Amateur Radio
From Signal Identification Wiki
Description[edit]
These are signals used by and sometimes created by amateur radio enthusiasts and operators, including many experimental digital modes. You can find plenty of these signals in amateur frequency bands.
Click the name of a signal to see more detailed information, possible decoding, and additional sound and waterfall samples
| Inactive (No longer in use) |
Active (Currently in active use) |
Status Unknown or Intermittent |
| Signal Name | Description | Frequency | Mode | Modulation | Bandwidth | Location | Sample Audio | Waterfall image |
|---|---|---|---|---|---|---|---|---|
| 8PSK | 8PSK8-Phase Phase-Shift Keying (3 bits per symbol) is an amateur digital UTF8-text and data mode designed by John Phelps KL4YFD in 2014. It's goal is to provide medium speed data using generic FMFrequency Modulation and SSBSingle-sideband modulation radios. | 3 MHzMegaHertz (MHz) 10^6 Hz — 3,000 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables),FMFrequency Modulation | 8PSK8-Phase Phase-Shift Keying (3 bits per symbol) | 125 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 1.2 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| ALE-400 | ALEAutomatic Link Establishment-400 is an amateur version of the 2G ALEAutomatic Link Establishment standard. It is adapted to the demands of amateur radio emergency traffic handling. | 1.806 MHzMegaHertz (MHz) 10^6 Hz — 144.163 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| AMSAT-P3D | AMSAT-P3D (Known as Phase 3D, OSCAR-40, and AO-40) is a amateur radio satellite built by AMSAT. As of 2004, the satellite's systems have failed. | 145.805 MHzMegaHertz (MHz) 10^6 Hz — 24,048.285 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying | 1.6 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| ASCII | ASCII (also known as ITA5 or IRA) is an amateur radio telegraphy signal using the ITA-5 alphabet. | 3 MHzMegaHertz (MHz) 10^6 Hz — 450 MHzMegaHertz (MHz) 10^6 Hz | NFMNarrowband Frequency Modulation, USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | FSKFrequency-Shift Keying | 300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| Adam H Image Capable Digital Mode (AHICDM) | AHICDM is a simple, slow and reliable modulation protocol that allows binary data in standard ASCII to be sent over audio. | Digital | Custom | United Kingdom |  |
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| Adam H Secure Communication (AHSC) | AHSC uses a randomly generated One-Time-Pad to secure communications between transmitter and receiver. Used for unscheduled transferring of data due to the architecture of the protocol / mode which makes decoding the message impossible if the transmission was not listened to from the beginning. | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | United Kingdom |  |
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| Automatic Link Establishment (2G ALE) | Automatic Link Establishment, 2G ALEAutomatic Link Establishment (Official designation MIL-STD-188-141A and/or MIL-STD-188-141B (Appendix A)) is the current standardized method of establishing connections between radio operators. Also known as FED-STD 1045, FED-STD 1049, and STANAGNATO Standardization Agreement (STANAG), defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the North Atlantic Treaty Organization (NATO). 5066. | 3.068 MHzMegaHertz (MHz) 10^6 Hz — 28.313 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 2 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| Automatic Packet Reporting System (APRS) | Packet system for real time data communications. Used by hams for location reporting, weather stations etc. | 144.39 MHzMegaHertz (MHz) 10^6 Hz — 432.5 MHzMegaHertz (MHz) 10^6 Hz | NFMNarrowband Frequency Modulation | AFSKAudio Frequency-Shift Keying | 12.5 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| CAS-4A/B Satellite Telemetry | CAS-4A/B Satellite 4.8 kbpsKilobits per second (kbps) GMSKGaussian Minimum-Shift Keying Telemetry Downlink. | 145.835 MHzMegaHertz (MHz) 10^6 Hz — 145.89 MHzMegaHertz (MHz) 10^6 Hz | NFMNarrowband Frequency Modulation | GMSKGaussian Minimum-Shift Keying | 10 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| CCIR 493-4 Selcall | CCIRComité Consultatif International pour la Radio (Predecessor of the ITU-R) 493-4 Selcall, also known as HFHigh Frequency (3-30 MHz) Selcall, Australian Selcall, and Codan 8580 Selcall, is a Selcall standard developed in Australia for the HFHigh Frequency (3-30 MHz) band. Used by Amateur radio and Codan Modems. