"Stan Barr" wrote in message
al...
On Sat, 22 May 2004 05:55:51 GMT, JOE wrote:
That is SO cool! I'm sure it's worth the starting price, but too rich
for
me. Amazing that they had SPARK in airplanes - what would have
been the receiver? Surely a coherer detector... but maybe not???

There may not have been a receiver, a lot of early aircraft wireless was
one-way, for reporting fall-of-shot for artillery etc.



BC14 crystal receiver.

Peter