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Old 17 October 2011, 18:38   #31
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dunno how I typed that

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Originally Posted by Rogue Wave View Post
The longer antenna disapfrom the handheld transmitter ates some of te limited power from thehandheld transmitter it's worth a try but no substitute for the power of a fixed unit..

Nasher can pull start his 250 BTW
should read The longer antena disapates some of the limited power available from the Handheld transmitter. It's worth a try but no substitute for the power of a Fixed unit
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Old 17 October 2011, 20:01   #32
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Once I got caught in the middle of nowhere on Lake Huron with an engine that wouldn't start. After 3 hours of drifting and trying numerous fixes I finally had to call pan pan on my handheld Apelco VXL 501. Sarnia Coast Guard picked me up about 70 miles away, and relayed messages between me and my rescuers who were about 2 miles away around a point. The six foot seas likely affected my antenna height.
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Old 18 October 2011, 06:58   #33
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Quote:
Originally Posted by Northern Pike
Once I got caught in the middle of nowhere on Lake Huron with an engine that wouldn't start. After 3 hours of drifting and trying numerous fixes I finally had to call pan pan on my handheld Apelco VXL 501. Sarnia Coast Guard picked me up about 70 miles away, and relayed messages between me and my rescuers who were about 2 miles away around a point. The six foot seas likely affected my antenna height.
Yea - it can get like that sometimes radio blind spots...

As side note : In UK at least if your engine breaks down don't wait 3 hrs trying to fix. Call the CG explain the situation and they might come to your aid, but at least you have alerted them of potential ...in Firth of Forth you will prob get a lifeboat coming out to help and tow in to safety... a easy rescue now is better rescue in storm or night...
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Old 18 October 2011, 09:26   #34
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OP ShinyShoe, reply by Festinghouse.
In reply to F, a receiver cannot "draw in'' a signal, as you correctly say. (We shall not enter into amplification at this stage. Esp as amplification cannot increase something that isn't apparent. But it can descramble refracted signals.)
However a transmitting HORIZON of 3 miles can be lowered (and this is the horizon being lowered not the range) by:
a. the transmitter elevating their position
b. the receiver elevating their position
Note that "horizon" is not range.
The net result is that "the fence the signals are going over is lowered (relatively) by raising the trans and rec respective points".
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Old 18 October 2011, 14:42   #35
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That was based on supposition at the time I think, because whats the chance on a Uk coastline of actually being within a mile of the CG mast?, but this site confirmed my suspicion:
http://www.ukseakayakguidebook.co.uk...es_and_map.pdf
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Old 18 October 2011, 19:51   #36
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Quote:
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In UK at least if your engine breaks down don't wait 3 hrs trying to fix. Call the CG explain the situation and they might come to your aid, but at least you have alerted them of potential
In this case it was the middle of a nice sunny day, except for the rising wind and resulting wave height, and I was drifting toward my destination.
Also, I got the engine to fire a couple of times with emergency rope pulls (electric start 40 HP), which gave me false hope.
Turns out I had 2 faults: a defective kill switch, and a dead (i.e. 1 shorted out cell) battery. Both worked OK when I set out that morning.
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Old 19 October 2011, 15:21   #37
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I have a fixed vhf & an Icom M71 in the grab bag. In the dim & distant past we found ourselves stuck out at sea with flat boat batteries, hence no VHF, never again. The M71 is a nice bit of kit
Nowt to do with radios,but 15 years ago i got a written warning for conduct at work relating to me stating that "you can't educate lard"(read pork) i thought is was funny at the time & even funnier now.
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Old 19 October 2011, 17:44   #38
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Nowt to do with radios,but 15 years ago i got a written warning for conduct at work relating to me stating that "you can't educate lard"(read pork) i thought is was funny at the time & even funnier now.
& still as true as ever, especially now that common sense has been replaced by 'elf n safety
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