Patent ID: 8711732

Claim:
A method for interoperable communications, consisting essentially of: a) providing at least one computer having at least two sound paths; b) configuring said at least two sound paths with at least one signal receiving interface per sound path, with each said signal receiving interface being tuned to receive a different frequency and wherein said signal may be any sound, radio or electromagnetic encoded signal; and c) at least two users' transmitting data via a sound, radio or electromagnetic encoded signal, from a site from which data is collected, to said at least one computer over at least two frequencies and into each of said sound paths and further wherein at least one user transmits or receives signal comprising digital tone data with forward error correction, wherein said digital tone data has encoded within each six bit modulation change a word or phrase instead of a character, using a microphone and over the air via a narrowband FM signal at a bandwidth of 3 KHz or less, and further wherein said method uses only radios and computers without reliance on pre-existing radio repeaters or any hard wired infrastructure and is effective to provide data transmission even under extremely adverse reception conditions.