HF8V - RED ARMY RADIOTELEGRAPH SIMULATOR - HF8V =========================== NATO NAVAL FLEET BROADCASTS =========================== ======== OVERVIEW ======== Naval Broadcast played very important role in Naval Communication, since 2WW most Naval combat ships maintained strict radio silence, only possible way of one-side communication were broadcasts. Submarines often copied messages from VLF powerfull transmitters submerged on periscope depth, while surface fleet ships from HF CW Naval transmitters. This kind of traffic was succesively over taken by RATT broadcasts (this process started in 1950's and ended in early 1990's). NATO FLEETS: - USN - ROYAL NAVY - ROYAL CANADIAN NAVY - TURKISH NAVY - GREEK NAVY - PORTUGUESE NAVY - DANISH NAVY - DUTCH NAVY Currently 137 ships OPERATIONAL NOTES: Official Fleet Broadcast speed was 18-20 WPM [4] according USN standards. =========================== IMPLEMENTED NATO BROADCASTS =========================== ================================================================================================================== FREQ STN BCST COLL TIME REMARKS ================================================================================================================== 2581 PBC N13A NAWS 0400-0500 1800-1900 0000-0100 3156 PBC N13A NAWS 0300-0400 1700-1800 2300-0000 EVEN MONTH 3259 PBC N13A NAWS 0300-0400 1700-1800 2300-0000 ODD MONTH 3359 TBH3 T43B TBDJ 0000-0100 0800-0900 1600-1700 3685 SXA2 K13A NAWS 0000-0100 0500-0600 1000-1100 1500-1600 2000-2100 3685 SXA2 K13G SZAB 0700-0800 1300-1400 2200-2300 4230 PBC N13A NAWS 0100-0200 0500-0600 1900-2000 4255 CFH C13L CGNS 0000-0400 0800-1200 1600-2000 4260 TBA2 T13A NAWS 0000-0100 0400-0500 0800-0900 1200-1300 1600-1700 2000-2100 4268 CKN C13E CGNS 0100-0500 1100-1500 2000-0000 4275 TBA T13A NAWS 0000-0100 0400-0500 0800-0900 1200-1300 1600-1700 2000-2100 4301 GYC B13A GBXZ 0000-0200 0600-0800 1200-1400 1800-2000 4547 TBA T13A NAWS 0000-0100 0400-0500 0800-0900 1200-1300 1600-1700 2000-2100 4610 SXH3 K13C SZAB 0800-0900 1400-1500 1800-1900 5035 CTV P13A NAWS 0200-0300 0900-1000 1700-1800 EVEN MONTH 5080 CTV P13A NAWS 0200-0300 0900-1000 1700-1800 ODD MONTH 5097 CFH C13L CGNS 0000-0400 0800-1200 1600-2000 5162 PBC N13A NAWS 0100-0200 0500-0600 1100-1200 1900-2000 6331 CTH P13C CTAA 0300-0400 1600-1700 2300-0000 6385 SXA4 K13A NAWS 0000-0100 0500-0600 1000-1100 1500-1600 2000-2100 6385 SXA4 K13G SZAB 0700-0800 1300-1400 2200-2300 6414 GYC B13A GBXZ 0000-0200 0600-0800 1200-1400 1800-2000 6430 CFH C13L CGNS 0000-0400 0800-1200 1600-2000 6456 CKN C13E CGNS 0100-0500 1100-1500 2000-0000 6895 PBC N13A NAWS 0000-0100 0600-0700 1200-1300 1800-1900 8010 PBC N13A NAWS 0000-0100 0600-0700 1200-1300 1800-1900 8091 TBA T13A NAWS 0000-0100 0400-0500 0800-0900 1200-1300 1600-1700 2000-2100 8463 CKN C13E CGNS 0100-0500 1100-1500 2000-0000 8614 GYC B13A GBXZ 0000-0200 0600-0800 1200-1400 1800-2000 8640 CTV P13A NAWS 0000-0100 0700-0800 1400-1500 8671 SXA8 K13A NAWS 0000-0100 0500-0600 1000-1100 1500-1600 2000-2100 8671 SXA8 K13G SZAB 0700-0800 1300-1400 2200-2300 8697 CFH C13L CGNS 0000-0400 0800-1200 1600-2000 10276 PBC N13A NAWS 0000-0100 0600-0700 1200-1300 1800-1900 10944 CFH C13L CGNS 0000-0400 0800-1200 1600-2000 11136 PBC N13A NAWS 0000-0100 0600-0700 1200-1300 1800-1900 EVEN MONTH 11500 PBC N13A NAWS 0000-0100 0600-0700 1200-1300 1800-1900 ODD MONTH 12125 CKN C13E CGNS 0100-0500 1100-1500 2000-0000 12703 CTV P13A NAWS 0000-0100 0700-0800 1400-1500 12726 CFH C13L CGNS 