Super High Frequency (SHF)

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

SHF encompasses frequencies from 3 GHzGigaHertz (GHz) 10^9 Hz to 300 GHzGigaHertz (GHz) 10^9 Hz

Signal Name	Description	Frequency	Mode	Modulation	Bandwidth	Location	Sample Audio	Waterfall image
5G 'New Radio' Cellular Radio - 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	CP-OFDMOrthogonal Frequency-Division Multiplexing	QPSKQuadrature Phase-Shift Keying (2 bits per symbol), 16QAM, 64QAM, 256QAM	5 MHzMegaHertz (MHz) 10^6 Hz — 400 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
5G (NR) New Radio Uplink	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	CP-OFDMOrthogonal Frequency-Division Multiplexing	QPSKQuadrature Phase-Shift Keying (2 bits per symbol), 16QAM, 64QAM, 256QAM	5 MHzMegaHertz (MHz) 10^6 Hz — 400 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
Digital Video Broadcasting — Satellite (DVB-S)	DVB‑S and DVB‑S2 are both satellite broadcasting standards, but DVB‑S2 is a more advanced and efficient evolution of the original system.	10,700 MHzMegaHertz (MHz) 10^6 Hz — 12,700 MHzMegaHertz (MHz) 10^6 Hz	ACM/VCM	QPSKQuadrature Phase-Shift Keying (2 bits per symbol), 8PSK8-Phase Phase-Shift Keying (3 bits per symbol), 16APSK, 32APSK	100 kHzKiloHertz (kHz) 10^3 Hz — 72 MHzMegaHertz (MHz) 10^6 Hz	Europe, Asia
JT4	JT4 is a 4-FSKFrequency-Shift Keying extreme weak-signal mode which is designed especially for Earth-Moon-Earth communications. It is part of the WSJT-X software.		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	17 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). — 949 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).	Worldwide
LRS restaurant pager	LRS restaurant pagers operate in the PMR446 band, most commonly on 446.15625 MHzMegaHertz (MHz) 10^6 Hz. The system uses narrowband FMFrequency Modulation (NFMNarrowband Frequency Modulation) modulation with a 12.5 kHzKiloHertz (kHz) 10^3 Hz channel bandwidth, transmitting short data bursts that activate individual pagers.	446 MHzMegaHertz (MHz) 10^6 Hz	NFMNarrowband Frequency Modulation	NFMNarrowband Frequency Modulation	12.5 kHzKiloHertz (kHz) 10^3 Hz	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.	3 kHzKiloHertz (kHz) 10^3 Hz — 250,000 MHzMegaHertz (MHz) 10^6 Hz	CWContinuous Wave	OOKOn-Off Keying Modulation		Worldwide
Radio-relay link	A radio‑relay (microwave) link using small parabolic antennas is a short‑range, high‑capacity point‑to‑point microwave connection commonly deployed when fiber is unavailable or too expensive to build.	6,000 MHzMegaHertz (MHz) 10^6 Hz — 38,000 MHzMegaHertz (MHz) 10^6 Hz	RAW	4FSK4-Level Frequency Shift Keying to 2048QAM	3.5 MHzMegaHertz (MHz) 10^6 Hz — 800 MHzMegaHertz (MHz) 10^6 Hz	Worldwide
TV Satellite Telemetry	These signals are narrowband technical carriers transmitted by the Thor‑5 satellite in the Ku‑band, close to 11700 MHzMegaHertz (MHz) 10^6 Hz. They are part of the satellite’s TT&C (Telemetry, Tracking and Command) and beacon system.	11,700 MHzMegaHertz (MHz) 10^6 Hz — 11,702 MHzMegaHertz (MHz) 10^6 Hz		CWContinuous Wave, FSKFrequency-Shift Keying	200 kHzKiloHertz (kHz) 10^3 Hz	Europe