Ultra High Frequency (UHF)

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Click the name of a signal to see more detailed information, possible decoding, and additional sound and waterfall samples

Color Legend
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
2G CDMA (IS-95) 2G CDMACode Division Multiple Access, also known as IS-95, is a cellular standard. 850 MHzMegaHertz (MHz) 10^6 Hz AMAmplitude Modulation QPSKQuadrature Phase-Shift Keying (2 bits per symbol) 1.228 MHzMegaHertz (MHz) 10^6 Hz Is95 narrow.PNG
3G WCDMA CDMA2000, 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 — 2,000 MHzMegaHertz (MHz) 10^6 Hz RAW, AMAmplitude Modulation QAMQuadrature Amplitude Modulation, QPSKQuadrature Phase-Shift Keying (2 bits per symbol), CDMACode Division Multiple Access 1.25 MHzMegaHertz (MHz) 10^6 Hz — 3.9 MHzMegaHertz (MHz) 10^6 Hz 3gwcdma 1936 iqremoval sigidwiki.PNG
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. 700 MHzMegaHertz (MHz) 10^6 Hz — 2,200 MHzMegaHertz (MHz) 10^6 Hz RAW OFDMOrthogonal Frequency-Division Multiplexing, PSKPhase-Shift Keying, QAMQuadrature Amplitude Modulation MHzMegaHertz (MHz) 10^6 Hz — 20 MHzMegaHertz (MHz) 10^6 Hz Worldwide LTE Thumb.jpg
AFSK Paging Link It is easier to transmit the FSKFrequency-Shift Keying pager signal to the transmitter site as AFSKAudio Frequency-Shift Keying. It is changed to POCSAG format when re-transmitted. 72 MHzMegaHertz (MHz) 10^6 Hz — 928 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation AFSKAudio Frequency-Shift Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide AFSKPaging Waterfallthmb.jpg
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 SAT 40.jpg
ATSC Broadcast Advanced Television Systems Committee Television. 8VSB Modulation 54 MHzMegaHertz (MHz) 10^6 Hz — 700 MHzMegaHertz (MHz) 10^6 Hz RAW 8VSB MHzMegaHertz (MHz) 10^6 Hz North America ATSCthmb.jpg
Automatic Dependent Surveillance-Broadcast (ADS-B) ADS-B is used by aircraft as an alternative to secondary radar. It broadcasts GPS position (latitude, longitude), pressure altitude, callsign, as well as track and ground speed separated into messages carrying 10 bytes of data each. 1,090 MHzMegaHertz (MHz) 10^6 Hz RAW PPMPulse Position Modulation 50 kHzKiloHertz (kHz) 10^3 Hz Worldwide ADS-B.jpg
Automatic Picture Transmission (APT) Automatic Picture Transmission (APT), also known as NOAA-GEOSAT, is an analog image transmission mode used to by the NOAA weather satellites and some Russian weather satellites to transmit satellite weather photos. 137 MHzMegaHertz (MHz) 10^6 Hz — 138 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation AMAmplitude Modulation 34 kHzKiloHertz (kHz) 10^3 Hz Worldwide APT NOAA.jpg
Automatic Transmitter Identification System (ATIS) ATIS systems are identification tags used by inland commercial waterway traffic on rivers in Europe. The FSKFrequency-Shift Keying burst is appended at the end of every voice transmission by the vessel operator. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation FSKFrequency-Shift Keying 12 kHzKiloHertz (kHz) 10^3 Hz Europe ATIS voice samp.jpg
Binary Interchange of Information and Signaling (BIIS) BIIS (also known as BIIS 1200) is an ETSIEuropean Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards. protocol for a digital selective calling method with the added benefit of extended capability of transmitting data that exceeds what could be done with old 5-tone analog calling methods like CCIRComité Consultatif International pour la Radio (Predecessor of the ITU-R) and ZVEI. 35 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation FFSKFast Frequency-Shift Keying kHzKiloHertz (kHz) 10^3 Hz Europe BIISthmb.jpg
CCIR Selcall CCIRComité Consultatif International pour la Radio (Predecessor of the ITU-R) selcall consists of CCIRComité Consultatif International pour la Radio (Predecessor of the ITU-R)-1, CCIRComité Consultatif International pour la Radio (Predecessor of the ITU-R)-2, and PCCIR, which are 5-tone selcall modes for VHFVery High Frequency (30-300 MHz)/UHFUltra High Frequency (300-3000 MHz) radios. CCIRComité Consultatif International pour la Radio (Predecessor of the ITU-R)-1 and CCIRComité Consultatif International pour la Radio (Predecessor of the ITU-R)-2 only differ in the tone duration, and PCCIR only differs in the group, reset, and repeat tone frequencies. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation MFSKMultiple Frequency Shift-Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide Ccir-1 5-tone.jpg
