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Old 04 August 2011, 17:09   #11
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squelch alters the wave form of VHF radio, too much will weaken/distort the wave signal, hence lower range.

I teach squelch on my radio courses.

S.
Thankyou for that, we are heading out tommorrow on the ribs so will try a test call with a lower squelch. Just looked squelch up and seen exactly what its use is. Really didnt cover this on the course, strange. Thanks for the info.
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Old 04 August 2011, 17:10   #12
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The CG get a lot of this, squelch up or volume down - all part of a days work.

One night earlier in the season I was listening to a grounded WAFI calling the CG for urgent assistance. They were asking him all sorts but no reply. They had a rough fix on him and launched the RNLI to locate and assist (that was seven men out of bed)

His volume was off (to stop that irritating chit chat)

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Old 04 August 2011, 17:16   #13
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The CG get a lot of this, squelch up or volume down - all part of a days work.

One night earlier in the season I was listening to a grounded WAFI calling the CG for urgent assistance. They were asking him all sorts but no reply. They had a rough fix on him and launched the RNLI to locate and assist (that was seven men out of bed)

His volume was off (to stop that irritating chit chat)

I bet they do....... Luckily whenever i have tried to call them for a test call i have always done it next to the other ribs i go out with so if they do reply at least one of us will hear them, just for that very reason. The last thing i would want is to cause a search.
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Old 04 August 2011, 17:19   #14
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I bet they do....... Luckily whenever i have tried to call them for a test call i have always done it next to the other ribs i go out with so if they do reply at least one of us will hear them, just for that very reason. The last thing i would want is to cause a search.

Just read the "might have to adjust the squelch each time you turn it on" comment in the manual. . why o why did this not get covered. Oh well, good old rib net.

So should i still get a fixed set them? Channel Ribs, i know what your reply will be
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Old 04 August 2011, 17:25   #15
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I would buy a PLB Fastfind 210 instead, of fix VHF unless you going to Connect it up to GPS etc, so the DSC functions work fully.

or if your always in a group , buy petrol!

regards

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Old 04 August 2011, 17:29   #16
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Originally Posted by actions

Just read the "might have to adjust the squelch each time you turn it on" comment in the manual. . why o why did this not get covered. Oh well, good old rib net.

So should i still get a fixed set them? Channel Ribs, i know what your reply will be
you might need to adjust squelch during the day...up or down, I an habit of checking squelch before broadcasting if not used radio for a while....

I always get students to play with squelch on courses, to the point they start checking before transmitting...

regards

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Old 04 August 2011, 17:30   #17
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I would buy a PLB Fastfind 210 instead, of fix VHF unless you going to Connect it up to GPS etc, so the DSC functions work fully.

or if your always in a group , buy petrol!

regards

S.

I'm liking the petrol option.

Well, i shall try the radio tommorrow and see what happens. There's normally at least two ribs, sometimes 3. but come the winter its 9 times out of 10 me in a dry suit and millions of base layers...

I do have a GPS which does have other ports on the back of it. Oh choices choices.
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Old 04 August 2011, 17:46   #18
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Quote:
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squelch alters the wave form of VHF radio, too much will weaken/distort the wave signal, hence lower range.

I teach squelch on my radio courses.

S.
I don't think that's quite right. A squelch circuit in an FM receiver sets a threshold that a signal needs to exceed in order to unmute the audio. The reason why weak transmissions break up when the squelch is 'on' is that they will occasionally drop below the signal threshold and so become temporarily inaudible.
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Old 04 August 2011, 17:57   #19
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I would buy a PLB Fastfind 210 instead, of fix VHF unless you going to Connect it up to GPS etc, so the DSC functions work fully.

or if your always in a group , buy petrol!

regards

S.
That's insane advice, surely? If the guy's 15 miles out to sea, a hand-held tx is unlikely to raise the CG; only a 25w fixed set with a decent antenna will guarantee communication at that range. An EPIRB is fine as an additional safety measure but a reliable radio is more important in my book; you can't talk to the CG or other vessels and update them of your situation with a PLB.
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Old 04 August 2011, 18:12   #20
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an Ariel mount at 1metre will contact a shorebased station at 15 nautical miles.

Fixing a VHF is an option, but my comment is if he is always in group...you have safety in numbers...

A PLB is good if the when all goes wrong, a DSC Fix VHF radio is worth it weight in gold if GPS is fitted to it - Press the Red Button.

We communicate with 5 watt, radios from ranges along the coast greater than 15 miles to Forth Coastguard.

Power Does not govern the range of a VHF signal but is the height of Ariel.

I carry a handheld, a Fixed Radio and PLB on my 5.5 metre RIB, but i have A Frame.

Regards

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