Sound files
Here you can listen to the sound of different signals recorded on amateur HF bands.
PSK Systems — Serial and Parallel Modems — Frequency Division Multiplex (FDM) — OFDM — VFTs
- Arcotel MAHRS/EADS — serial modem 2k4 Bd — PSK8
- Codan 9001 — 16 x 75 Bd QPSK — MFA Cairo on 14056.5 kHz
- Chinese MIL — 18-tone FDM, 18 x 44.44 Bd, QPSK
- Chinese PRC- FSK4 (4 x 100 Bd)
- PRC4+4, Chinese MIL, Idling: 8 x 75 Bd, QPSK
- PRC4+4, Chinese MIL, Traffic: 8 x 75Bd, QPSK
- PRC16 — 16 x 75 Bd PSK2 — Chinese MIL
- RUS-MIL — CIS12 — 12 x 120 Bd BPSK — “AT3004D”
- RUS-MIL — MPSK16 (+1) FDM — 16 x 75 Bd BPSK
- Stanag 4285 — PSK8
- MIL188-110A — PSK8 — 600 bps
- MIL188-110A — QPSK — Hybrid Modem ISR Navy
- MIL188-110B — PSK8A — 2400 Bd ‑Burst Modem
- Link11 CLEW — MIL — System
- Link11 SLEW — serial modem 2k4 — PSK8 — MIL System
- Siemens CHP200
- Clover 2000 8 x 62.5 Bd — BPSK/QPSK
- Italian MIL VFT Brescia on 29699 kHz — permanent
- OFDM 60 Tones, RUS MIL
- OFDM 72 tones
- OFDM 128 Tones
- OFDM 112 Tones, burst mode
- OFDM 73 Tones, burst mode
- RFSM2000 ‑serial modem — 2000 Bd — PSK8
- RACAL Panther H, Frequency Hopper
FSK Systems — Frequency Shift Keying (F1B / F7B)
- Codan selcall
- ARQ-E3
- F1B bursts — 51 Bd — POR
- ALE (MIL188-141A)
- CIS printer 75 Bd — BW = 250 Hz
- CIS printer 81 – 81 — 81 Bd. BW = 250 Hz
- F1B — 100 Bd, 1000 Hz shift, REA4 Moscow, RUS AF
- RUS Yakhta synchro FSK 100 Bd, BW = 150 Hz
- UK System CLANSMAN 300 Bd, BW = 850 Hz
- North Korean DPRK-FSK600 — 600 Bd. BW = 600 Hz
- North Korean DPRK-FSK1200 — 1200 Bd. BW = 600 Hz
- CHN Dataplex from Global Link
- Racal Skyfax MSM 1250 — 10 x 125 Bd
- FSK ESP
- GPS buoy on 28100 kHz — FSK 51 Bd, bursts
- Datawell buoy on 29525 kHz — FSK 81.9 Bd
- REA4 — AF Moscow — ident in CW
Multitone Systems (F7D)
Radar Systems (FMCW and FMOP)
*sps = sweeps per second
- CHN Coastal radar “Sunflower” on 7 MHz — 43 sps
- CHN OTH radar (burst) — 66.66 sps — foghorn
- CHN OTH radar BW = 160 kHz ‑10 sps
- CYP OTH radar — 50 sps
- CYP OTH radar — 25 sps
- CYP OTH radar — 12.5 sps
- TUR OTH radar — 50 sps
- Radar on 80m in Region 3
- OTH-Radar made by DK2OM
- Old RUS OTH radar ABM‑2
- OTH radar RUS, 10 sps
- RUS OTH radar Contayner 50 sps
- RUS OTH radar Contayner 40 sps
- Old IRN OTH radar on 14000 and 21000
- Later Iran OTH radar on 14000 and 21000
- Iran radar on 28000 — 29700
- Iran radar on 28000 on AM
- Iran radar on 28960 on AM — 150 and 313 sps
- French OTH radar “Nostradamus” on 14.000 MHz ‑33 sps
- French OTH radar on 14000.0 MHz, bursts — 6 sps
- AUS Tiger HF radar on 10 MHz
- Superdarn Ionospheric radar
- Codar ocean wave radar — short range — 2 sps
- Codar — like HF radar — Far East 2.6 sps
- New HF radar — USA
- Ocean Surface radar
- AUS OTH radar (JORN)
- IND CODAR — 14075 — 14125 kHz — 2 sps
- RUS coastal radar “Sunflower” 3540 — 3600 kHz — 43 sps
- Russian OTH radar on 3600 kHz — 87 sps
Beacons and Buoys — Channelmarker
- Fishery buoy — 28191 kHz — CW ident: AH
- Fishery buoy — 28356 kHz — CW ident: Y
- Fishery buoy — 28091 kHz — CW ident: MA
- GAB 28345 Gabon — carrier + dots on LSB/USB
- Single Letter Beacons 7039 kHz
- KGZ beacon “V” on A1A (CW) 7027.5 kHz
- L9CC and CP17 on 7052 kHz
- KAZ Beacon “V” on 7091.500 kHz
- RUS MIL channelmarker on 3756 kHz on AM
- RUS buzzer on 7000 kHz on AM
Navigation Systems
Broadcast Intrusions (AM)
- CHN Music Jammer on 18160 kHz (AM)
- CHN Music Jammer on 14260 kHz (AM)
- Radio Eritrea — VOBM — Jingle (7 MHz)
- Radio Ethiopia — Jingle (7 MHz)
- Radio Afghanistan on 7200 kHz
- Voice of Russia on 7200 kHz
- Sound of Hope and CHN jammer on 18080 kHz
Scrambler — Voice Encryption
Unknown Signals
- Mysterious “V” from Israel
- UKR secret service on 10120 kHz in AM every Wednesday at 0843 UTC
- Mysterious siren from VTN on 18112.5 kHz
- UKR secret service on 14280 kHz every Wednesday at 10 UTC
- CHN “moo” noise on 21000 kHz — A3E
- CHN chirpy noise on 21000 — 21200 kHz
- CHN multitone on 21000 kHz — A3E
- Mysterious oscillation — 28002 kHz — Caribbean Area
Pictures
