«-- Letter Re: Coleman Fuel--Uses and Storage Life | Main | Note from JWR: --»
Moon Bounce Communications, by David in Israel
James
When you were working at Defense Electronics I'll bet you came across
a few old articles and references to the pre-communication satellite days and
how the military especially the navy handled this in a nuclear war scenario.
While EMP can
be handled by hardening and charge dumping circuits there is still the whole
problem with a totally disrupted natural ionospheric layers.
Under those conditions, it is predicted that long range HF radio
just wont work on most bands most of the time.
What started out as a way to listen to Soviet radio and radar transmissions
was utilized by the US Navy for a short time as a assured way to get intercontinental
communications as long as the moon is in the sky. Although it is usually expensive
to get started with Earth-Moon-Earth (EME or commonly called "Moon Bounce")
communications, I have found a
nice site that covers using a lower powered 2 meter (144 MHz) setup that
most of us could afford.
Here is a site about a hobbyist who watches for EME-bounced
TV stations in Australia with simple gear
Wikipedia
has a nice intro on the topic.
While communications ranks far lower than food supply, location, a simple defensive
battery, and sustainability it is nice to know that you could contact prepared
family, or even just listen for
signals from elsewhere on the planet even if a solar, nuclear, or other event
were to cut off HF and normal amateur radio or commercial satellite communications.
Kol Tov - David in Israel
