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Old 14 July 2009, 08:23   #1
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Will this work with my IC-m421 please?

I have a whip type screw in antenna off my A frame that came with another boat, not sure what it was connected too - made by ap it suggests

obviously it'll need a new co ax type cable soldering on properly

a few pics of inside -

your thoughts anyone please?
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Old 14 July 2009, 08:38   #2
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Might actually be an old Decca aerial base which means it isn't a VHF aerial.

But someone more knowledgeable will probably contradict me

Orve.
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Old 14 July 2009, 08:41   #3
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cool, that'll save me wasting some time then if it is thanks for the heads up
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Old 14 July 2009, 09:02   #4
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Yes, old Decca aerial base.

Keith
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Old 14 July 2009, 09:10   #5
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VHF Aerial

What I don't understand is why you would have a superb Icom VHF on which your life could depend and cut corners on the aerial.

Get the best you can, and not a Rib Raider!!!!

Metz are good, as are Glomax.
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Old 14 July 2009, 10:07   #6
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Thats why I was asking whether this would be suitable - Not knowing a great deal about VHF's generally myself - cutting corners is not what im about I was just wondering if I could utilize the aerial instead of binning it

thanks for your suggestions
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Old 28 July 2009, 17:05   #7
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What aerial?

Had a Vtronix rib-raider aerial until someone stole the mast last weekend.

Unfortunately the design has been changed and the mast is no longer removeable. We remove the mast when the cover goes over the A frame.

Is there a suitable aerial that does have a removeable mast that I could use?

Or does anyone know where I can get an "obsolete" replacement mast.

The other option is to use a stubby antenna mounted on the console. Anyone have any experience with these?
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Old 28 July 2009, 18:00   #8
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I have a stubby one on the side of the consol as an emergency aerial. Range boat to boat is v.poor-height of aerial. Ok to shore stations particularly as our local cg aerial is around 500ft up on Blackpool tower.
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Old 12 August 2009, 16:09   #9
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Quote:
Originally Posted by Searider View Post
Had a Vtronix rib-raider aerial until someone stole the mast last weekend.

Unfortunately the design has been changed and the mast is no longer removeable. We remove the mast when the cover goes over the A frame.

Is there a suitable aerial that does have a removeable mast that I could use?

Or does anyone know where I can get an "obsolete" replacement mast.

The other option is to use a stubby antenna mounted on the console. Anyone have any experience with these?
What about a Glomex antenna with a ratchet mount - you could fold the antenna either 180 degrees or flat (depending on where it's mounted) when trailering or when cover goes on. Or, get a ratchet mount for the new raider.

I would imagine that a stubby mounted on the console would not have the best reception when someone is standing in front or behind it. VHF waves don't bend so there will be a potential black spot. I also personally would not like to be standing that close to an antenna when transmitting at 25W! I know mobiles have stubbys but they also have 1/5 of the power, maybe that's just me! Would also have an interesting effect on your compass

Generally, the longer then antenna, the narrower the transmission beam so long whip antennas are not ideal for bouncy ribs but glomex 1m antenna has approx same quoted gain as raider so should have similar transmission pattern. I know a lot of people prefer the glomex over the raider but I can't comment on that (still on original raider - want to swap? ).
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Old 13 August 2009, 03:58   #10
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New style Raider - Mine encountered the top of the garage door about 6 times before I fitted a ratchet to it. Raider do an official adaptor to convert the metric mount to the 1"x14TPI standard, however you can be clever with a glomex mount. (http://rib.net/forum/showthread.php?t=23951) Even after the abuse it still sends / recieves as well as the day it was installed.

I also have a Glomex 1.25m whip (was cheaper to buy the ratchet for the Raider with the whip than a ratchet on it's own!?!), then when I later found a cheap ratchet I thought I might as well have a spare easily swapped antenna and fitted the whip. (now have patch plugs under the console). Have tried both of them around the Clyde and don't notice a difference.

I'll second Al40 with the console mount comments!
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