CCITT CCITT is a 5-tone selcall system for VHFVery High Frequency (30-300 MHz)/UHFUltra High Frequency (300-3000 MHz) radios. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation MFSKMultiple Frequency Shift-Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide Ccitt 5-tones.jpg
CDMA2000 (3G physical layer) CDMACode Division Multiple Access is another standard for Cellular Devices with GSM being the first standard. 850 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 Asia CDMA.jpg
California Smart-Meter This is a signal from a Californian Electricity 'Smart Meter'. Each house is now fitted with one of these, and they are strong - typically 50 dBThe decibel (dB) is a logarithmic unit used to express the ratio of two values of a physical quantity, here the strength of a received signal. above the atmospheric noise level. 902 MHzMegaHertz (MHz) 10^6 Hz — 928 MHzMegaHertz (MHz) 10^6 Hz 15 kHzKiloHertz (kHz) 10^3 Hz United States Open-Way-Centron Smart-Meter Waterfallthmb.png
CompuLert Low speed FSKFrequency-Shift Keying telemetry to monitor and control warning sirens that are used to warn the public of threats such as tsunamis, severe weather, chemical spills and civil emergencies. 453.375 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation FSKFrequency-Shift Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide Compulert.jpg
Continuous Tone-Coded Squelch System (CTCSS) CTCSS, also known as Private Line and Channel Guard, is a low continuous tone transmitted on NFMNarrowband Frequency Modulation voice transmissions that is used to squelch and manage transmissions on a given frequency. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation CWContinuous Wave kHzKiloHertz (kHz) 10^3 Hz — 30 kHzKiloHertz (kHz) 10^3 Hz Worldwide CTCSS vce.jpg
Digital Audio Broadcasting (DAB) A type of digital broadcast radio signal, containing multiple digital radio stations in the signal. 174.928 MHzMegaHertz (MHz) 10^6 Hz — 1,490.625 MHzMegaHertz (MHz) 10^6 Hz RAW OFDMOrthogonal Frequency-Division Multiplexing 1.537 MHzMegaHertz (MHz) 10^6 Hz Worldwide No Audio File DABthmb.jpg
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 kHzKiloHertz (kHz) 10^3 Hz United States MDT data terminals.jpg
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 DECT waterfall.jpg
Digital Mobile Radio (DMR) Digital Mobile Radio (DMR) is an open digital mobile radio standard defined by ETSIEuropean Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards. and used in commercial products around the world. Mostly used by private network and local police, can be encrypted. Used in MOTOTRBO products. 136 MHzMegaHertz (MHz) 10^6 Hz — 860 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation 4FSK 12.5 kHzKiloHertz (kHz) 10^3 Hz Worldwide DMR.jpg
Digital Private Mobile Radio (dPMR) dPMR is an open, non-proprietary trunked radio standard developed by ETSIEuropean Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards., published under ETSIEuropean Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards. TS 102 658. Supports both data and digital voice transmission. 149.019 MHzMegaHertz (MHz) 10^6 Hz — 446.2 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation 4FSK 6.25 kHzKiloHertz (kHz) 10^3 Hz Worldwide DPMR.jpg
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. 474 MHzMegaHertz (MHz) 10^6 Hz — 786 MHzMegaHertz (MHz) 10^6 Hz RAW QAMQuadrature Amplitude Modulation, OFDMOrthogonal Frequency-Division Multiplexing MHzMegaHertz (MHz) 10^6 Hz — 8 MHzMegaHertz (MHz) 10^6 Hz Worldwide DVB-T.PNG
Distress Radiobeacon (Digital) Digital Distress Radiobeacons (EPIRB's, PLB's and ELT's) are emergency radio beacons used for search and rescue operations to locate a vessel, plane, or person in distress. 406 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation PSKPhase-Shift Keying 1.4 kHzKiloHertz (kHz) 10^3 Hz Worldwide Epirb.jpg
