Signal Name
stringlengths 3
66
| Description
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908
⌀ | Frequency
stringlengths 6
27
⌀ | Mode
stringclasses 25
values | Modulation
stringlengths 2
27
⌀ | Bandwidth
stringlengths 4
19
⌀ | Location
stringclasses 31
values | Sample Audio
stringclasses 2
values | Waterfall image
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|---|---|---|---|---|---|---|---|---|
VHF Omnidirectional Range (VOR) | A type of radio navigation system used by aircraft. It is distinctive in that the center frequency is flanked by two FM waves. | 108 MHz — 117.95 MHz | NFM | AM, FM | 21 kHz | Worldwide | null | null |
Vaisala RS41-SG Weather Balloon (Radiosonde) | Weather balloon (radiosonde) telemetry data. | 400 MHz — 406 MHz | NFM | GFSK | 4.8 kHz | Worldwide | null | null |
Vaisala RS92-SGP Weather Balloon (Radiosonde) | Weather balloon (radiosonde) telemetry data. | 400.15 MHz — 405.99 MHz | NFM | GFSK | 10 kHz | Worldwide | null | null |
Vehicle Counting System | Data transmitted from a vehicle counting system installed in car parks. The data is frequency hopping over 10 MHz. | 915 MHz — 925 MHz | RAW | FSK | 10 MHz | Australia | — | null |
Vietnamese Siren Jammer | Used to interrupt AM boardcast stations such as Radio Free Asia, Radio Đáp Lời Song Núi as well as Radio Sweden. | 1 MHz — 20 MHz | USB | Unknown | 2.7 MHz | Worldwide | null | null |
Visonic MCT-201 | MCT-201 is a Miniature Pendant PowerCode Wireless Transmitter by Visonic. It is designed for emergency and control applications in wireless security systems, and home automation and remote control systems. | 315 MHz — 868 MHz | USB | PWM | 5 kHz | Worldwide | null | null |
WEFAX | Radiofax (Also known as Weatherfax, HF-FAX, WEFAX, and Weather Facsimile) is a slow scan analog image transmission mode used for the transmission of weather charts and meteorological reports. | 3 MHz — 30 MHz | USB | FM | 3 kHz | Worldwide | null | null |
WSPR | Weak Signal Propagation Reporter. | 136 kHz — 1,296.5 MHz | USB | MFSK | 6 Hz | Worldwide | null | null |
WWVB | WWVB is the lowest frequency time signal in the USA. | 60 kHz | CW | AM | 1 Hz | United States | null | null |
Wireless Hydrophone System (WHS) | null | 434.225 MHz | RAW | PPM | null | Europe | null | null |
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 kHz). | 434 MHz | Chirp Spread Spectrum | null | 150 kHz | Australia | null | null |
XMPP trials | XMPP (Extensible Messaging and Presence Protocol) on shortwave is used by the military and are known for using MIL 188-110A Serial HF waveform and 6-bit code clear text with dual bursts of STANAG-5439 and STANAG-5066 as for XMPP Multi-User Chat (MUC) messages | 2 MHz — 7.8 MHz | USB | PSK, QAM | 34 kHz | Worldwide | null | null |
Yaesu System Fusion | System Fusion is Yaesu's digital voice/data protocol for amateur radio, using the AMBE+2 vocoder on a C4FM signal. | 144 MHz — 450 MHz | FM | 4FSK | 16 kHz | Worldwide | null | null |
Électricité de France HNZ | Electrical substation SCADA protocol used by EDF (Électricité de France). | 68.5 MHz — 73.3 MHz | FM | AFSK | 8 kHz | France | null | null |