Actions

HF Modes Currently Inactive

From The RadioReference Wiki

Many of these modes haven't been used in years. Unfortunately when you buy a decoder like Hoka or Wavecom, you are paying not only for the modes that are active, but for the mostly out-of-date mode decoding as well. Rarely, some of these modes will come to life from time to time, probably to test a circuit, or to supplant a faulty satellite link.


Some of the waterfalls come from the DX Asia site (see the HF Appendix) and are used here for research and historical purposes.


This list can be used to eliminate possible modes used by a mystery signal, enabling one to move onto more productive possibilities.

Mode Name Synonym Notes Waterfall Page
ARQ-E ARQ-1000D
ARQ-E3 ARQ E3 Waterfall
ARQ-M2 ARQ-28 Also see ARQ-M2-342 HF Asia Waterfall
TDM
TDM-2
TDM-242
TDM-342
ARQ-M4 ARQ-56 Also see ARQ-M4-342
TDM-4
TDM-242
TDM-342
ARQ-N
ARQ6-70
ARQ6-90
ARQ6-98
ARS-GUARD SAUD-NAT
AUTOSPEC AUTOSPEC MK 1
AUTOSPECBAUER
BAUER
Australian Forces Continuous MIL-STD-188-110A Serial Tone Aus MILSTD188110A Serial Waterfall
Chinese Forces MIL-STD-188-110B 39 Tone Modem Variant Chinese 39 Tone Waterfall
CLOVER Q-CLOVER
QUAD-CLOVER
CLOVER-2000 X-CLOVER
8 TONE CLOVER
CLOVER-2500 Clover 2500 Waterfall
G-TOR Rare use by Braz Navy
Codan 9001/3021 16 Tone Modems CODAN 16 TONE MODEM CODAN 16 Tone Waterfall
Australian Selcall
COQUELET COQ-8 HF Asia Waterfall
COQ-12
COQUELET 8 V 2
DUP-ARQ 125-ARTRAC HF Asia Waterfall
ARTRAC
DUP-ARQ-2 ARTRAC-II
DUP-FEC-2
FEC-A FEC-100 HF Asia Waterfall
French Navy 50bd/850 Secure FSK Moved to STANAG modes French Navy 50Bd Waterfall
Globe Wireless HF Modes Org used several proprietary modes
HC-ARQ
HFD+VL OFDM MODEM HFD+VL Waterfall
HNG-FEC
ICAO ANNEX 10 SELCALL ICAO SELCALL
IRA-ARQ BULG-ASCII
Iranian Navy QPSK via I5-56578 Digital Blog Iranian QPSK Waterfall
Israeli Navy Hybrid FSK & 2400bd PSK Modem Israeli Navy Waterfall
Italian Coast Guard 100bd FSK Selcall Italian CG Waterfall
Japanese Navy 18 Tone Modem Jap Navy 18Tone Waterfall
Japanese Navy PSK Modem Jap Navy PSK Waterfall
MIL-STD-188-110B Parallel 16 Tone Modem 16 TONE MODEM 16 Tone Waterfall
MIL-STD-188-110B Parallel 39 Tone Modem 39 TONE MODEM 39 Tone Waterfall
MIL-STD-188-110B Serial Tone Modem MIL-STD-188-110A MIL 188110B Waterfall
MIL-STD-188-110A/B
PACTOR-I FEC via I5-56578 Antonio Digital blog PACTOR1 FEC Waterfall
PACTOR-II FEC via I5-56578 Antonio Digital blog
PICCOLO HF Asia Waterfall
POL-ARQ
RAC-ARQ MEROD Not really a synonym - see article
RACAL-ARQ
Racal MSM1250 SkyFax MSM1250 Waterfall
Racal PANTHER-H FHSS ALE PantherH Waterfall
RFSM8000 via I5-56578 Antonio Digital blog
ROU-FEC RUM-FEC HF Asia Waterfall
SI-ARQ ARQ-S
ARQ-1000S
SI-FEC FEC-S
FEC 1000 SIMPLEX
FEC-1000S
SkyOFDM via I5-56578 Antonio Digital blog
SPREAD AUTOSPEC MK II
SPREAD-11
SPREAD-21
SPREAD-51
SWED-ARQ ARQ-SWE
TT2300B TPLEX HF Asia Waterfall
TRA-2300
TT2300-ARQ
Tadiran HF2000 125bd FSK Modem Tadiran HF2000 Data Waterfall
Thales TRC1752 via I5-56578 Antonio Digital blog
TWINPLEX TWINPLEX-SITOR HF Asia Waterfall
F7B4
F7BNN


Bit and ACF Analysis


Notes

  • ACFs, Audio used for plotting and some waterfalls courtesy of Mike Chace-Ortiz, used with permission.