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Signal Name	Description	Frequency	Mode	Modulation	Bandwidth	Location	Sample Audio	Waterfall image
1G Advanced Mobile Phone System (AMPS)	The first generation of cellular mobile telecommunications, which used analogue NFMNarrowband Frequency Modulation voice.	824 MHzMegaHertz (MHz) 10^6 Hz — 894 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FMFrequency Modulation, FSKFrequency-Shift Keying	10 kHzKiloHertz (kHz) 10^3 Hz — 30 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
2G CDMA (IS-95)	CDMACode Division Multiple Access-One also known as IS-95, was the first ever cellular standard technology based off of CDMACode Division Multiple Access. It is now defunct due to GSM and later classes of cellular techs replacing it. It is a predecessor of the 1xRTT (CDMA2000/IS-2000) standard, which is backwards compatible.	815 MHzMegaHertz (MHz) 10^6 Hz — 1,995 MHzMegaHertz (MHz) 10^6 Hz	RAW	QPSKQuadrature Phase-Shift Keying (2 bits per symbol)	1.228 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
3G WCDMA	WCDMA, known primarily as 3G mobile, is a family of 3G data protocols used to send voice, text and signaling data to smart phones and other wireless devices.	824 MHzMegaHertz (MHz) 10^6 Hz — 2,100 MHzMegaHertz (MHz) 10^6 Hz	RAW, AMAmplitude Modulation	QAMQuadrature Amplitude Modulation, QPSKQuadrature Phase-Shift Keying (2 bits per symbol), CDMACode Division Multiple Access	4.2 MHzMegaHertz (MHz) 10^6 Hz
4G LTE Network	Long Term Evolution Network. Also known as 4G LTE Data and Evolved Universal Terrestrial Radio Access (E-UTRA). Data service for wireless consumer devices.	450 MHzMegaHertz (MHz) 10^6 Hz — 3,500 MHzMegaHertz (MHz) 10^6 Hz	RAW	OFDMOrthogonal Frequency-Division Multiplexing, PSKPhase-Shift Keying, QAMQuadrature Amplitude Modulation	1.4 MHzMegaHertz (MHz) 10^6 Hz — 20 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
5G "New Radio" cellular network - Downlink	5G cellular, also known by 3GPP '5G' NR (new radio), etc. is a newly released cellular standard that allows for backwards compatibility with 4G LTE, and will allow for several gigabits of connection speeds, (up to 10-100Gb) per second. This is the 600 MHzMegaHertz (MHz) 10^6 Hz downlink band for the new standard.	600 MHzMegaHertz (MHz) 10^6 Hz — 50,000 MHzMegaHertz (MHz) 10^6 Hz	AMAmplitude Modulation	UFMC, GFDM, OFDMOrthogonal Frequency-Division Multiplexing, FBMC	100 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
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
ATSC 3.0 Broadcast	The Advanced Television Systems Committee (ATSC) 3.0 standard (marketed as NextGen TV) is a revised set of video broadcasting specifications that outlines improvements to spectrum efficiency.		RAW	OFDMOrthogonal Frequency-Division Multiplexing, QAMQuadrature Amplitude Modulation	6 MHzMegaHertz (MHz) 10^6 Hz	United States, South Korea, Jamaica	—
ATSC Broadcast	Advanced Television Systems Committee Television. 8VSB Modulation	54 MHzMegaHertz (MHz) 10^6 Hz — 700 MHzMegaHertz (MHz) 10^6 Hz	RAW	8VSB	6 MHzMegaHertz (MHz) 10^6 Hz	United States	—
Amplitude Modulation (AM)	Long range commercial broadcast and international radio. Also used for aviation communications.	153 kHzKiloHertz (kHz) 10^3 Hz — 137 MHzMegaHertz (MHz) 10^6 Hz	AMAmplitude Modulation	AMAmplitude Modulation	10 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Amplitude Modulation Signalling System (AMSS)	Amplitude Modulation Signalling System (AMSS) is a DRM-based radiotext and data technology for AMAmplitude Modulation broadcasting, like RDS that is used for FMFrequency Modulation. It transmits as a subcarrier, phase-modulating the carrier frequency.	100 kHzKiloHertz (kHz) 10^3 Hz — 30 MHzMegaHertz (MHz) 10^6 Hz	SSBSingle-sideband modulation	AMAmplitude Modulation, PSKPhase-Shift Keying	200 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
