Search & Rescue Incident - Ground & Air Radio Coms

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Re: Search & Rescue Incident - Ground & Air Radio Coms

Postby m0lsx » Tue Sep 22, 2015 10:21 pm

The distance you are able to hear a mountain rescue unit from is going to vary very dramatically.
On VHF the topography (or if you prefer the terrain) between receiver & transmitter make a massive difference. If the path between you & them is clear sky, then the distance could be many tens of miles, even on FM. But if they are low & for example a few buildings are in the way, a few hundred yards is possibly too much.
Even driving up a slope towards a transmitter site can lead to a loss of signal. I know one location where a long gentle slope has a signal from a distant repeater across it all except for the last half a mile. And there, you are in the shadow of the top of the slope & on that last & highest section, you just loose contact as a result.
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Re: Search & Rescue Incident - Ground & Air Radio Coms

Postby Radioshane » Mon Sep 28, 2015 2:32 pm

thanks molsx and I don't thin'k I could pick them up near me as I think the nearest mountain rescue team is north Yorkshire moors and as vhf is line of sight even with aerial on chimney that would be about 30 miles past pickering so couldn't do it I think you would have to be close to one of the national parks
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Re: Search & Rescue Incident - Ground & Air Radio Coms

Postby Radioshane » Mon Sep 28, 2015 2:39 pm

molsx i'm thinking of staying in some digs to watch the joint warrior exercises in October in helensburgh I know there is a mrt base near hawick
what's the furthest away do you think you could pick them up?
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Re: Search & Rescue Incident - Ground & Air Radio Coms

Postby Altomar718 » Wed Dec 09, 2015 9:13 am

If you have shortwave, the SAR frequency is 5680Mhz - This used to be the control in Kinloss, Scotland and RAF Chivenor in North Devon which has recently closed. It has been taken over by Bristow
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