Distributed Power Unit (DPU) Distributed power refers to the placing of an extra locomotive at an intermediate point in the middle section of a train. This locomotive unit is remotely controlled from the lead locomotive, and greatly increases both the pulling and stopping power of longer trains. 457.925 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation kHzKiloHertz (kHz) 10^3 Hz Worldwide DPU.jpg
Dual Tone Multi Frequency (DTMF) DTMF is a signaling mode used for a variety of purposes. It's most known for telephony dialing, but is in use for many different applications such as DTMF paging for DTMF-enabled VHFVery High Frequency (30-300 MHz)/UHFUltra High Frequency (300-3000 MHz) radios. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation MFSKMultiple Frequency Shift-Keying 3.3 kHzKiloHertz (kHz) 10^3 Hz Worldwide DTMF tones.png
ECG Telemetry This is ECG Telemetry from a pacemaker. 403.959 MHzMegaHertz (MHz) 10^6 Hz FMFrequency Modulation FSKFrequency-Shift Keying kHzKiloHertz (kHz) 10^3 Hz Australia Beeper.png
EEA EEA is a 5-tone selcall mode defined by the Electronic Engineering Association in the United Kingdom. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation MFSKMultiple Frequency Shift-Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide EEA 5-tone.jpg
EIA EIA is a 5/6-tone selcall mode defined by the Electronics Industries Association in the United States. Also known as Motorola MetroPage. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation MFSKMultiple Frequency Shift-Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide EIA 5-tone.jpg
EURO EURO is a 5-tone selcall mode used in VHFVery High Frequency (30-300 MHz)/UHFUltra High Frequency (300-3000 MHz) radios. Also known as EuroSignal. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation MFSKMultiple Frequency Shift-Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide Euro 5-tone.png
End of Train Device (EOTD) Transmits train telemetry such as brake status and accidental seperation information to the head locomotive. 427.938 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation kHzKiloHertz (kHz) 10^3 Hz Worldwide EOTthmb.jpg
Enhanced Digital Access Communications System (EDACS) EDACS is a trunked radio system developed by General Electric and Ericsson. EDACS was invented by General Electric in the mid-80s and is currently owned by Harris Corporation. Harris has announced that EDACS systems will no longer be supported by 2017. 160 MHzMegaHertz (MHz) 10^6 Hz — 941 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation GFSKGaussian Frequency-Shift Keying 12.5 kHzKiloHertz (kHz) 10^3 Hz — 25 kHzKiloHertz (kHz) 10^3 Hz United States EDACS96 Waterfallthmb.png
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 PAMPulse Amplitude Modulation 25 kHzKiloHertz (kHz) 10^3 Hz Europe ERMES.jpg
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. 169 MHzMegaHertz (MHz) 10^6 Hz — 929 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation FSKFrequency-Shift Keying, 4FSK kHzKiloHertz (kHz) 10^3 Hz Worldwide FLEX.jpg
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 FSK441.jpg
Global System for Mobile Communications (GSM) GSM is a 2G digital cellular network standard developed by ETSIEuropean Telecommunications Standards Institute. An independent, not-for-profit, standardization organization in the telecommunications industry in Europe, developing global telecommunications standards.. As of 2014 it has become the default global standard for mobile communications. 450 MHzMegaHertz (MHz) 10^6 Hz — 1,800 MHzMegaHertz (MHz) 10^6 Hz RAW GMSKGaussian Minimum-Shift Keying 200 kHzKiloHertz (kHz) 10^3 Hz Worldwide GSMthmb.jpg
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 Golay.jpg
Graw DFM-06 Weather Balloon (Radiosonde) The DFM-06 is a standard radiosonde for most applications. It is perfectly suited for synoptic observations or military applications. 400.01 MHzMegaHertz (MHz) 10^6 Hz — 405.99 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation FSKFrequency-Shift Keying Europe Graw.jpg
HC-265 Voice Scrambler HC-265 is a Voice Scrambling mode developed by Hagelin Crypto for their HC-265 CRYPTOCOM secure voice unit. 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 2.25 kHzKiloHertz (kHz) 10^3 Hz — 3 kHzKiloHertz (kHz) 10^3 Hz Worldwide HC 265.jpg