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | FSKFrequency-Shift Keying | 300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| CHIP | CHIP, or CHIP64, is a spread-spectrum PSKPhase-Shift Keying mode developed by Antonino Porcino IZ8BLY. | 7.09 MHzMegaHertz (MHz) 10^6 Hz — 14.11 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying | 580 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| CLOVER 2000 | CLOVER 2000 is an upgrade to CLOVER-II, a digital data protocol developed by Ray Petit and HAL Communications. Sometimes referred to as XCLOVER or 8 Tone CLOVER. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying, QAMQuadrature Amplitude Modulation | 2 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| CLOVER 2500 | CLOVER 2500 is a new upgrade to CLOVER-2000, adding 25% more speed to the CLOVER system. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying, QAMQuadrature Amplitude Modulation | 2.5 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| CLOVER-I | CLOVER-I was the first iteration of the Clover series of digital modes. Was never released for commercial use, replaced by CLOVER-II. Also known as Cloverleaf. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying, QAMQuadrature Amplitude Modulation | 100 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| CLOVER-II | CLOVER-II is the advancement of CLOVER-I, with 4 tone pulses and a max data rate of 750 bpsBits per second (bps). Also known as Q-CLOVER and QUAD-CLOVER. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying, QAMQuadrature Amplitude Modulation | 500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| Coherent BPSK | Coherent BPSKBinary Phase-Shift Keying (1 bit per symbol), also known as C-BPSKBinary Phase-Shift Keying (1 bit per symbol), was an experimental amateur mode developed by Bill DeCarle VE2IQ. | 138 kHzKiloHertz (kHz) 10^3 Hz — 18.081 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying | 200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| Coherent CW | Coherent CWContinuous Wave (also known as CCW) was a strictly timed morse code mode designed by Ray Petit W7GHM (The same inventor of CLOVER). CCW depended on accurate timing from both receiver and transmitter. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | OOKOn-Off Keying Modulation | 1 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| Contestia | Contestia, developed by Nick Fedoseev (UT2UZ) in 2005, is a digital mode derived from Olivia. It aims to deliver a compromise of speed and performance. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 150 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 2 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| D-STAR | D-STAR is a digital voice protocol used by ham radio. Is sometimes routed over the internet for international communications. | 145.67 MHzMegaHertz (MHz) 10^6 Hz | NFMNarrowband Frequency Modulation | GMSKGaussian Minimum-Shift Keying | 6.25 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| DB0UPB research beacon | The is a research beacon for training neuronal networks. | 3.6 MHzMegaHertz (MHz) 10^6 Hz — 14.101 MHzMegaHertz (MHz) 10^6 Hz | LSBLower Side Band Modulation, USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying, LSBLower Side Band Modulation, USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | 2.7 kHzKiloHertz (kHz) 10^3 Hz | Germany |  |
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| Digital NBTV | Method for transmitting digital images via radio, similar to WinDRM or KG-STV | 3 MHzMegaHertz (MHz) 10^6 Hz — 470 MHzMegaHertz (MHz) 10^6 Hz | SSBSingle-sideband modulation, FMFrequency Modulation | BPSKBinary Phase-Shift Keying (1 bit per symbol) | 2.5 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| DominoEX | DominoEX, also known as just Domino, is an IFKIncremental Frequency Keying (Incremental Frequency Keying) mode developed by Murray Greenman ZL1BPU and Con Wassilieff ZL2AFP in 2004 that was the first fully developed iteration of the Domino IFKIncremental Frequency Keying family modes. Used to send text over RFRadio Frequency. | 5.332 MHzMegaHertz (MHz) 10^6 Hz — 28.117 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | IFKIncremental Frequency Keying | 173 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 524 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| DominoF | DominoF was the first experimental implementation of the Domino family of IFKIncremental Frequency Keying modes, developed by Con ZL2AFP. DominoF used dual interleaved tone sets. Superseded by DominoEX. | 1.838 MHzMegaHertz (MHz) 10^6 Hz — 28.08 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | IFKIncremental Frequency Keying | 220 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| FM