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Other Dive Equipment: Discuss Diver Locater: Lets make one in the Dive Kit and Equipment forums: Been following this thread, as I think the idea is a sound one. Unfortunately don't feel I'd be ...

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  #71 (permalink)  
Old 19-02-06, 07:51 PM
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resting rifleman resting rifleman is offline
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Quote:
Originally Posted by Ding Dang Doo
Been following this thread, as I think the idea is a sound one. Unfortunately don't feel I'd be able to contribute much towards discussion.

But FF, you can't say this without some sort of clarification, can you???
word on the grapevine is................
......., homing herrings!
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  #72 (permalink)  
Old 19-02-06, 09:52 PM
Sheff diver Sheff diver is offline
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Having just scanned through this thread by chance (and a few others this evening), I have reached a couple or three conclusions:

1. Alan has watched too much Withnail

2. Duncan is sick (hands up if you didn't know this already)

3. If someone came up with an idea that worked underground, the CRO and a few underwater potholers would be very, very happy.

Marcus
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  #73 (permalink)  
Old 20-02-06, 09:42 AM
Kalahari Diver Kalahari Diver is offline
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There are a number of devices used by skiers in case they are caught in an avalanche. The names "Recco" and "Ortovox" spring to mind. If someone was serious perhaps these people might be willing to look at it.
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  #74 (permalink)  
Old 20-02-06, 10:02 AM
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Quote:
Originally Posted by Kalahari Diver
There are a number of devices used by skiers in case they are caught in an avalanche. The names "Recco" and "Ortovox" spring to mind. If someone was serious perhaps these people might be willing to look at it.
Unfortunately the Recco device works by transmitting a radio pulse and the object in the clothes responding, direction is deduced by moving the transmitter/receiver until the strongest signal is received. As has already been said, normal mmW radio signals do not travel very far underwater, and even less through caves!

Ortovox I think is just a radio transmitter, with DF being achieved by moving the receiver to get the strongest signal.
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  #75 (permalink)  
Old 20-02-06, 10:19 AM
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Quote:
Originally Posted by Sheff diver
3. If someone came up with an idea that worked underground, the CRO and a few underwater potholers would be very, very happy.

Marcus
There is a cave radio see http://bcra.org.uk/creg/heyphone/index.html
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  #76 (permalink)  
Old 20-02-06, 11:43 AM
Sheff diver Sheff diver is offline
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Quote:
Originally Posted by peter lamb
Yes, and they are excellent in the right hands and right conditions, but not quite the underwater tool we are looking for.....

Marcus
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  #77 (permalink)  
Old 20-02-06, 11:48 AM
Alan Alan is offline
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I had a good lead on this from soneone who contacted me, a YDr. Just waiting for them to get back to me about there Dive Locater (If someone has a good idea, but wants to hold of on a patent then just post a description).

A chap pm'd me about something they have built which solves all the issues we discussed, allows for monitoring divers, and can be reversed so diver can find the boat. Has a water proof screen, sonar tail just thrown over the side. Might need some modifications for market but it sounds good anyway. Sounds doable at least.
Last edited by Alan : 20-02-06 at 11:51 AM.
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  #78 (permalink)  
Old 20-02-06, 11:56 AM
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more than happy to help with the sea trials alan! good work.
mike.
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  #79 (permalink)  
Old 20-02-06, 11:58 AM
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Quote:
Originally Posted by resting rifleman
more than happy to help with the sea trials alan! good work.
mike.
You will definitely be the first, in fact it was our conversation awhile back on skype which kicked everything off. Have a green!!!!!!
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