Aprizesat	Data downlink from Aprizesat microsatellites. Aprizesat constellation consists of 12 Active satellites, These provide a worldwide M2M asset tracking service and relay AIS packets.	400.5 MHzMegaHertz (MHz) 10^6 Hz — 400.65 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)	GMSKGaussian Minimum-Shift Keying	5 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Autocab	This is an example of the Autocab Media Data Terminals used by cab companies all over the world.	163.375 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	PSKPhase-Shift Keying	12.5 kHzKiloHertz (kHz) 10^3 Hz	United Kingdom
Automatic Vehicle Monitoring (AVM)	Proprietary FFSKFast Frequency-Shift Keying data network used for public transport telemetry. It is primarily used to track and control vehicles, and facilitates PTTPush To TalkPress to TransmitMinistries of Postal, Telephone, and Telegraph Service (Soviet Agency)-ID for communication with tram drivers.	507.225 MHzMegaHertz (MHz) 10^6 Hz — 517.875 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FFSKFast Frequency-Shift Keying	7.5 kHzKiloHertz (kHz) 10^3 Hz	Australia
Broadband Global Area Network (BGAN)	Proprietary satellite network owned and operated by Inmarsat that provides cellular 3G equivalent data and voice services to subscribers.	1,525 MHzMegaHertz (MHz) 10^6 Hz — 1,559 MHzMegaHertz (MHz) 10^6 Hz	WFMWideband Frequency Modulation	QPSKQuadrature Phase-Shift Keying (2 bits per symbol)	200 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
CBET	CBET "Critical Band Encoded Tones" are tones added into radio broadcast's audio output for identification purposes.	520 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 108 MHzMegaHertz (MHz) 10^6 Hz		FMFrequency Modulation, AMAmplitude Modulation	2 kHzKiloHertz (kHz) 10^3 Hz
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
CDMA2000 (3G physical layer)	CDMACode Division Multiple Access is another standard for Cellular Devices with GSM being the first encrypted standard.	450 MHzMegaHertz (MHz) 10^6 Hz — 1,900 MHzMegaHertz (MHz) 10^6 Hz	RAW	QPSKQuadrature Phase-Shift Keying (2 bits per symbol)	1.23 MHzMegaHertz (MHz) 10^6 Hz	United States
CDMA420		410 MHzMegaHertz (MHz) 10^6 Hz — 425 MHzMegaHertz (MHz) 10^6 Hz	AMAmplitude Modulation	QPSKQuadrature Phase-Shift Keying (2 bits per symbol)	2.5 MHzMegaHertz (MHz) 10^6 Hz	Poland
China digital radio (CDR)	Convergent Digital Radio (CDR) or China Digital Radio is an in-band-on-channel (IBOCIn-Band On-Channel (IBOC) is a hybrid method of transmitting digital radio and analog radio broadcast signals simultaneously on the same frequency.) digital radio broadcasting format used in China. It can be found in multiple bandwidth configurations with different modulation formats.	106.1 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	100 kHzKiloHertz (kHz) 10^3 Hz — 500 kHzKiloHertz (kHz) 10^3 Hz	China
Digital Audio Broadcasting (DAB)	DAB is an audio broadcasting standard containing a multiplex of digital radio stations in the signal.	174 MHzMegaHertz (MHz) 10^6 Hz — 239 MHzMegaHertz (MHz) 10^6 Hz	AMAmplitude Modulation	OFDMOrthogonal Frequency-Division Multiplexing	1.536 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
Digital Audio Broadcasting Plus (DAB+)	DAB+ is a medium of delivering broadcast radio, containing multiple stations in a single multiplex.	174 MHzMegaHertz (MHz) 10^6 Hz — 230 MHzMegaHertz (MHz) 10^6 Hz		OFDMOrthogonal Frequency-Division Multiplexing	1.536 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