NBTV | FMFrequency Modulation NBTV is a method to send moving images in a very narrow bandwidth (maximum 3 KHzKiloHertz (kHz) 10^3 Hz) | 3 MHzMegaHertz (MHz) 10^6 Hz — 470 MHzMegaHertz (MHz) 10^6 Hz | SSBSingle-sideband modulation, FMFrequency Modulation | FMFrequency Modulation, BPSKBinary Phase-Shift Keying (1 bit per symbol) | 2.3 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| FSK441 | FSK441 is a high speed meteor scatter communication mode. FSK441 uses a baudBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second. rate of 441 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. | 144 MHzMegaHertz (MHz) 10^6 Hz — 444 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | FSKFrequency-Shift Keying | 1.75 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| FSQ | Fast Simple QSO (FSQ) is an amateur radio digital modulation mode developed by Con Wassilieff ZL2AFP with Murray Greenman ZL1BPU in 2015. | 3.58 MHzMegaHertz (MHz) 10^6 Hz — 10.149 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | IFK+Offset Incremental Frequency Keying | 300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| FST4W | 136 kHzKiloHertz (kHz) 10^3 Hz — 1.839 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | 4-GFSKGaussian Frequency-Shift Keying | Worldwide | — |  |
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| FT4 | FT4 is an amateur radio QSO communication protocol. | 10.14 kHzKiloHertz (kHz) 10^3 Hz — 144.17 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | GFSKGaussian Frequency-Shift Keying | 83 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| FT8 | FT8 is an extremely-weak-signal amateur radio mode that transmits very limited communications. JS8, a variant of FT8, can send full conversations and relay messages | 1.84 MHzMegaHertz (MHz) 10^6 Hz — 144.174 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | GFSKGaussian Frequency-Shift Keying | 50 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| FUNcube-1 Telemetry | FUNcube-1 Telemetry is a telemetry signal sent from the Funcube-1 Cubesat amateur radio satellite. | 145.935 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying | 2 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| FreeDV COHPSK | FreeDV Coherent PSKPhase-Shift Keying (Also known as FreeDV 700) is a robust Digital Voice mode developed by David Rowe for his FreeDV Digital Voice Software. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying, QPSKQuadrature Phase-Shift Keying (2 bits per symbol), DQPSKDifferential Quadrature Phase-Shift Keying, OFDMOrthogonal Frequency-Division Multiplexing | 1.5 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| FreeDV plus Video | FreeDV plus Video (also known as FreeDV+) combines analog FMFrequency Modulation multicarrier Narrow Band TV (NBTV) by Con Wassilieff, ZL2AFP, and FreeDV digital voice by David Rowe, VK5DGR. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | OFDMOrthogonal Frequency-Division Multiplexing, analog FMFrequency Modulation multicarrier | 3.5 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| Frequency Division Multiplex Digital Voice (FDMDV) | Frequency Division Multiplex Digital Voice (FDMDV), also known as FDMDV 14+1-tone, is a digital voice mode originally developed by Peter Martinez G3PLX and Francesca Lanza HB9TLK. It has since been improved upon by David Rowe. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying | 1.125 kHzKiloHertz (kHz) 10^3 Hz — 1.3 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| G-TOR | Golay-Teleprinting Over Radio (G-TOR) is an FSKFrequency-Shift Keying proprietary standard developed by Kantronics Inc. and is used by radio amateurs, military (Irish Air Corps/Navy, Mexican army) and governmental agencies (ICRC). | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | FSKFrequency-Shift Keying | 350 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| Hellschreiber | Hellschreiber (Also known as Feld Hell or just Hell) is a teleprinter system developed in the late 1920's by Rudolf Hell, a German inventor. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | OOKOn-Off Keying Modulation, FSKFrequency-Shift Keying, MSKMinimum-Shift Keying (When Shift/Bd = 0.5. It is impossible to get this ratio to be lower than 0.5, hence it is called the 'Minimum' shift.) | 350 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 800 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| Horus Binary 4FSK - v2 | An efficient RTTYRadio TeleTYpe-like 4FSK4-Level Frequency Shift Keying mode that transmits binary data, used for amateur high altitude balloon telemetry. Developed by the Project Horus group. | 431 MHzMegaHertz (MHz) 10^6 Hz — 434 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | 4FSK4-Level Frequency Shift Keying | 1 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| ISCAT | Ionospheric Scattering (ISCAT) mode used for weak signal long distance radio contact by meteor and Ionosphere scattering. | 50 MHzMegaHertz (MHz) 10^6 Hz — 148 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 904 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 1.809 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| JS8 | JS8Call is an extremely-weak-signal amateur radio communication mode based on FT8. It allows FT8 to be used for conversations and message relaying. | 1.842 MHzMegaHertz (MHz) 10^6 Hz — 50.318 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | GFSKGaussian Frequency-Shift Keying | 50 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| JT65 | JT65 is an amateur radio QSO communication protocol developed by Joe Taylor, K1JT. JT65 has 3 submodes: JT65A, JT65B, and JT65C. The most popular submode of JT65 is JT65A. JT65 gets '65' from the 65 tones it uses. | 1.838 MHzMegaHertz (MHz) 10^6 Hz — 50.276 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 180 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 710 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| JT6M | JT6M is part of the WSJT suite of digital weak signal software applications developed by Joe Taylor, K1JT | 50.215 MHzMegaHertz (MHz) 10^6 Hz — 50.25 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 1 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| JT9 | JT9 is a very narrow 9-FSKFrequency-Shift Keying mode for making contact (QSO's) under extreme weak-signal conditions. | 3.578 MHzMegaHertz (MHz) 10^6 Hz — 28.079 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 20 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| JTMS | JTMS is a meteor scatter mode that uses MSKMinimum-Shift Keying (When Shift/Bd = 0.5. It is impossible to get this ratio to be lower than 0.5, hence it is called the 'Minimum' shift.). JTMS behaves similarily to FSK441. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MSKMinimum-Shift Keying (When Shift/Bd = 0.5. It is impossible to get this ratio to be lower than 0.5, hence it is called the 'Minimum' shift.) | 1.7 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| KG-STV | KG-STV is an image transmission mode developed by JJ0OBZ in Japan. | 3.733 MHzMegaHertz (MHz) 10^6 Hz — 10,489.625 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | 4FSK4-Level Frequency Shift Keying, MSKMinimum-Shift Keying (When Shift/Bd = 0.5. It is impossible to get this ratio to be lower than 0.5, hence it is called the 'Minimum' shift.) | 500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 2.5 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| Kiwi | Kiwi is a telemetry mode developed by CNES used on amateur rockets and radio balloons in France. | 137.95 MHzMegaHertz (MHz) 10^6 Hz — 138.5 MHzMegaHertz (MHz) 10^6 Hz | NFMNarrowband Frequency Modulation | FSKFrequency-Shift Keying | 12.5 kHzKiloHertz (kHz) 10^3 Hz | France |  |
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| Lentus | Lentus is an extremely slow QRPIn amateur radio, QRP operation refers to transmitting at reduced power while attempting to maximize one's effective range. mode developed by Patrick Lindecker F6CTE used to transmit QRPIn amateur radio, QRP operation refers to transmitting at reduced power while attempting to maximize one's effective range.'s at very low power. Each 43-character (75 bit) transmission takes roughly 5 minutes to transmit across 32 possible tones in a tight 25 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). bandwidth. | 136.3 kHzKiloHertz (kHz) 10^3 Hz — 14.096 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 25 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| M17 RF Protocol | An open source digital mode developed for amateur and other radio applications. | 30 MHzMegaHertz (MHz) 10^6 Hz — 10,500 MHzMegaHertz (MHz) 10^6 Hz | NFMNarrowband Frequency Modulation | 4FSK4-Level Frequency Shift Keying | 9 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| MFJ-269C Antenna SWR Analyzer | Popular antenna analyzer among ham operators and the like. Output power is only ~20mW so if heard, source is nearby. Other MFJ models may be similar. | 500 kHzKiloHertz (kHz) 10^3 Hz — 500 MHzMegaHertz (MHz) 10^6 Hz | AMAmplitude Modulation, NFMNarrowband Frequency Modulation | 1 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| MSK144 | MSK144 is a Minimum Shift Keying FSKFrequency-Shift Keying signal used for amateur radio meteor-scatter contacts. It transmits 144 bit long packets at a baudrate of 2000 bpsBits per second (bps) using frequencies 1000 and 2000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).. | 50 MHzMegaHertz (MHz) 10^6 Hz — 440 MHzMegaHertz (MHz) 10^6 Hz | FMFrequency Modulation | MSKMinimum-Shift Keying (When Shift/Bd = 0.5. It is impossible to get this ratio to be lower than 0.5, hence it is called the 'Minimum' shift.) | 2.5 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| MT63 | MT63 is a Orthogonal Frequency Division Multiplexed (OFDMOrthogonal Frequency-Division Multiplexing) digital data mode aimed for use in high noise environments. