Signal Name
stringlengths 3
66
| Description
stringlengths 31
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
float64 |
|---|---|---|---|---|---|---|---|---|
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 |
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