Digital Dispatch Systems MDT	Digital Dispatch Systems Mobile Data Terminal is a dispatching system used by taxi and private transportation companies.	152 MHzMegaHertz (MHz) 10^6 Hz — 854.788 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	PSKPhase-Shift Keying	8 kHzKiloHertz (kHz) 10^3 Hz	United States
Digital Enhanced Cordless Telecommunications (DECT)	DECT is a ETSIEuropean Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards. standard for short range communications, mainly cordless phones. It uses a 10 channel/24 slots in a TDMATime Division Multiple Access FDD structure. Audio sample is 100 times slower than real for listening purposes.	1,880 MHzMegaHertz (MHz) 10^6 Hz — 1,900 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	1.6 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
Digital Multimedia Broadcasting (DMB)	Digital Multimedia Broadcasting (DMB) is a digital radio transmission technology developed in South Korea as part of the national IT project for sending multimedia such as TV, radio and datacasting to mobile devices such as mobile phones, laptops and GPS navigation systems.	174 MHzMegaHertz (MHz) 10^6 Hz — 216 MHzMegaHertz (MHz) 10^6 Hz		DQPSKDifferential Quadrature Phase-Shift Keying, OFDMOrthogonal Frequency-Division Multiplexing	1.536 MHzMegaHertz (MHz) 10^6 Hz	South Korea	—
Digital Radio Mondiale (DRM)	Digital Radio Mondiale (DRM) is a digital commercial broadcasting mode used to deliver FMFrequency Modulation-comparable sound quality to shortwave radio.	531 kHzKiloHertz (kHz) 10^3 Hz — 26.06 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	4.5 kHzKiloHertz (kHz) 10^3 Hz — 20 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Digital Radio Mondiale Plus (DRM+)	DRM+ is a VHFVery High Frequency (30-300 MHz) implementation of DRM primarily for the FMFrequency Modulation broadcast band.	47 MHzMegaHertz (MHz) 10^6 Hz — 230 MHzMegaHertz (MHz) 10^6 Hz		OFDMOrthogonal Frequency-Division Multiplexing	100 kHzKiloHertz (kHz) 10^3 Hz	Worldwide	—
Digital Video Broadcasting — Terrestrial (DVB-T)	Digital Video Broadcasting — Terrestrial (DVB-T) is a digital broadcast television format used in Europe and in many other countries in the world.	174 MHzMegaHertz (MHz) 10^6 Hz — 786 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, QPSKQuadrature Phase-Shift Keying (2 bits per symbol)	6 MHzMegaHertz (MHz) 10^6 Hz — 8 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
Digital-Coded Squelch (DCS)	Digital in-band signalling used to squelch and manage transmissions on a given frequency.	433 MHzMegaHertz (MHz) 10^6 Hz — 446 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FSKFrequency-Shift Keying		Worldwide
European Radio Message System (ERMES)	European Radio Message System (ERMES) is a European common standard for paging developed by the European Telecommunications Standards Institute (ESTI)	169.413 MHzMegaHertz (MHz) 10^6 Hz — 169.833 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	4FSK4-Level Frequency Shift Keying	25 kHzKiloHertz (kHz) 10^3 Hz	Europe
FLASH-OFDM	Fast Low-latency Access with Seamless Handoff Orthogonal Frequency Division Multiplexing (FLASH-OFDMOrthogonal Frequency-Division Multiplexing) is a mobile data access technology developed by Flarion.	450 MHzMegaHertz (MHz) 10^6 Hz	WFMWideband Frequency Modulation	MC-CDMACode Division Multiple Access	2 MHzMegaHertz (MHz) 10^6 Hz	Finland, Slovakia, Germany, United States
FLEX	FLEX (Flexible Wide Area Paging Protocol) is Motorola's high speed one-way paging protocol that supports 1600, 3200, and 6400 bpsBits per second (bps). FLEX can transmit tone, numeric, alphanumeric, and binary data.	152.6 MHzMegaHertz (MHz) 10^6 Hz — 931.938 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FSKFrequency-Shift Keying, 4FSK4-Level Frequency Shift Keying	5 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