0000-0400 0800-1200 1600-2000 12753 CKN C13E NAWS 0500-0900 1500-1900 0000-0200 12808 GYC B13A GBXZ 0000-0200 0600-0800 1200-1400 1800-2000 12994 CTH P13C CTAA 0300-0400 1600-1700 2300-0000 16030 PBC N13A NAWS 0600-0700 1200-1300 1800-1900 16435 OVG D23A OVAA 0000-0100 0500-0600 1000-1100 1500-1600 2000-2100 EVEN MONTH 16926 CFH C13L CGNS 0000-0400 0800-1200 1600-2000 16960 CKN C13E CGNS 0100-0500 1100-1500 2000-0000 17031 GYC B13A GBXZ 0000-0200 0600-0800 1200-1400 1800-2000 19970 PBC N13A NAWS 0500-0600 1300-1400 20714 CTV P13A NAWS 0700-0800 1400-1500 20757 CTV P13A NAWS 0700-0800 1400-1500 21846 CTV P13A NAWS 0700-0800 1400-1500 22609 CFH C13L CGNS 0000-0400 0800-1200 1600-2000 22856 CTV P13A NAWS 0700-0800 1400-1500 23060 CTV P13A NAWS 0700-0800 1400-1500 23117 CTV P13A NAWS 0700-0800 1400-1500 ODD MONTH 23198 CTV P13A NAWS 0700-0800 1400-1500 EVEN MONTH 25550 CTV P13A NAWS 0700-0800 1400-1500 CTH P13C CTAA 0300-0400 1600-1700 2300-0000 OVG D23A OVAA 0000-0100 0500-0600 1000-1100 1500-1600 2000-2100 ================================================================================================================== =========== SIMULATION: =========== Coderess message NATO format is simulated with defined static (fixed) callsigns. Broadcast callsigns are 'closed' fixed type, all of them can be found in CALLSIGNS file with reference to given ship and its 'open' (ITU) callsign. These callsigns are used for broadcasts only and never in ship to shore communication. Simulation of tentative frequencies are made by even/odd month of transmission. Unfotunately transmission times are not original (still looking for data). But in fact transmision times has been subject to change in various periods. When no Fleet Broadcast is present station is iddling, sending its VVV tape, sometimes WX, NX or PX broadcasts, rarely can communicate with ships (ships to shore network is usually separate network). Various national fleets has is own Fleet Broadcasts standards too (not covered here). BROADCAST INDICATORS ==================== NATO Broadcast Indicators are used on marker tapes. It consists with 4 elements in LFFL format: L Nation or controlling authority F Broadcast type F Emission type L Broadcast ID 1 element - Nation or controlling authority A = Australia N = Netherlands B = Commonwealth O = not allocated C = Canada P = Portugal D = Denmark Q = Belgium E = Spain R = not allocated F = France S = South Africa G = Germany T = Turkey H = USA U = USA I = Italy V = not allocated J = Argentina W = not allocated K = Greece X = NAT L = Luxembourg Y = Norway M = ASEAN Z = New Zealand 2 element - Broadcast type 1 - Area bcst (eg. Northern Atlantic, Indian Ocean etc.) 2 - Sub Area bcst (eg. Baltic Sea, The Channel etc.) 3 - Submarine bcst 4 - Special bcst, activated on special request (exercises etc.) 3 element - Emission type 1 - Encrypted RTTY bcst, different encryption systems 2 - Clear RTTY bcst 3 - Morse bcst 4 - FAX ? 4 element - Broadcast ID When a nation uses more than one bcst station the 4th (sometimes also 5th) element are used to indicate the specific broadcast channel. Sometimes, when a country has only one station, the last letter is omitted. In case of NATO broadcast (1st letter = 'X'), the last letter(s) always indicates the location. COLLECTIVE CALLSIGNS EXAMPLES: 9GTA ALL GHANIAN WAR SHIPS CGMP ALL STATIONS OF THE MOUNTED POLICE CGNS ALL CANADIAN WAR SHIPS CTAA ALL PORTUGUESE WAR SHIPS EBBB ALL SPANISH WAR SHIPS FAAA ALL FRENCH WAR SHIPS