Most of the sound effects, the ship, the interociter, etc . are simply recordings of radio teletype transmissions picked up on a short wave radio played at various speeds.
2.
MHRC conducts expeditions and field days to promote Public service communications and Legacy communication modes like Morse code and Radio teletype ( RTTY ) radioteletype and also new communication modes like digital packet, Automatic Position Reporting System ( APRS ) Automatic Packet Reporting System, and spread spectrum.
3.
This radiotelegraph message format ( also " radio teletype message format ", " teletypewriter message format ", and " radiotelephone message format " ) and transmission procedures have been documented in numerous military standards, going back to at least World War II-era U . S . Army manuals.
4.
The " British Amateur Radio Teletype Group ", BARTG, now known as the " British Amateur Radio Teledata Group " was formed in June 1959 . The Florida RTTY Society was formed in September 1959 . Amateur Radio operators outside of Canada and the United States began to acquire surplus teleprinter and receive permission to get on the air.
This radiotelegraph message format ( also " radio teletype message format ", " teletypewriter message format ", and " radiotelephone message format " ) and transmission procedures have been documented in numerous military standards, including the World War II-era U . S . Army Manuals TM 11-454 ( The Radio Operator ), FM 24-5 ( Basic Field Manual, Signal Communication ), FM 24-6 ( Radio Operator's Manual ), TM 1-460 ( Radiotelephone Procedure ), FM 24-18 ( Radio Communication ), FM-24-19 ( Radio Operator's Handbook ), FM 101-5-2 ( U . S . Army Report and Message Formats ), TM 11-380, FM 11-490-7 ( Military Affiliate Radio System ), AR 105-75, Navy Department Communication Instructions 1929, and their modern decedents in the Allied Communications Procedures, including ACP 124 ( messages relayed by telegraphy ), ACP 125 ( messages relayed by voice ), ACP 126 ( messages relayed by radio teletype ), ACP 127 ( messages relayed by automated tape ), AR 25-6, U . S . Navy Signalman training courses and others.
7.
This radiotelegraph message format ( also " radio teletype message format ", " teletypewriter message format ", and " radiotelephone message format " ) and transmission procedures have been documented in numerous military standards, including the World War II-era U . S . Army Manuals TM 11-454 ( The Radio Operator ), FM 24-5 ( Basic Field Manual, Signal Communication ), FM 24-6 ( Radio Operator's Manual ), TM 1-460 ( Radiotelephone Procedure ), FM 24-18 ( Radio Communication ), FM-24-19 ( Radio Operator's Handbook ), FM 101-5-2 ( U . S . Army Report and Message Formats ), TM 11-380, FM 11-490-7 ( Military Affiliate Radio System ), AR 105-75, Navy Department Communication Instructions 1929, and their modern decedents in the Allied Communications Procedures, including ACP 124 ( messages relayed by telegraphy ), ACP 125 ( messages relayed by voice ), ACP 126 ( messages relayed by radio teletype ), ACP 127 ( messages relayed by automated tape ), AR 25-6, U . S . Navy Signalman training courses and others.
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