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Old 13 September 2015, 12:50   #11
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Originally Posted by PaulB2180 View Post
I understand that vertical height is the key but RIB specific whip aerials on A frames only seem to reach to about 2m or so above sea level.

I also understand the point that longer glassfibre aerials are likely to snap.

Anyone found a solution to getting more VHF range?
I had 2 x pacific glass fibre aerials on the back of my rib fixed to the sides of the a-frame - they were both 1.8m in length and over the 8 years I had the boat, neither snapped despite being out in any weather, getting lines tangled around them etc.. etc... When I bought them, the local dealer had just installed the same aerials on the local police rib and sold me nylon mounts rather than stainless mounts, which meant all the flex was at the base rather than in the aerial itself hence they lasted. They were very very good aerials for reception and transmission, much better than I ever found on the smaller rib raider aerials which don't seem to do much more than a few miles when you're up river.



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Old 13 September 2015, 13:11   #12
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Thanks. Helpful stuff (mostly!).
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Old 13 September 2015, 13:13   #13
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Thanks. Helpful stuff (mostly!).
:thumbup:
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Old 13 September 2015, 13:20   #14
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Best RIB VHF aerial for long range?

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Originally Posted by PaulB2180 View Post
Thanks. Helpful stuff (mostly!).

Paul I apologise wholeheartedly for my drift but I honestly don't have any issues with the RR. Hope you find what you are looking for to meet you're purpose. Cheers
J


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Old 13 September 2015, 13:34   #15
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Have you used your VHF in the last 10 years?

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Yes caught you as usual!! Suffice to say that's the kind of comment that has chased quite a few people away from this forum.


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I can see it really just was a bit of tongue in cheek humour!!
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Old 13 September 2015, 15:03   #16
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Quote:
Originally Posted by PaulB2180 View Post
I understand that vertical height is the key but RIB specific whip aerials on A frames only seem to reach to about 2m or so above sea level.

I also understand the point that longer glassfibre aerials are likely to snap.

Anyone found a solution to getting more VHF range?
I'd echo Poly's questions - are you just looking for a decent antenna or do you have specific distance/location requirements.

For general functionality - I can recommend Glomex 1.5m 3DB fiberglass antenna - I've not broken one or seen one broken - ever. I did see a forum member break the base on one... They give good service in use as well - the CG were complimenting me recently on my TX quality in a generally poor reception area.

As you say, height above water is important - but more if you're trying to contact another vessel with low antenna placement. The CG will not experience much difference. Beware fitting the longer fiberglass antennae - they may well be 6DB units and as such not overly suitable for RIB use as their radiation pattern is very flat, and the heel experienced in a RIB (and from sexy swept back fitting) will not give an even range.
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Old 13 September 2015, 15:05   #17
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I'd echo Poly's questions - are you just looking for a decent antenna or do you have specific distance/location requirements.

For general functionality - I can recommend Glomex 1.5m 3DB fiberglass antenna - I've not broken one or seen one broken - ever. I did see a forum member break the base on one... They give good service in use as well - the CG were complimenting me recently on my TX quality in a generally poor reception area.

As you say, height above water is important - but more if you're trying to contact another vessel with low antenna placement. The CG will not experience much difference. Beware fitting the longer fiberglass antennae - they may well be 6DB units and as such not overly suitable for RIB use as their radiation pattern is very flat, and the heel experienced in a RIB (and from sexy swept back fitting) will not give an even range.
I use a RIB Raider from AM/FM reception - it's fairly pants.
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Old 15 September 2015, 16:05   #18
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I have both stainless and grp 1m Pacific aerials on the rib for VHF and AIS. Both give good clear reception and neither show any signs of fatigue. Dependent on atmospheric conditions I can receive VHF transmissions from 60 miles away (south coast from Alderney) and also have no problem getting my traffic reports through to the CG when up to 35 miles out. Sometimes the limiting factor is not so much the aerial as the quality of cabling and connectors.
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Old 15 September 2015, 16:18   #19
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Thanks.
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Old 15 September 2015, 16:21   #20
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I'm down at La Rocque if you want to take a closer look. Pretty much middle of the harbour.
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