FAAG ALL FRENCH WAR SHIPS IN THE PACIFIC FAAN ? FCMP ALL U.S. WAR SHIPS IN THE E.PACIFIC GBXZ ALL BRITISH WAR SHIPS GCMP ALL U.S. WAR SHIPS IN THE W.PACIFIC GCMP2 ALL U.S. WAR SHIPS IN THE W.PACIFIC IAAD ALL ITALIAN WAR SHIPS IAAM ALL COAST STATIONS OF THE ITALIAN NAVY IAAX ALL ITALIAN WAR & MERCHANT SHIPS LBBA ALL NORWEGIAN WAR SHIPS LCMP2 ALL U.S. WAR SHIPS IN THE ATLANTIC LCMP3 ALL U.S. WAR SHIPS IN THE ATLANTIC NCG ALL COAST STATIONS OF THE US COAST GUARD NCU ALL CUTTERS OF THE U.S. COAST GUARD NAWS ALL NATO WAR SHIPS NERK ALL U.S. WAR SHIPS NIDK ALL SHIPS OF THE U.S.C.G. ICE PATROL NQO ALL COAST STATIONS OF THE US NAVY OVA ALL COAST STATIONS OF THE DANISH NAVY OVAA ALL DANISH WAR SHIPS PASM ALL DUTCH SUBMARINES PCAA ALL DUTCH WAR & MERCHANT SHIPS PCAB ALL DUTCH WAR SHIPS PCAC ALL DUTCH WAR SHIPS SZAB ALL GREEK WAR SHIPS ================ TRAFFIC EXAMPLES ================ Some theory from [1][3] CQ TAPE EXAMPLE: ================ NAWS NAWS NAWS DE CFH CFH CFH C13L C13L C13L (12 spaces) This format has 3 things: 1/ COLLECTIVE callsign 2/ INDIVIDUAL station callsign 3/ BROADCAST DESIGNATOR 1/ COLLECTIVE callsign NAWS collective callsign is used when broadcast is for all NATO fleets. Otherwise other national collectives are used. 2/ INDIVIDUAL station callsign CFH - HALIFAX NAVY. ITU callsigns are used. 3/ BROADCAST DESIGNATOR =============================================================================================== C - country code, originator of broadcast C - Canada 1 - broadcast type 1 - area (oceans), 2 - subarea(small seas, etc) 3 - emission type 3 - A1A A - broadcast ID A - broadcast identifier within given Navy =============================================================================================== MESSAGE FORMATS: ================ Two types of message formats are defined: plaindress MSG - adresses in the clear codedress MSG - adresses encrypted in MSG TXT (No FM, TO, INFO part) Plaindress MSG Format: NAWS NAWS NAWS DE CFH CFH CFH C13L C13L C13L (calling tape once at start only) L NR432 L NR432 (bdcst designator, msg nr) ii (separator) P P (precedence) ii (separator) 091234Z MAR 091234Z MAR (DTG,month) ii (separator) FM FM YJZD (originator address) TO TO HDZR (destinator action address) INFO EWBK (destinator info address) GR15 GR15 (group count) = (break) [5LG TXT] (coded msg) = (break) C (optionally) + (end of message) (1 seconnd wait) (...next msg) Codedress MSG Format: NAWS NAWS NAWS DE CFH CFH CFH C13L C13L C13L (calling tape once at start only) L NR433 L NR433 (bdcst designator, msg nr) ii (separator) DAMP DAMP (receiver callsign) ii (separator) R R (precedence) ii (separator) 091234Z MAR 091234Z MAR (DTG, month) ii (separator) GR75 GR75 (group count) = (break) [5LG TXT] (coded msg) = (break) C (optionally) (service commands) + (end of message) (1 seconnd wait) (...next msg) BROADCAST ENDING: NAWS NAWS NAWS DE CFH CFH CFH QRU + In practise there was small differences from this standard in various NATO countries. PRECEDENCE CODES: R - Routine P - Priority O - Immediate Z - Flash PLAN: ===== 1/ decodable messages KNOWN BUGS: =========== - DTG still the same in all msgs LOOKING FOR: ============ 1/ K13Y SPATTA ATTKIS (lookking for info) 2/ Lack of proper information which OVG freqs were used for broadcasts, some definetely were used only in ship-to-shore network. SOURCES: ======== [1] ACP126 [2] various SWL logs [3] http://www.navy-radio.com/manuals [4] Radioman 3 & 2, NAVPERS 10228-B, 1957, rm32-10228B-1957.pdf