FM Broadcast Radio	Commercial Broadcast FMFrequency Modulation radio stations. Used for the broadcast of many different radio programs, including music, news, sports, weather, and talk shows.	65 MHzMegaHertz (MHz) 10^6 Hz — 108 MHzMegaHertz (MHz) 10^6 Hz	WFMWideband Frequency Modulation	FMFrequency Modulation	38 kHzKiloHertz (kHz) 10^3 Hz — 200 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Gandalf MDT	Gandalf MDTMobile Data Terminal, A mobile data terminal (MDT) is a computerized device used in public transit vehicles, taxicabs, commercial trucking fleets, military logistics, and emergency vehicles, such as police cars, to communicate with a central dispatch office. was developed by Gandalf Mobile Systems, a subsidiary of Canadian company Gandalf Technologies. Used primarily by taxi and courier services in Canada and the United States. This protocol was used in Gandalf's Cabmate systems.	150 MHzMegaHertz (MHz) 10^6 Hz — 450 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	4FSK4-Level Frequency Shift Keying	10 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Global System for Mobile Communications (GSM)	GSM (Global System for Mobile Communications) is a standard developed by ETSIEuropean Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards. to describe the protocols for second-generation (2G) digital cellular networks used by mobile phones. As of 2014, it has become the default global standard for mobile communications.	450 MHzMegaHertz (MHz) 10^6 Hz — 1,900 MHzMegaHertz (MHz) 10^6 Hz	RAW, AMAmplitude Modulation, FMFrequency Modulation	GMSKGaussian Minimum-Shift Keying	200 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Globe Wireless HF Network	Globe Wireless' Maritime Digital Radio was a system of 24 stations around the globe offering data services to large cargo vessels. Since 2014, GW has discontinued their HFHigh Frequency (3-30 MHz) network.	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, FSKFrequency-Shift Keying, OFDMOrthogonal Frequency-Division Multiplexing	400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 2 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Golay Paging (GSC)	Golay Paging (or Golay Sequential Code, GSC) is a one-way 2-FSKFrequency-Shift Keying paging format developed by Motorola. It is capable of transmitting tone, numeric, alphanumeric, and voice pages.	33 MHzMegaHertz (MHz) 10^6 Hz — 932 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FSKFrequency-Shift Keying	2.6 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Gonets	Gonets (Russian Гонец, for Messenger) is a Russian civilian low Earth orbit communications satellite system.	265 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 388 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	GMSKGaussian Minimum-Shift Keying	20 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
HD Radio (AM)	HD Radio is a proprietary digital broadcast radio format transmitted in North America, usually as sidebands on analog carriers. This is the AMAmplitude Modulation band implementation of HD Radio.	535 kHzKiloHertz (kHz) 10^3 Hz — 1.7 MHzMegaHertz (MHz) 10^6 Hz	RAW	OFDMOrthogonal Frequency-Division Multiplexing	30 kHzKiloHertz (kHz) 10^3 Hz	United States
HD Radio (FM)	HD Radio is a proprietary digital broadcast radio format transmitted in North America, usually as sidebands on analog carriers. This is the FMFrequency Modulation band implementation of HD Radio.	87.7 MHzMegaHertz (MHz) 10^6 Hz — 107.9 MHzMegaHertz (MHz) 10^6 Hz	RAW	OFDMOrthogonal Frequency-Division Multiplexing	400 kHzKiloHertz (kHz) 10^3 Hz	United States