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | OFDMOrthogonal Frequency-Division Multiplexing, PSKPhase-Shift Keying | 500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 2 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| Morse Code (CW) | CWContinuous Wave Morse Code is the simplest form of transmission found virtually all over the RFRadio Frequency bands for a variety of uses. The most common use of this is for Call-sign Beacons by both Amateur and Military operators. | 3 kHzKiloHertz (kHz) 10^3 Hz — 250,000 MHzMegaHertz (MHz) 10^6 Hz | CWContinuous Wave | OOKOn-Off Keying Modulation | Worldwide |  |
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| Multi Frequency Shift Keying (MFSK) | MFSKMultiple Frequency Shift-Keying is a family of multi-frequency shift keying digital transmission modes. MFSKMultiple Frequency Shift-Keying-8 and MFSKMultiple Frequency Shift-Keying-16 are two well-known amateur radio modes. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 154 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 630 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| Narrow-Bandwidth Television (NBTV) | Narrow-Bandwidth Television (NBTV). | 1.8 MHzMegaHertz (MHz) 10^6 Hz — 50 MHzMegaHertz (MHz) 10^6 Hz | AMAmplitude Modulation, FMFrequency Modulation | 13 kHzKiloHertz (kHz) 10^3 Hz | Worldwide | — |  |
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| OFDM NBTV | OFDMOrthogonal Frequency-Division Multiplexing NBTV is an analog technique, in fact it is a true Fuzzy design as well. The transmission technique used is quite different from conventional TV | 3 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 30 MHzMegaHertz (MHz) 10^6 Hz | SSBSingle-sideband modulation | Analog OFDMOrthogonal Frequency-Division Multiplexing | 2 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| OPERA Beacon and Data | OPERA Ad-Hoc Data/Beacon. The system is unique in that utilizes a serial data stream and Manchester coding, its therefore impossible to lose lock and its extremely robust in disturbed paths and heavy static. | 136 kHzKiloHertz (kHz) 10^3 Hz — 10,000 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | ASKAmplitude-Shift Keying | 1 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| Olivia | OLIVIA is an amateur digital teletype mode designed by Pawel Jalocha SP9VRC in 2005. Its goal was to be effective even in poor propagation conditions. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 125 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 2 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| PACKET | Packet, also known as FSK300, AFSK1200, BPSK300, QPSK600, BPSK1200, QPSK2400, AX.25 and IL2P, is a packet based protocol derived from X.25 and HDLC computer network protocols. Packet radio is a synchronous system in which data is transmitted in frames. | 3 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | FSKFrequency-Shift Keying | 730 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| PACTOR I | PACTOR-I is a digital data protocol combining elements of PACKET and AMTOR ARQAutomatic Repeat reQuestAutomatic Repeat Query. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | FSKFrequency-Shift Keying | 300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| PACTOR II | PACTOR II is an advancement of PACTOR I. It is up to 8 times faster than PACTOR I. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying | 450 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| PACTOR III | PACTOR III introduces 6 speed levels that provide higher throughput and improved robustness compared to PACTOR I and II. PACTOR III is on average 3.5 times faster than PACTOR II. With optimal conditions, PACTOR III becomes over 5 times faster. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying | 400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 2.4 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| PACTOR IV | PACTOR IV is the newest iteration of the PACTOR series, advancing from PACTOR I-III. It is 1.5x-3x faster than PACTOR III, and has 10 speed levels. