ZVEI Selcall

ZVEI Selcall
Frequencies	30 MHzMegaHertz (MHz) 10^6 Hz30,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). ; 30,000 kHzKiloHertz (kHz) 10^3 Hz,800 MHzMegaHertz (MHz) 10^6 Hz800,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). ; 800,000 kHzKiloHertz (kHz) 10^3 Hz30,000 kHzKiloHertz (kHz) 10^3 Hz ; 30 MHzMegaHertz (MHz) 10^6 Hz 800,000 kHzKiloHertz (kHz) 10^3 Hz ; 800 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range	30 MHzMegaHertz (MHz) 10^6 Hz30,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). ; 30,000 kHzKiloHertz (kHz) 10^3 Hz - 800 MHzMegaHertz (MHz) 10^6 Hz800,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). ; 800,000 kHzKiloHertz (kHz) 10^3 Hz
Mode	NFMNarrowband Frequency Modulation
Modulation	MFSKMultiple Frequency Shift-Keying
ACFAutoCorrelation Function	—
Bandwidth	5 kHzKiloHertz (kHz) 10^3 Hz5,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz). ; 0.005 MHzMegaHertz (MHz) 10^6 Hz 5 kHzKiloHertz (kHz) 10^3 Hz ; 0.005 MHzMegaHertz (MHz) 10^6 Hz 5 kHzKiloHertz (kHz) 10^3 Hz ; 0.005 MHzMegaHertz (MHz) 10^6 Hz
Location	Worldwide
Short Description	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.
I/Q Raw Recording	—
Audio Sample

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. Each varies only in the frequency digit encoding.

Selcall (selective calling) is a type of squelch protocol used in radio communications systems, in which transmissions include a brief burst of sequential audio tones. Receivers that are set to respond to the transmitted tone sequence will open their squelch, while others will remain muted.

The different paramaters for each mode can be seen in the following table. Tone width is how long each tone lasts.