IS-54 D-AMPS	D-AMPS, also known as IS-54 and IS-136, is a second generation (2G) mobile phone system standard which develops on analog AMPS, a 1G standard. This system is also colloquially known as TDMATime Division Multiple Access.	824 MHzMegaHertz (MHz) 10^6 Hz — 894 MHzMegaHertz (MHz) 10^6 Hz		PSKPhase-Shift Keying	30 kHzKiloHertz (kHz) 10^3 Hz		—
Inmarsat Aero	Inmarsat Aero is the protocol that's used to link ground stations with aircraft via Inmarsat's satellite link. This protocol carries digital voice, fax and low speed data such as ACARS and ADS-C.	1,545 MHzMegaHertz (MHz) 10^6 Hz — 3,687 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	800 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 10.5 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
Inmarsat IsatM2M	IsatM2M Service operated by Inmarsat on existing Inmarsat-D/D+ infrastructure.	1,525 MHzMegaHertz (MHz) 10^6 Hz — 1,559 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	1.024 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Inmarsat-D(D+) Downlink	Inmarsat D+ (and it's predecessor, Inmarsat D) was Inmarsat's satellite paging system. The main use of the technology was in tracking trucks and buoys and SCADA applications.	1,525 MHzMegaHertz (MHz) 10^6 Hz — 1,559 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	640 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).	Worldwide
Integrated Services Digital Broadcasting—Terrestrial (ISDB-T)	ISDB-T (Integrated Services Digital Broadcasting – Terrestrial) is a new type of digital broadcasting system for providing audio, video and multimedia services. ISDB-T system was standardized at the Association of Radio Industries and Businesses (ARIB) in Japan. ISDB-T uses a modulation method referred to as Band Segmented Transmission (BST) OFDMOrthogonal Frequency-Division Multiplexing.	470 MHzMegaHertz (MHz) 10^6 Hz — 770 MHzMegaHertz (MHz) 10^6 Hz	RAW	QPSKQuadrature Phase-Shift Keying (2 bits per symbol), 64QAM	6 MHzMegaHertz (MHz) 10^6 Hz	Worldwide	—
Iridium	This is the L-band uplink/downlink for the Low Earth Orbit Iridium Satellite Constellation. This system is used for satellite based phone calls.	1,616 MHzMegaHertz (MHz) 10^6 Hz — 1,626.5 MHzMegaHertz (MHz) 10^6 Hz	RAW	PSKPhase-Shift Keying	31.5 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
IsatData Pro	Inmarsat's M2M data service for SCADA asset tracking and reporting.	1,525 MHzMegaHertz (MHz) 10^6 Hz — 1,559 MHzMegaHertz (MHz) 10^6 Hz				Worldwide	—
LTE Uplink	Acquired via telecommunications carrier hardware during interference investigation of an Australian cellular network.	700 MHzMegaHertz (MHz) 10^6 Hz — 2,600 MHzMegaHertz (MHz) 10^6 Hz	SC-FDMAFrequency Division Multiple Access	QPSKQuadrature Phase-Shift Keying (2 bits per symbol)	5 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
LTE-M		412.5 MHzMegaHertz (MHz) 10^6 Hz — 2,690 MHzMegaHertz (MHz) 10^6 Hz	AMAmplitude Modulation	OFDMA, 16-QAMQuadrature Amplitude Modulation	1.08 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
LoRa	LoRa (Long Range) is a proprietary low-power wide-area network modulation technique.	433 MHzMegaHertz (MHz) 10^6 Hz — 915 MHzMegaHertz (MHz) 10^6 Hz	FMFrequency Modulation	CSS	250 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Logic Trunked Radio (LTR)	Logic Trunked Radio, is an analog trunked radio format developed by EF Johnson Company.	150 MHzMegaHertz (MHz) 10^6 Hz — 470 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FSKFrequency-Shift Keying	12.5 kHzKiloHertz (kHz) 10^3 Hz — 25 kHzKiloHertz (kHz) 10^3 Hz