HORYU-4 Telemetry 437.375 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) Worldwide HORYU-4 Telemetry Waterfall.jpg
ISM Band Weather sensor Data returned from a consumer weather sensor using the AlectoV1 protocol. 433 MHzMegaHertz (MHz) 10^6 Hz AMAmplitude Modulation 4.4 kHzKiloHertz (kHz) 10^3 Hz Worldwide Alecto wxthmb.png
ISM Band device An ISM band device such as a power meter or a wireless doorbell. 315 MHzMegaHertz (MHz) 10^6 Hz — 920 MHzMegaHertz (MHz) 10^6 Hz AMAmplitude Modulation, NFMNarrowband Frequency Modulation ASKAmplitude-Shift Keying, OOKOn-Off Keying Modulation, FSKFrequency-Shift Keying 20 kHzKiloHertz (kHz) 10^3 Hz Worldwide ISMBandPowerMeter Waterfallthmb.jpg
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 Aero.jpg
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.jpg
Inmarsat-C TDM Inmarsat C provides two-way data and messaging communication services to and from virtually anywhere in the world. The low-cost terminals and antennas are small enough to be fitted to any size of ship. 1,537.7 MHzMegaHertz (MHz) 10^6 Hz — 1,539.685 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 2.5 kHzKiloHertz (kHz) 10^3 Hz Worldwide Inmarsat TDM NCS.jpg
Inmarsat-D/D+ Downlink Inmarsat D+ (and it's predecessor, Inmarsat D) is Inmarsat's satellite paging system. The main use of this technology nowadays is 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 Inmarsat D.jpg
Integrated Digital Enhanced Network (iDEN) iDEN is a TDMATime Division Multiple Access-based digital wireless standard developed by Motorola. It is a type of trunked radio with cellular phone benefits. 806 MHzMegaHertz (MHz) 10^6 Hz — 869 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation QAMQuadrature Amplitude Modulation, TDMATime Division Multiple Access 18.5 kHzKiloHertz (kHz) 10^3 Hz Worldwide IDEN image.jpg
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), 64-QAMQuadrature Amplitude Modulation 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 IridiumTDMA.png
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) MHzMegaHertz (MHz) 10^6 Hz Worldwide LTE Uplink.PNG
Link-11 (UHF) This is the UHFUltra High Frequency (300-3000 MHz) band variant of Link-11, which is transmitted on a FMFrequency Modulation carrier. The FMFrequency Modulation-demodulated baseband is identical to the HFHigh Frequency (3-30 MHz) Link-11 waveform. 225 MHzMegaHertz (MHz) 10^6 Hz — 399.975 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation PSKPhase-Shift Keying 30 kHzKiloHertz (kHz) 10^3 Hz Worldwide Link-11 UHF.jpg
Logic Trunked Radio (LTR) Logic Trunked Radio NFMNarrowband Frequency Modulation
Low Rate Picture Transmission (LRPT) The Low Rate Picture Transmission (LRPT) is a digital transmission system, commonly transmitted by METEOR-M satellites, used to deliver weather images and data. 137 MHzMegaHertz (MHz) 10^6 Hz — 138 MHzMegaHertz (MHz) 10^6 Hz RAW QPSKQuadrature Phase-Shift Keying (2 bits per symbol) 120 kHzKiloHertz (kHz) 10^3 Hz Worldwide LRPTWaterfall.jpg
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 Mpp4800 waveform.PNG
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 Mobitex8000.jpg
MODAT MODAT is a 7-tone Automatic Number Identification (ANI) status system used by handheld radios. It provides unit ID and emergency statuses to receiving radio sets when transmitted. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation MFSKMultiple Frequency Shift-Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide MODAT.png
MPT 1327 MPT1327 (Ministry of Posts and Telegraph 1327) is a signaling protocol standard for analog trunked radio 162.5 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation FFSKFast Frequency-Shift Keying 10 kHzKiloHertz (kHz) 10^3 Hz — 25 kHzKiloHertz (kHz) 10^3 Hz Worldwide MPT1327.jpg
Meteosat WEFAX Meteosat WEFAX is a WEFAX used to transmit satellite images via Meteosat Satellites. WEFAX was introduced with the first Meteosat in 1977. 1,691 MHzMegaHertz (MHz) 10^6 Hz FMFrequency Modulation AMAmplitude Modulation, FMFrequency Modulation Worldwide
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. MHzMegaHertz (MHz) 10^6 Hz — 930 MHzMegaHertz (MHz) 10^6 Hz CWContinuous Wave OOKOn-Off Keying Modulation HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). Worldwide CW.jpg
