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VHF help !!! need antenna to be removable

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VHF help !!! need antenna to be removable

Old 12-01-2017, 07:00 AM
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Default VHF help !!! need antenna to be removable

alright so ive got a 22ft bay boat and my fishing consists of a lot of inshore but also a fair amount of time is spent 10-25 miles off shore. i run a handheld right now and just i bought a Standard Horizon 1700 that i still have to install. the problem is i would like the antenna to be removable since i spend a lot of time fishing inshore. I really don't want an 8 ft antenna sticking up in the way if im fishing a couple hundred yards from shore and have my phone, and a hand held radio. i really just want the mounted vhf for when i run offshore. so my question is, is it possible to cut the wire at the base of the antenna and put a plug that connects the two pieces and leave the end that goes to the radio available so i can plub and un plug my antenna and unscrew it when im not using it? or does any one have any better options. to the best of my knowledge the antenna wire is like coax so i don't see why i couldn't cut it and spice a connector on either end. thanks!
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Old 12-01-2017, 07:09 AM
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Buy a Baylyn vht antenna, the mast screws off without disturbing the rest of the connection.
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Old 12-01-2017, 07:26 AM
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I have two Shakespeare 6225-R 8' Phase III VHF Antenna that are super easy to remove. If they make that same antenna in a length that suits you that will work well.
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Old 12-01-2017, 07:27 AM
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Originally Posted by Reel 007 View Post
Buy a Baylyn vht antenna, the mast screws off without disturbing the rest of the connection.

thats exactly what im looking for! they arent sold on any of the sites that say are dealers and their website doesnt have a phone number atleast not one that i can find.
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Old 12-01-2017, 07:32 AM
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Originally Posted by Miss Trial View Post
I have two Shakespeare 6225-R 8' Phase III VHF Antenna that are super easy to remove. If they make that same antenna in a length that suits you that will work well.

how does that antenna mount, no wires coming off the antenna? how does it connect to the cord that goes to the radio? thanks their website ins't of much help and their customer service hasn't called me back for over a week
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Old 12-01-2017, 07:52 AM
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Originally Posted by Snowsnow354 View Post
thats exactly what im looking for! they arent sold on any of the sites that say are dealers and their website doesnt have a phone number atleast not one that i can find.
try this # 804-615-3965 for Baylyn.
Good Luck.
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Old 12-01-2017, 07:54 AM
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the phase III are nice but pricey. Shakespeare makes a Quickconnect series that is more entry level. screws right off the base.
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Old 12-01-2017, 08:14 AM
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First off you only need a 4 foot antenna, no real value or performance increase with an 8ft antenna as VHF is line of sight , that has been discussed on this forum many times, do some reading.

Confused why can't you simply use a VHF ratchet mount like the rest of us and just lay the VHF antenna down when not far off shore, it will still work and no need to remove the antenna.

Jim
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Old 12-01-2017, 09:10 AM
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Originally Posted by jfwireless View Post
First off you only need a 4 foot antenna, no real value or performance increase with an 8ft antenna as VHF is line of sight , that has been discussed on this forum many times, do some reading.

Confused why can't you simply use a VHF ratchet mount like the rest of us and just lay the VHF antenna down when not far off shore, it will still work and no need to remove the antenna.

Jim
The higher the antenna the greater the line of sight, be patience with me, its 22' bay boat I am assuming without a hard top, if he ratchet mount the antenna anywhere he lays it down when not in use it will be in the way.
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Old 12-01-2017, 12:18 PM
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Originally Posted by Reel 007 View Post
The higher the antenna the greater the line of sight, be patience with me, its 22' bay boat I am assuming without a hard top, if he ratchet mount the antenna anywhere he lays it down when not in use it will be in the way.
If indeed no hardtop, that might explain the need, but a 4 foot can fit somewhere out of the way I would think.

The difference between a 4 ft. versus 8 ft. antenna center line for line of sight is not significant at all.

Jim
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Old 12-01-2017, 12:22 PM
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Originally Posted by Reel 007 View Post
The higher the antenna the greater the line of sight, be patience with me, its 22' bay boat I am assuming without a hard top, if he ratchet mount the antenna anywhere he lays it down when not in use it will be in the way.
This exactly it. You hit it on the money. I don't have a t top, you're only going to get about 3db out of a 4ft unless you go high end. 4 foot won't render very useful very far when it's mounted near the transom of the boat. Hardly above sea level. After reading a bunch I've decided I'd like an 8 foot that puts out about 6db. And you hit it on the money again I could lay it over wth a ratchet mount but who wants an 8 foot antenna in the way on the deck if they aren't using it. Thanks for your help reel 007
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Old 12-01-2017, 02:08 PM
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Life Safety, and as fast as shit happens I want my fixed VHF radio to be my primary whether I am 100 yards or 100 miles. It is on and scanning all day long. I have had batteries crap out on my hand held, or it could end up overboard.

