just sent the wrong one. No idea why it had and fm am connection on an 8' Shakespeare antenna but got one from west marine today that came with the pl 259. Guess solder only option for the pl 259? Saw vids and looks easy but don't have the iron or metal. Guess I'll be calling some buddies so I don't have to buy. Appreciate yalls time
Shakespeare make (or did) paired antennas, so one side of boat VHF and other the AM/FM antenna, so they looking aesthetically pleasing.

I´m afraid i´d have to disagree on the solder issue, I would strongly recommend the Amphenol crimp and solder connectors, the braided shield gets crimped and only the interior wire protected by the dilectric gets soldered, I have a friend who installs antennas and sat coms for a ling, they havent used solder connections for years. The downside to this is you will need a crimping tool for the PL250 connector, they come in more than one size depnding upong the width of the coax cable (RG8 and RG213 are thick, RG58 is fine), you might get some cheaper ones on ebay or Amazon, you can at a pinch use one of those flameless butane lighters to solder. There is a lovely photgraphed and detailed article on this on the pbase "compass how to" articles. Hope this helps.
Old 09-02-2017, 03:14 AM
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Originally Posted by noelm View Post
Even the very best radio is rubbish with a rubbish antenna!
Agreed 100%, add in to the mix, crap quality PL259 connectors and you have a recipie for fail!

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