Motorola Type II Radio trunking control channel. 700 MHzMegaHertz (MHz) 10^6 Hz — 960 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation kHzKiloHertz (kHz) 10^3 Hz Worldwide Moto.jpg
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 Multitone Pager.jpg
NATEL NATEL is a 5-tone selcall mode defined by Scandinavian National Telephone recommendations. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation MFSKMultiple Frequency Shift-Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide Natel 5-tone.png
NFM Voice Used in analog walkie-talkies and communication systems. 27 MHzMegaHertz (MHz) 10^6 Hz — 864 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation FMFrequency Modulation kHzKiloHertz (kHz) 10^3 Hz — 30 kHzKiloHertz (kHz) 10^3 Hz Worldwide NFMvoice.jpg
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 MHzMegaHertz (MHz) 10^6 Hz Worldwide No Audio File NTSC.jpg
Next Generation Digital Narrowband (NXDN) NXDN is a digital narrowband trunked radio protocol developed by ICOM Inc. and JVC KENVOOD Co. The NXDN protocol is used in commercial, business & industry, transport and Public Safety professional radio systems. NXDN has recently been recognized by the ITU as an international digital radio communications standard. 136 MHzMegaHertz (MHz) 10^6 Hz — 520 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation C4FMContinuous 4-Level Frequency Modulation 6.25 kHzKiloHertz (kHz) 10^3 Hz — 12.5 kHzKiloHertz (kHz) 10^3 Hz Worldwide NXDN.jpg
Nissan 2012 Wireless Fob Nissan 2012 version of their Wireless Fob, FCC ID CWTWB1U840. 314.975 MHzMegaHertz (MHz) 10^6 Hz RAW FSKFrequency-Shift Keying 100 kHzKiloHertz (kHz) 10^3 Hz Worldwide Nissan 2012.jpg
Nissan Car Key Wireless entry rolling code car key. 301.5 MHzMegaHertz (MHz) 10^6 Hz — 433 MHzMegaHertz (MHz) 10^6 Hz AMAmplitude Modulation 40 kHzKiloHertz (kHz) 10^3 Hz Worldwide NissanCarFob Waterfallthmb.png
PACKET PACKET, also known as FSK300, AX25, and X25, is a packet based protocol derived from AX.25 and HDLC computer network protocols. Packet radio is a synchronous system in which data is transmitted in ASCII character packets. 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 PACKET 300.jpg
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 MHzMegaHertz (MHz) 10^6 Hz — 8 MHzMegaHertz (MHz) 10^6 Hz Worldwide PAL.jpg
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 kHzKiloHertz (kHz) 10^3 Hz Worldwide POCSAG Waterfallthmb.png
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 BPSKthumb.png
Police Idling Walkie Talkie Radio Signal I found out what Unknown 453 was, the one that I posted a few weeks ago, it is a police idling signal, apparently the police signal belongs to the remote SDR I was listening to, but I got my own SDR now. So yeah, it is an idling signal for a police walkie-talkie 453.6 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). Police idlingthmb.jpg
Project 25 (P25) Project 25 (P25 or APCO-25) is a trunked radio standard developed by The Association of Public Safety Communications Officials International (APCO-25) for use with public safety organizations around the world. 136 MHzMegaHertz (MHz) 10^6 Hz — 860 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation PSKPhase-Shift Keying, C4FMContinuous 4-Level Frequency Modulation 12.5 kHzKiloHertz (kHz) 10^3 Hz Worldwide P25.jpg
Pursuit Wireless Car Key Pursuit series wireless car alarm entry key, for use on vehicles equipped with Pursuit Series Car Alarm System. 301.5 MHzMegaHertz (MHz) 10^6 Hz — 434 MHzMegaHertz (MHz) 10^6 Hz AMAmplitude Modulation AMAmplitude Modulation 40 kHzKiloHertz (kHz) 10^3 Hz Worldwide 1995 nissan key.jpg
Radio Data Link Access Protocol (RD-LAP) Used in many formats of 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. usage, as well as some ARDIS and DataTAC formats including some Gas companies (this sample for example), Police departments, fire departments, financial companies. It is still around, just not used as much as P25 systems are being used in the 850 MHzMegaHertz (MHz) 10^6 Hz band, and the DataTAC being replaced by higher speeds of the modern-day wireless networks... 150 MHzMegaHertz (MHz) 10^6 Hz — 850 MHzMegaHertz (MHz) 10^6 Hz FMFrequency Modulation PSKPhase-Shift Keying 10 kHzKiloHertz (kHz) 10^3 Hz Worldwide Grand rapids RD-LAP1.PNG