MDC1200	MDC (Motorola Data Communications), also known as Stat-Alert, MDC-1200 and MDC-600, is a Motorola two-way radio low-speed data system.	30 MHzMegaHertz (MHz) 10^6 Hz — 960 MHzMegaHertz (MHz) 10^6 Hz	FMFrequency Modulation	AFSKAudio Frequency-Shift Keying	12.5 kHzKiloHertz (kHz) 10^3 Hz — 20 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
MMP-4800	MMP-4800 was a MDTMobile Data Terminal, A mobile data terminal (MDT) is a computerized device used in public transit vehicles, taxicabs, commercial trucking fleets, military logistics, and emergency vehicles, such as police cars, to communicate with a central dispatch office. (Mobile Data Terminal) protocol developed by Canadian company Mobile Data International (MDI) in 1982 for their Mobile Data Terminals. Used by public safety and commercial industries. Phased out.	150 MHzMegaHertz (MHz) 10^6 Hz — 900 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation		12.5 kHzKiloHertz (kHz) 10^3 Hz — 25 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
MOBITEX	MOBITEX is an OSI based open standard, national public access wireless packet-switched data network.	400 MHzMegaHertz (MHz) 10^6 Hz — 900 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	GMSKGaussian Minimum-Shift Keying, FFSKFast Frequency-Shift Keying	15 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Motorola SECURENET	Motorola SECURENET ("analog" encryption) was a secure voice option for conventional and Motorola Type II trunked systems, encoding the voice using 12kbps CVSD and encrypting the bitstream. It is easily identified by the 6 kHzKiloHertz (kHz) 10^3 Hz tone at the end of transmission. As it is not 12.5 kHzKiloHertz (kHz) 10^3 Hz FCC narrowbanding mandate compliant, it does not see much use anymore.	137 MHzMegaHertz (MHz) 10^6 Hz — 941 MHzMegaHertz (MHz) 10^6 Hz	FMFrequency Modulation	FSKFrequency-Shift Keying	16 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Multitone Paging	Multitone Paging signal, developed by Multitone Electronics in the UK. Uses similar coding to POCSAG but the headers are different and only work with Multitone's range of paging products	25 MHzMegaHertz (MHz) 10^6 Hz — 470 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FFSKFast Frequency-Shift Keying	12.5 kHzKiloHertz (kHz) 10^3 Hz — 25 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
NB-IOT	Narrowband Internet of Things (NB-IoTInternet of Things) is a Low Power Wide Area Network (LPWAN) radio technology standard developed by 3GPP to enable a wide range of cellular devices and services.	700 MHzMegaHertz (MHz) 10^6 Hz — 1,900 MHzMegaHertz (MHz) 10^6 Hz	AMAmplitude Modulation	QPSKQuadrature Phase-Shift Keying (2 bits per symbol)	200 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
NTSC Broadcast	National Television System Committee (NTSC) Television broadcast is an analogue television broadcast mode. Currently being phased out in parts of the world in favor of digital broadcast.	54 MHzMegaHertz (MHz) 10^6 Hz — 806 MHzMegaHertz (MHz) 10^6 Hz	RAW	QAMQuadrature Amplitude Modulation, VSBVestigial Sideband Modulation	6 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
Near Field Communication (NFC)	Near-field communication (NFC) is a set of communication protocols that enables communication between two electronic devices over a distance of 4 cm (11⁄2 in) or less.	13.56 MHzMegaHertz (MHz) 10^6 Hz		ASKAmplitude-Shift Keying	1.7 MHzMegaHertz (MHz) 10^6 Hz	Worldwide	—
Near Instantaneous Companded Audio Multiplex (NICAM)	NICAM is used to provide digital stereo audio alongside PAL video for television broadcasts.	174 MHzMegaHertz (MHz) 10^6 Hz — 700 MHzMegaHertz (MHz) 10^6 Hz	RAW	PSKPhase-Shift Keying	400 kHzKiloHertz (kHz) 10^3 Hz	Worldwide	—