Baylyn seems like a good idea and option, weird that you can't find them anywhere. Good luck.

Last edited by gundog61; 12-01-2017 at 02:23 PM.
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Old 12-01-2017, 02:12 PM
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[QUOTE=Snowsnow354;10889237]This exactly it. You hit it on the money. I don't have a t top, you're only going to get about 3db out of a 4ft unless you go high end. 4 foot won't render very useful very far when it's mounted near the transom of the boat. Hardly above sea level. After reading a bunch I've decided I'd like an 8 foot that puts out about 6db. And you hit it on the money again I could lay it over wth a ratchet mount but who wants an 8 foot antenna in the way on the deck if they aren't using it. Thanks for your help reel 007[/QUOTE


Well do what you will, but the center line of an 8 foot antenna is 4 feet above the base, the center line of a 4 foot antenna is 2 foot above the base. That is also the center of radiation. So the boat is say 2 foot above the water, with 4 foot antenna has a center of radiation of 4 feet above the water, and the 8 foot antenna has a center of radiation of 6 feet above the water.

The line of sight is determined by the total height above ground of both sites, so say the coast guard antenna center of radiation is 300 feet, so with the 4 foot antenna you get 304 feet and with the 8 foot antenna you get 306 feet total above ground.

So the line of sight for both antennas is equal 27 miles, do the math yourself with this calculator

http://www.calculatoredge.com/electr...ineofsight.htm

VHF communication is line of sight, so the additional gain of the 8 foot antenna will not make any difference in the range at all.

So many folks have no idea how this really works, and they spend too much money on large antennas that do noting for them and may actually cause them issues.

The best way to increase the range of your VHF antenna is to significantly raise the antenna to a point that really makes a difference. Play with the calculator and see how it really works.

When you do raise it up high like on a sail boat mast than the 8 foot antenna will cause you all sorts of issues with the narrow vertical beam width in a rough sea. If you indeed have any idea what vertical beam width is and how an 8 foot antenna steals signal from one area to add it to another decreasing the vertical beam width of the antenna.

Jim
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Old 12-01-2017, 02:57 PM
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Originally Posted by jfwireless View Post
...The best way to increase the range of your VHF antenna is to significantly raise the antenna to a point that really makes a difference. Play with the calculator and see how it really works...
You don't need a calculator to learn how raising antenna height affects signal strength. The relationship is very simple: if you double the antenna height the signal gets FOUR TIMES stronger.

This is shown repeatedly in formal studies. See

VHF Radio Propagation Over Water
http://continuouswave.com/whaler/ref...OverWater.html
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Old 12-01-2017, 06:16 PM
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The simple answer is yes you can cut in a connector. I had to replace my broken antenna with an old temp and cut the wire and out in a connector and Bam it works.
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Old 12-01-2017, 07:24 PM
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In your situation I'd put a 3' or 4' antenna on a rail mount on the grab rail of the CC. When down it's like it's not even there. And you never have to worry about carrying it on and off the boat.

https://www.bing.com/images/search?v...x=6&ajaxhist=0
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Old 12-01-2017, 07:37 PM
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Shakespeare make what I be live you need/want

https://www.westmarine.com/buy/shake...74?recordNum=6
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Last edited by prowlersfish; 12-01-2017 at 07:42 PM.
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Old 12-01-2017, 07:55 PM
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I have the same radio and similar boat setup, here is what I did...works great!

Mount one of these using a ratchet mount on the console grab rail. Fold down when not on the water, when up it's not much taller then a 7'6" rod- https://www.hodgesmarine.com/DIGITAL.../dig528-vw.htm

Then I keep this in the console an put on when headed further out and want the extra range for safety- https://www.hodgesmarine.com/DIGITAL.../dig528-ew.htm
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Old 12-01-2017, 08:45 PM
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I think what I'm going to end up goin with is either the Shakespeare quick connect or a baylyn, both amtennas are able to completely remove when not in use which is what I was looking for, help was much appreciated
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Old 12-02-2017, 06:03 AM
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Originally Posted by jhebert View Post
You don't need a calculator to learn how raising antenna height affects signal strength. The relationship is very simple: if you double the antenna height the signal gets FOUR TIMES stronger.

This is shown repeatedly in formal studies. See

VHF Radio Propagation Over Water
http://continuouswave.com/whaler/ref...OverWater.html


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unless you are doing space vehicle calculations. Once above the ground effects, you are looking at a simple distance sq. based equation. Yes, I've done weather satellite receivers on boats.
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