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying, QAMQuadrature Amplitude Modulation | 300 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 2.4 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| PAX | PAX and PAX2 are developed by Patrick Lindecker F6CTE in 2005, and was derived from Olivia. It utilizes the AX.25 protocol that PACKET uses, and had a minimum SNR of -10dB. Can transmit APRSAutomatic Packet Reporting System, an amateur radio-based system for real time tactical digital communications of information of immediate value in the local area frames. | 3.59 MHzMegaHertz (MHz) 10^6 Hz — 144.62 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| PSK-AM | PSKPhase-Shift Keying-AMAmplitude Modulation is an amateur digital mode developed by Patrick Lindecker F6CTE in 2002/2003, and incorporates FECForward Error Correction interleaving. PSKPhase-Shift Keying-AMAmplitude Modulation uses the modulation of PSK10/31 with the FECForward Error Correction of SITOR-B. | 10.148 MHzMegaHertz (MHz) 10^6 Hz — 144.62 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying | 40 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 180 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| PSK2K | PSK2K is a meteor scatter type of mode written by DJ5HG Using a modulation scheme of BPSKBinary Phase-Shift Keying (1 bit per symbol) at 2000 BdBaud (unit symbol Bd) is the unit for symbol rate or modulation rate in symbols per second.. | 50.36 MHzMegaHertz (MHz) 10^6 Hz — 144.36 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying | 2 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| Phase Shift Keying (PSK) | PSKPhase-Shift Keying is a digital teletype mode based on Phase-Shift Keying (PSKPhase-Shift Keying) modulation. The most popular amateur radio PSKPhase-Shift Keying mode is PSKPhase-Shift Keying 31. | 1.838 MHzMegaHertz (MHz) 10^6 Hz — 909 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying | 10 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 1 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| Q15X25 | Q15X25, also known as NEWQPSK, is an experimental amateur radio packet modem developed by Pawel Jalocha SP9VRC. Q15X25 is a OFDMOrthogonal Frequency-Division Multiplexing QPSKQuadrature Phase-Shift Keying (2 bits per symbol) implementation of the AX.25 Packet protocol used in PACKET. | 3.585 MHzMegaHertz (MHz) 10^6 Hz — 14.109 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying, OFDMOrthogonal Frequency-Division Multiplexing | 1.95 kHzKiloHertz (kHz) 10^3 Hz — 2.35 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| QO-100-modem | High speed modem for qo-100 amateur satellite narrow transponder. | 10,489.5 MHzMegaHertz (MHz) 10^6 Hz — 10,490 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | QPSKQuadrature Phase-Shift Keying (2 bits per symbol), BPSKBinary Phase-Shift Keying (1 bit per symbol), APSK | 2.7 kHzKiloHertz (kHz) 10^3 Hz | QO-100 footprint |  |
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| Quadcopter Telemetry Signal | This signal originates from the Silicon Instruments Si1000 Software Defined Radio (SDR) that is a component of the 3DR Telemetry Radio, sold for use as a data link between a computer ground station and a UAV "a drone". | 414 MHzMegaHertz (MHz) 10^6 Hz — 935 MHzMegaHertz (MHz) 10^6 Hz | FHSS-TDM | BPSKBinary Phase-Shift Keying (1 bit per symbol), QAMQuadrature Amplitude Modulation, 8PSK8-Phase Phase-Shift Keying (3 bits per symbol) | Worldwide | No Audio File |  |
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| ROS | ROS is an amateur radio teletype free running QSO mode designed for low signal/high noise conditions. | 1.8 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | DSSS | 2 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| RTTYM | RTTYM, developed by Nick Fedoseev (UT2UZ) in 2005, is a digital mode derived from Olivia. It aims to deliver a compromise of speed and performance. RTTYM is about 4x faster than Olivia, but trades the speed for reduced robustness and sensitivity. