gonad
Well-Known Member
happy christmas everybody.
one question:is it worldwide?
one question:is it worldwide?
navtex coverage
- Thread starter gonad
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D
Deleted member 478
Guest
no it's only coastal i.e. similar range to a VHF radio or line-of-sight from the coast.
<A target="_blank" HREF=http://www.stingo.co.uk>http://www.stingo.co.uk</A> - now showing at a computer near you
<A target="_blank" HREF=http://www.stingo.co.uk>http://www.stingo.co.uk</A> - now showing at a computer near you
NDG
Well-Known Member
Re: err..
.....its much more than line of sight/VHF range. I think you can normally expect about 300 - 400 miles range - I frequently pick up broadcasts from Split giving nav warnings for the Adriatic (useful on the E coast), to say nothing of Ostende which is 100 miles away.
I have heard of people picking up "bounced" transmissions in mid atlantic.
.....its much more than line of sight/VHF range. I think you can normally expect about 300 - 400 miles range - I frequently pick up broadcasts from Split giving nav warnings for the Adriatic (useful on the E coast), to say nothing of Ostende which is 100 miles away.
I have heard of people picking up "bounced" transmissions in mid atlantic.
milltech
Well-Known Member
It is intended to work within 400 miles of major ports although I think I'm correct in saying it's integration is not yet worldwide. It is possible by night to receive messages at over 1000 miles distance, but that's a freak of radio propagation rather than a specification of the system.
John
<A target="_blank" HREF=http://www.allgadgets.co.uk>http://www.allgadgets.co.uk</A>
John
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gonad
Well-Known Member
thanks all
petery
Well-Known Member
Inmarsat-C?
..but Inmarsat-C gives you similar kind of data over the whole world excluding the polar regions... the price is currently about £2k - but its coming down. Once you've bought the kit receiving Navtex-type data is free - and it doubles as an EPIRB over most of the world. You also get a 2 way e-mail facility if you pay.
..you can probably tell I've just been on a course that covered it - but I'm buying one.
..but Inmarsat-C gives you similar kind of data over the whole world excluding the polar regions... the price is currently about £2k - but its coming down. Once you've bought the kit receiving Navtex-type data is free - and it doubles as an EPIRB over most of the world. You also get a 2 way e-mail facility if you pay.
..you can probably tell I've just been on a course that covered it - but I'm buying one.
G
Guest
Guest
whilst vhf is for all practical purposes line of sight transmission, navtex is transmitted on frequencies which propagate much further. for example, whilst in spain i had no difficulty in receiving niton and the scandinavian stations. i did have some difficulty in receiving spanish ones!
the forecast you receive depends on the tranmitter it comes from ie you need to be able to receive the station which covers the area you are in. the range of the signal is perfectly adequate to do this though geography can intervene if, for example, you are in a spanish ria.
none of the navtex broadcasts i have seen give the weather in mid ocean. if you need this (after all you cant avoid the weather so why get the forecast) then the alternatives are either satellite which i know nothing about, or ham radio.
ham radio is relatively cheap (say £500 complete for second hand setup), the license is easy to get these days, and the use is free unlike satellite. it easily covers the oceans, and lets you use e mail. the maritime mobile nets will give you the forecast plus the reports of other boats in your region. indeed, you can use it to talk to other boats.
the forecast you receive depends on the tranmitter it comes from ie you need to be able to receive the station which covers the area you are in. the range of the signal is perfectly adequate to do this though geography can intervene if, for example, you are in a spanish ria.
none of the navtex broadcasts i have seen give the weather in mid ocean. if you need this (after all you cant avoid the weather so why get the forecast) then the alternatives are either satellite which i know nothing about, or ham radio.
ham radio is relatively cheap (say £500 complete for second hand setup), the license is easy to get these days, and the use is free unlike satellite. it easily covers the oceans, and lets you use e mail. the maritime mobile nets will give you the forecast plus the reports of other boats in your region. indeed, you can use it to talk to other boats.
quaelgeist2
Well-Known Member
It is pretty world wide, but not further than about 500nm off the coasts.
CHeck here:
http://www.globalserve.net/~hepburnw/dx/navtex.htm
http://www.iprimus.ca/~hepburnw/index.html
The usual problem of being swamped by rather useless messages from far away stations you can avoid by getting a GPS-controlled receiver (Furuno NX300 or ICS 4/6).
merry christmas
chris
CHeck here:
http://www.globalserve.net/~hepburnw/dx/navtex.htm
http://www.iprimus.ca/~hepburnw/index.html
The usual problem of being swamped by rather useless messages from far away stations you can avoid by getting a GPS-controlled receiver (Furuno NX300 or ICS 4/6).
merry christmas
chris
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