Nordic Mobile Telephone (NMT)	Nordic Mobile Telephone (NMT, NMT-450, and NMT-900) is a first generation analog cell phone system. Originally designed for and by Nordic countries (Finland, Sweden, Norway, Denmark) it was widely deployed around the world. Nowadays (as of 2015) NMT is defunct.	453 MHzMegaHertz (MHz) 10^6 Hz — 960 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FSKFrequency-Shift Keying	25 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
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
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
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
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
PAL Broadcast	Phase Alternating Line (PAL) Analogue Television Broadcast. Now phased out in most of the world.	47 MHzMegaHertz (MHz) 10^6 Hz — 862 MHzMegaHertz (MHz) 10^6 Hz	RAW	QAMQuadrature Amplitude Modulation, VSBVestigial Sideband Modulation, FMFrequency Modulation	6 MHzMegaHertz (MHz) 10^6 Hz — 8 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
POCSAG	POCSAG (Post Office Code Standardisation Advisory Group), also known as Super-POCSAG, Radio Paging Code No. 1 or RPC1, is a one-way 2FSK paging protocol that supports 512, 1200, and 2400 bpsBits per second (bps).	25 MHzMegaHertz (MHz) 10^6 Hz — 932 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FSKFrequency-Shift Keying	9 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Primary Aeronautical Surveillance Radar	A Primary radar (PSR Primary Surveillance Radar) is a conventional radar sensor that illuminates a large portion of space with an electromagnetic wave and receives back the reflected waves from targets within that space.	1,215 MHzMegaHertz (MHz) 10^6 Hz — 1,400 MHzMegaHertz (MHz) 10^6 Hz	RAW	Pulse	3 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
Primex Wireless Time Sync	Primex Wireless Time Sync is a VHFVery High Frequency (30-300 MHz) Time Synchronization signal used in Primex Wireless's XR Series.	72.02 MHzMegaHertz (MHz) 10^6 Hz — 72.98 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	PSKPhase-Shift Keying	20 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
Radio Data System (RDS)	Radio Data System (RDS) and its North American variant, Radio Broadcast Data System (RBDS), are data modes transmitted on subcarriers of commercial FMFrequency Modulation radio station transmissions.	65 MHzMegaHertz (MHz) 10^6 Hz — 108 MHzMegaHertz (MHz) 10^6 Hz	DSBDual Side Band Modulation	PSKPhase-Shift Keying	4 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
ReFLEX	ReFLEX is a two-way paging variant of FLEX.	896 MHzMegaHertz (MHz) 10^6 Hz — 941 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FFSKFast Frequency-Shift Keying	40 kHzKiloHertz (kHz) 10^3 Hz	United States
S-Band Jammer	This is what the signal of a military S-Band (In this case 2.4 GHzGigaHertz (GHz) 10^9 Hz) RADAR and WiFi intentional interference (Jamming) device looks like. This signal is generated by a DDS system and is then used to modulate the output of a 2.45 GHzGigaHertz (GHz) 10^9 Hz magnetron (The same as in a microwave oven).	2,400 MHzMegaHertz (MHz) 10^6 Hz		Noise	100 kHzKiloHertz (kHz) 10^3 Hz — 100 MHzMegaHertz (MHz) 10^6 Hz	Worldwide	—
SIGFOX	SIGFOX is a IoTInternet of Things wireless network system utilizing ETSIEuropean Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards.'s specification for Low Throughput Networks (LTN) and Ultra Narrow-Band (UNB) modulation.	868 MHzMegaHertz (MHz) 10^6 Hz — 868.6 MHzMegaHertz (MHz) 10^6 Hz	RAW	BPSKBinary Phase-Shift Keying (1 bit per symbol)	200 kHzKiloHertz (kHz) 10^3 Hz	Worldwide
