These double CD sets contain examples of various radiocommunication systems recorded by a professional monitoring service in Europe. Four compact discs cover a total of 5 hours and allow rapid access to the typical sounds of all conventional and exotic shortwave transmission modes. Connect your audio CD player or multi-media PC to state-of-the-art decoding hard- and software and practice tuning these modes. Synchronization is perfect due to the digital recording technique!

Set 1: 71 different examples on two CDs cover speech, Morse, digital data transmission, fax, and teleprinter systems such as ACARS, ALIS, Arabic, ARQ-E, ARQ-E3, ARQ-M, ARQ-N, ARQ6, ASCII, ATU-Arabic, AUTOSPEC, bit inversion, CIS, Cyrillic and third-shift Cyrillic, DUP-ARQ, FEC-A, GOLAY, HC-ARQ, HNG-FEC, IRA, ITA2, MCVFT, MFSK, NATO Link, Packet Radio, PACTOR, Piccolo, POCSAG, POL-ARQ, QAM, RUM-FEC, SI-ARQ, SI-FEC, SITOR, SPREAD, SWED-ARQ and TWINPLEX. The various recordings are listed separately.

Set 2: 123 new recordings on another two CDs. Covers ACARS-HF, ALF, ALIS-2, ARS-GUARD, ASCII-BUL, ASCII-Slovak, ATIS, AWACS-NATO, BR-6028, CALSEL, CIS-73, CIS-81, CIS 96, CIS-100, CIS-192, Clover-Marine, Clover-2, COQUELET-13, COQUELET-80, DataTAC 6000, DATATRAK, DGPS-GB, DGPS-I, DGPS-NL, DTMF, DUP-FEC-2, EATS, EFR, ERMES, FAF, FAX COLOR240, FAX FAF, FAX HAM-COLOUR, Feldhell, Fleet-Broadcast, FMS-BOS, G-TOR, GAF-FEC, GN-FEC, HARRIS RF-5710, Hell-45, Hell-Siemens GL72, HF-Datalink, HYPERFIX, ITU-Beacon, Joint STARS, KFF-58, LORAN-C, Manchester, MODACOM, MOI-I, MPTI 1327/1343, NATO Tone-Call, NMT450, NMT900, Packet Radio, PACTOR-1-2, PACTOR-1-4, PACTOR-1-6, PACTOR-2, Pager, Portugal-VFT, PSK31, RAC-ARQ, RADAR ATC/Interrogator/Transponder, Ripple Control, SELCAL systems: CCIR-1/CCIR-7/CCITT/CDCS/CODAN/EEA/EIA/EURO/FAF/GMDSS-DSC/ICAO/VDEW/ZVEI-1/ZVEI-2/ZVEI-VDEW; SSTV systems: MARTIN-1/ROB72C/SC.DX/SCOTT-1; T-PLEX, TMS-430, TRACK-BACK, TT2300, TWINPLEX, voice-encryption systems: ADPCM/CVSD/MicroPCM/RELP/Scrambler/Splitter/Vocoder; and much more.