VHF Strangeness

[LeytonC]

Heard the solent costguard ask people not to do radio checks on saturday, this is not strange in itself, but i had just locked through upper lode lock on the severn
which is in Tewkesbury, just north of gloucester! I only heard the 1 message frrom them, so i think i was in the right place at the right time!

Has anyone else have VHF funnies in this hot weather?



<hr width=100% size=1>Thanks

Leyton
(EXTAR Solutions - Software that works for you)

 

[oldgit]

Great fun for some of us.Before going out on boat on Sunday switched on my VHf amateur radio and was listening to a chap in Paris,also loads of dutch stations around.Mind you CH5 tv picture was totally useless.

<hr width=100% size=1>Two boats please one here n one in the Med

 

[LeytonC]

<snip> CH5 tv picture was totally useless. </snip>

How is that different to normal?

LOL



<hr width=100% size=1>Thanks

Leyton
(EXTAR Solutions - Software that works for you)

 

[boatone]

Not at all unusual to get freak reception in the sort of weather we've been having recently. All down to skip distances....bit like skimming stones across the water.


<hr width=100% size=1><A target="_blank" HREF=http://www.boatsontheweb.com/> Website, Photo Gallery, Chat Room, Burgees</A>

 

[stuartw]

Sporadic \'E\'

Yes this is normal under intense sun conditions. It is called sporadic 'E' , and is a result of highly ionised pockets of gas in the troposphere which will act like lenses to incoming VHF radiation. The amount of skyward radiation from say Solent costguard,s antenna is quite high, such that it meets one of these ionised & sporadic pockets, and is refracted downwards, thus you can hear it in the Severn area. Sometimes these effects lasts for minutes or even hours.
They have the same effect on UHF TV signals, but it is more marked because of phase changes as it is refracted.

This effect, pre satellite comms, was used to communiate on VHF around the world, but used immense amounts of power to ionise the upper atmosphere. It was called troposcopic scatter.
Hope all this helsp to explain.

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[ccscott49]

Re: Sporadic \'E\'

Talking about "E" theyve started using ecstasy in yorkshire, by injecting it in there mouths, this procedure is called........................................Ee by gum!

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[LeytonC]

Re: Sporadic \'E\'

Thanks for the explanation!

But it was strange to hear solent costguard

<hr width=100% size=1>Thanks

Leyton
(EXTAR Solutions - Software that works for you)

 

[brianrunyard]

Yes, I'm in Poole and on Sunday even my Handheld was receiving Brixham CG, Foey and Swansea CG as though they were next door.

<hr width=100% size=1>Brian
http://homepage.ntlworld.com/brunyard

 

[Matthewb]

So that explains why I spent much of Saturday listening to Brixham CG - and I was in Chichester!

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