Radio alarm system

Claim 1

An alarm system for identifying the existence of an alarm condition at a remote site proximate to earth's surface, comprising: (a) radio transmitter means at said remote site adapted to transmit a high frequency coded signal at a frequency licensed by the FCC for alarm purposes or a low power coded signal at a frequency made available by the FCC for alarm purposes without license, said signal identifying the existence of said alarm condition; (b) radio receiver means at a second site adapted to receive said signal; (c) electrical power means effective only to energize said radio transmitter means for a short duration; (d) antenna means connected to said transmitter means having an antenna length effective for said transmission; (e) housing means housing said transmitter means, power means and antenna means; (f) actuatable rocket or charge propulsion means at said remote site adapted to propel said housing means from a position proximate to earth's surface to a peak elevation effective for line-of-sight licensed alarm or low powered non-licensed radio transmission to said second site, said short duration of transmission being defined as a period less than that during which said housing means is airborne; and (g) means at said remote site proximate to earth's surface responsive to an alarm condition to activate said propulsion means.