Underground Radio

Discuss caving lights, packs, helmets, clothing, etc.
For rope and vertical equipment, go to the On Rope! forum.
Cave electronics enthusiasts can also visit the Communications and Electronics Section forum.

Moderator: Moderators

Underground Radio

Postby ohiocaver » Dec 3, 2014 8:30 pm

Does anyone have experience with the Ferra underground radio? I understand cavers and miners in Europe have toyed with it. It is supposed to work up to 1200 meters underground in data mode (less in voice mode), and up to 3km in a shaft or tunnel. It's 1810 to 2000 kHz. Would be very handy for cave rescue or spread-out expedition work. Weighs just under 5 lbs (2kg).
[url=http://postimg.org/image/lex35gcbv/][img]http://s9.postimg.org/lex35gcbv/curt_Bryants_Cave_Indiana.jpg[/img][/url]
[url=http://postimg.org/image/eta4ctvar/][img]http://s21.postimg.org/eta4ctvar/cn_oh_isl_coils_cave_curt_sketch.jpg[/img][/url]
User avatar
ohiocaver
NSS Hall Of Fame Poster
 
Posts: 286
Joined: Mar 5, 2009 6:34 pm
Location: Ohio
Name: curt harler
NSS #: 22735RCL
Primary Grotto Affiliation: Cleveland Grotto
  

Re: Underground Radio

Postby caver.adam » Dec 4, 2014 12:29 am

Not sure. This website http://www.xferra.com/products/ indicates that it actually goes from 300khz to 3,000khz though and the default is in the range you mentioned.

But yikes, 2000 euros is a lot of cash. Guess that's why so many ham operators do it themselves.
User avatar
caver.adam
NSS Hall Of Fame Poster
 
Posts: 344
Joined: Feb 8, 2012 12:26 pm
Primary Grotto Affiliation: Louisville Grotto
  

Re: Underground Radio

Postby Leclused » Dec 9, 2014 6:11 am

Some info about the cave radio a member of my club build in the '90 can be found here

http://www.scavalon.be/avalonuk/technical/radio1.htm
User avatar
Leclused
Prolific Poster
 
Posts: 167
Joined: Oct 4, 2007 9:02 am
  

Re: Underground Radio

Postby twomillionbucks » Jan 28, 2015 10:20 am

Hmm. This looks good, but as others have said... very expensive.

Does anyone know of something like this, but cheaper? Or am I stuck trying to build my own?
twomillionbucks
New Poster
 
Posts: 1
Joined: Jan 28, 2015 10:18 am
  


Return to Equipment Forum

Who is online

Users browsing this forum: No registered users