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 150 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 2 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| Radio Teletype (RTTY) | RTTYRadio TeleTYpe (Also known as Baudot or ITA2) uses the Baudot 5-bit alphabet with FSKFrequency-Shift Keying to send text messages over the shortwave. This mode is gradually dying out in favor of more robust modes like PSK31 in the amateur service. | 147.3 kHzKiloHertz (kHz) 10^3 Hz — 28.15 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | FSKFrequency-Shift Keying | 85 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 850 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| Redundant Digital File Transfer (RDFT) | RDFT is an amateur radio digital mode used to transmit files. | 9.065 MHzMegaHertz (MHz) 10^6 Hz — 9.24 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying | 1.8 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| Robust PACKET | Robust PACKET, also known as HFHigh Frequency (3-30 MHz)-APRSAutomatic Packet Reporting System, an amateur radio-based system for real time tactical digital communications of information of immediate value in the local area, RPR, Winlink RMS, and APRSlink, is an OFDMOrthogonal Frequency-Division Multiplexing version of the amateur mode PACKET which is optimized for shortwave use. This mode was developed by Spezielle Communications Systeme GmbH & Co. KG (SCS). | 3.61 MHzMegaHertz (MHz) 10^6 Hz — 14.103 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | PSKPhase-Shift Keying, OFDMOrthogonal Frequency-Division Multiplexing | 500 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| Single Sideband Voice | Single-sideband voice is a subtype of AMAmplitude Modulation voice modulation. It is used in HFHigh Frequency (3-30 MHz) amateur bands and for weak signal VHFVery High Frequency (30-300 MHz) and UHFUltra High Frequency (300-3000 MHz) voice, as well as aircraft weather reports. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | SSBSingle-sideband modulation | AMAmplitude Modulation | 1.9 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| Slow-Scan Television (SSTV) | Slow-scan television (SSTV) is a method for picture transmission used by amateur radio operators to transmit and receive images. | 3 MHzMegaHertz (MHz) 10^6 Hz — 450 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables), LSBLower Side Band Modulation, NFMNarrowband Frequency Modulation | FMFrequency Modulation | 2.5 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| THOR | THOR is an adaptation of DominoEX with MFSK16 binary varicode and FECForward Error Correction. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | IFKIncremental Frequency Keying | 173 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 524 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| THROB | THROB is a unique data mode that relies heavily on DSP techniques, using MFSKMultiple Frequency Shift-Keying and AMAmplitude Modulation modulation techniques together. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 72 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 188 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| VARA HF | VARA HFHigh Frequency (3-30 MHz) is a sound-card mode used to exchange traffic (Mostly Winlink traffic) on the HFHigh Frequency (3-30 MHz) bands | 1.8 MHzMegaHertz (MHz) 10^6 Hz — 54 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | BPSKBinary Phase-Shift Keying (1 bit per symbol), 4-8PSK8-Phase Phase-Shift Keying (3 bits per symbol), 16-32QAM, FSKFrequency-Shift Keying | 2.75 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| VOICE | VOICE is a MFSKMultiple Frequency Shift-Keying mode developed by Patrick Lindecker F6CTE in 2006, and was derived from Olivia. It was designed for blind or partially sighted amateur radio operators. | 3 MHzMegaHertz (MHz) 10^6 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| WSPR | Weak Signal Propagation Reporter. | 136 kHzKiloHertz (kHz) 10^3 Hz — 1,296.5 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | MFSKMultiple Frequency Shift-Keying | 6 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). | Worldwide |  |
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| WinDRM | WinDRM is an amateur radio derivation of the Digital Radio Mondiale (DRM) digital voice and data transmission protocol. Also known as HamDRM, and Digital SSTV. | 14.236 MHzMegaHertz (MHz) 10^6 Hz | USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) | QAMQuadrature Amplitude Modulation, OFDMOrthogonal Frequency-Division Multiplexing | 2.2 kHzKiloHertz (kHz) 10^3 Hz — 2.4 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
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| Yaesu System Fusion | System Fusion is Yaesu's digital voice/data protocol for amateur radio, using the AMBE+2 vocoder on a C4FMContinuous 4-Level Frequency Modulation signal. | 144 MHzMegaHertz (MHz) 10^6 Hz — 450 MHzMegaHertz (MHz) 10^6 Hz | FMFrequency Modulation | 4FSK4-Level Frequency Shift Keying | 16 kHzKiloHertz (kHz) 10^3 Hz | Worldwide |  |
Pages in category "Amateur Radio"
The following 82 pages are in this category, out of 82 total.