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 ReFLEX.jpg
SIGFOX SIGFOX is a IoT 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 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). Worldwide 3 SIGFOX.jpg
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 kHzKiloHertz (kHz) 10^3 Hz France Fouine91 MPT1327-Like.jpg
Supervisory control and data acquisition (SCADA) Supervisory control and data acquisition (SCADA) is a control system architecture that uses computers, networked data communications (such as the AFSKAudio Frequency-Shift Keying blips you hear) and graphical user interfaces for high-level process supervisory management, but uses other peripheral devices such as programmable logic controllers and discrete PID controllers to interface to the process plant or machinery. 450 MHzMegaHertz (MHz) 10^6 Hz — 950 MHzMegaHertz (MHz) 10^6 Hz FMFrequency Modulation FSKFrequency-Shift Keying 12 kHzKiloHertz (kHz) 10^3 Hz SCADA waterfall.PNG
Terrestrial Trunked Radio (TETRA) TETRA is a professional mobile radio and two-way transceiver (walkie-talkie) specification 380 MHzMegaHertz (MHz) 10^6 Hz — 430 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation PSKPhase-Shift Keying 25 kHzKiloHertz (kHz) 10^3 Hz Europe TETRA.jpg
Tetrapol Tetrapol is a digital professional mobile radio standard for digital voice and data communication used by public safety and military throughout Europe. Tetrapol was originally developed by Matra Communication (Currently part of EADS/Airbus Group) in France in the 1980's. 370 MHzMegaHertz (MHz) 10^6 Hz — 400 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation GMSKGaussian Minimum-Shift Keying 10 kHzKiloHertz (kHz) 10^3 Hz — 12.5 kHzKiloHertz (kHz) 10^3 Hz Europe Tetrapolnew.jpg
Tire Pressure Monitoring System (TPMS) Signal is from a Chrysler TPMS (Tire-Pressure Monitoring System) sensor. 315 MHzMegaHertz (MHz) 10^6 Hz — 433 MHzMegaHertz (MHz) 10^6 Hz AMAmplitude Modulation Worldwide TPMS.png
Toyota Car Key Wireless entry rolling code car key. 315 MHzMegaHertz (MHz) 10^6 Hz — 433 MHzMegaHertz (MHz) 10^6 Hz AMAmplitude Modulation 40 kHzKiloHertz (kHz) 10^3 Hz Worldwide ToyotaCarFob Waterfall.png
VDEW VDEW is a 5-tone selcall mode defined by the Vereinigung Deutscher Elektrizitaetswerke in Germany. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation MFSKMultiple Frequency Shift-Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide VDEW 5-tone.jpg
Vaisala RS41-SG Weather Balloon (Radiosonde) Weather balloon (radiosonde) telemetry data. 400 MHzMegaHertz (MHz) 10^6 Hz — 410 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation GFSKGaussian Frequency-Shift Keying 4.8 kHzKiloHertz (kHz) 10^3 Hz Worldwide Rs41 radiosonde wf.png
Vaisala RS92-KL Weather Balloon (Radiosonde) RS92-KL and RS92-K are analog radiosondes built by Vaisala in Finland. These radiosondes are used for weather balloons. 400 MHzMegaHertz (MHz) 10^6 Hz — 406 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation MFSKMultiple Frequency Shift-Keying 200 kHzKiloHertz (kHz) 10^3 Hz Worldwide RS92-KL.jpg
Vaisala RS92-SGP Weather Balloon (Radiosonde) Weather balloon (radiosonde) telemetry data. 400.15 MHzMegaHertz (MHz) 10^6 Hz — 405.99 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation GFSKGaussian Frequency-Shift Keying 10 kHzKiloHertz (kHz) 10^3 Hz Worldwide VaisalaRS92SGP.png
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 Flinders Uni Vehicle Counting System Waterfall.PNG
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 Waterfall spectrum of Flinders Uni freezer communication.PNG
XM 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 North America XM sattelite radio.jpg
ZVEI Selcall ZVEI is a family of selcall modes defined by the Zentralverband der Electrotechnischen Industrie in Germany. Selcall modes include ZVEI-1, ZVEI-2, ZVEI-3, PZVEI, DZVEI, and PDZVEI. 30 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz NFMNarrowband Frequency Modulation MFSKMultiple Frequency Shift-Keying kHzKiloHertz (kHz) 10^3 Hz Worldwide Zvei-1 5-tone.jpg

Pages in category "UHF"

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