Check out my web site at http://www.caving.btinternet.co.uk
There is a little about cave radio beacons for radio location and depth
finding.
Also there is a brief explanation of a positioning system I have called SNAP
which is short for
Speliogical Navigation And Positioning, and a brief report on 73Khz SSTV
from underground.
Regards
Fred Rattray
G4SPR
----- Original Message -----
From: "Dr. Tom Gruis" <[email protected]>
To: <[email protected]>
Sent: 09 July 2001 21:22
Subject: LF: Cave Radio
Helllo from Iowa, USA.
I seem to recall an earlier thread about Cave Radio on this reflector.
I made note of this URL: http://www.bcra.org.uk/sig/creg.html
Are there any more out there?
73,
Doc.
| 