STP403 Bus PIT System	STP403 is a bus PITPassenger Information Terminals, such as bus timetable displays at bus stops system used to update digital displays at bus stops. STP403 was developed by French companies INEO and CESATEC.	164 MHzMegaHertz (MHz) 10^6 Hz — 468.488 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FFSKFast Frequency-Shift Keying	8 kHzKiloHertz (kHz) 10^3 Hz	France
Secondary surveillance radar (SSR)	Secondary surveillance radar (SSR)is a radar system used in air traffic control. A surveillance radar system which uses transmitters/receivers (interrogators) and transponders.	1,030 MHzMegaHertz (MHz) 10^6 Hz	RAW	PPMPulse Position Modulation	3 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
Sensus Water meter (Acquisition units)	These are samples from the Sensus Water meters. They are a FHSS ASKAmplitude-Shift Keying encoded data transmission for purposes of providing municipalities water meter telemetry (for billing how much water you use).	902 MHzMegaHertz (MHz) 10^6 Hz — 927 MHzMegaHertz (MHz) 10^6 Hz		ASKAmplitude-Shift Keying, FHSS	175 MHzMegaHertz (MHz) 10^6 Hz	Worldwide	—
SiriusXM Satellite Radio	SiriusXM Satellite Radio: Terrestrial Repeater Signal	2,332.5 MHzMegaHertz (MHz) 10^6 Hz — 2,345 MHzMegaHertz (MHz) 10^6 Hz	RAW	OFDMOrthogonal Frequency-Division Multiplexing, PSKPhase-Shift Keying	12.5 MHzMegaHertz (MHz) 10^6 Hz	United States
Total Access Communication System (TACS)	A first generation analogue mobile cellular system which operated in the United Kingdom and a handful of other countries in Europe. It is also the EU's form of AMPS.	872 MHzMegaHertz (MHz) 10^6 Hz — 960 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	FMFrequency Modulation, FSKFrequency-Shift Keying	25 kHzKiloHertz (kHz) 10^3 Hz	Europe
UHF Vehicle Location System	LTR Passport is a type of control channel (unlike the standalone LTR that doesnt have one) which consists of multiple radio repeater sites linked together to form a wide-area radio dispatch network.	400 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 900 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	PSKPhase-Shift Keying	5.5 kHzKiloHertz (kHz) 10^3 Hz	United States
UK AM Data System (UK-AMDS)	UK AMAmplitude Modulation Data System (UK-AMDS) was developed by BBC Research and Development in 1984 as a way to transmit low bitrate data on BBC Radio 4's LFLow Frequency (30-300 kHz) AMAmplitude Modulation carrier. Elements of this system were adopted into ETSIEuropean Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards.'s AMSS.	198 kHzKiloHertz (kHz) 10^3 Hz	SSBSingle-sideband modulation	AMAmplitude Modulation, PSKPhase-Shift Keying	85 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).	United Kingdom
Vehicle Counting System	Data transmitted from a vehicle counting system installed in car parks. The data is frequency hopping over 10 MHzMegaHertz (MHz) 10^6 Hz.	915 MHzMegaHertz (MHz) 10^6 Hz — 925 MHzMegaHertz (MHz) 10^6 Hz	RAW	FSKFrequency-Shift Keying	10 MHzMegaHertz (MHz) 10^6 Hz	Australia	—
WiMAX	WiMAX is a family of of wireless broadband communication standards based on the IEEE 802.16 set of standards, which provide physical layer (PHY) and media access control (MAC) options.			OFDMOrthogonal Frequency-Division Multiplexing, OFDMA	1.25 MHzMegaHertz (MHz) 10^6 Hz — 20 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
Wireless Temperature Sensor	The freezer temperature is requested by a master at regular intervals, and the slave attached to a freezer responds. The communication format appears to be a variant of chirp spread spectrum, (although the spectrum it consumes is quite narrow at ~150 kHzKiloHertz (kHz) 10^3 Hz).	434 MHzMegaHertz (MHz) 10^6 Hz	Chirp Spread Spectrum		150 kHzKiloHertz (kHz) 10^3 Hz	Australia