On 12 Apr, 13:45, Del C wrote:

In the UK there are only about 3 commonly available gliding frequencies,
and some gliding clubs are not that far apart. I could well imagine trying
to launch a glider on instructions that come from another club! Also winch
launching (and speed calls) would tie up a frequency that is often
required for other purposes.

No need to use an airband frequency for the job.

Land lines have been tried in the UK, but it has been reported that they
were chewed through by rats, rabbits, sheep and *other assorted critters.
even when buried in the ground. And yes I know that the Germans have to
use this system by the decree of the LBA. How do they avoid critter
damage?

As far as I know, my current club hasn't had any significant problems
with this. Mind you, I think the telephone cable may be proper
armoured stuff.

Ian