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Re: Radio modems
- To: ukha_d@xxxxxxx
- Subject: Re: Radio modems
- From: Nigel Orr <nigel.orr@xxxxxxx>
- Date: Mon, 15 Feb 1999 14:28:03 +0000
- Delivered-to: listsaver-egroups-ukha_d@xxxxxxx
- Mailing-list: contact ukha_d-owner@xxxxxxx
- Reply-to: ukha_d@xxxxxxx
At 12:04 15/02/99, you wrote:
>cables the entire distance is out of the question. I can find plenty
>of apparantly suitable radio modems (RS232 interface) on the web
>but they all seem to be in the USA.
Have a look at:
http://www.rfsolutions.co.uk
http://www.radiometrix.co.uk
http://www.lprs.co.uk
They all do UK equipment, prices seem reasonable. I think the addresses
are right, but my mental bookmark list could be corrupted ;-)
>Does anyone know which frequencies are legal in the UK so I can import
>a pair without fear of prosecution? Can anyone recommend any
>particular manufacturers?
Traditionally, it's been 173 and 418 MHz, but there are lots of recently
reallocated ones- the above websites will have the sort of info you need.
As a rough idea, ISTR 2 ends of RS-232 modem with a 1km range costing
=A3100
to =A3300 each end.
Nigel
--
Nigel Orr Research Associate O ______=09
Underwater Acoustics Group, o / o \_/(
Dept of Electrical and Electronic Engineering (_ < _ (
University of Newcastle Upon Tyne \______/ \(
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