EURO

EURO

Frequencies	30 MHz,800 MHz
Frequency Range	30 MHz - 800 MHz
Mode	NFM
Modulation	MFSK
ACF	—
Emission Designator	—
Bandwidth	5 kHz
Location	Worldwide
Short Description	EURO is a 6/7-tone selcall mode used in VHF/UHF radios. Also known as EuroSignal.
I/Q Raw Recording	—
Audio Sample

EURO is a 6/7-tone selcall mode used in VHFVery High Frequency (30-300 MHz)/UHFUltra High Frequency (300-3000 MHz) radios. Also known as EuroSignal.

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.

EURO has 16 tones to choose from, but can send at most 7 tones at a time. EURO commonly sends 6-7 tones per burst. Each tone has a duration of 100 msmilliseconds (.001 of a second) per tone. The bursts transmit right before a radio transmission.

Samples

EURO Full Range	EURO 5-Tones

Decoding Software

Hobby Level Software

• Sorcerer

Professional Software

• Rohde&Schwarz CA100

Additional Links

• shoc Database: EURO
• WAVECOM Database: EURO
• NumberOddies.nl Faq, Page 32
• Connect Systems Incorporated Programming Manual with EURO
• Tone Signaling Charts