Posted by Ian E-N on March 21, 2003 at 08:52:19 from 148.88.0.11 user IanEN.
In Reply to: Re: A study in horns and whistles posted by Mike Field on March 20, 2003 at 22:32:56:
would be enough for your circumstances
for shorter distances we use owl calls - needs a bit of practice but once you've worked out how ( hands sealing properly, angle of blowing etc. ) surprisingly audible/distinguishable/locatable as a get back here right now message.
I
can see Dick beeing interested in
Motorola Talkabout radios
have a compressor you can get a refillable one and do just that to it when you need to
there's one that one can buy from cycle shops that you can pump up with a bike tyre pump.