Selcall
Sign in to saveSelcall (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.
~9 min read
Encyclopedic overview
10 sectionsContents
- Details
- Tone Sets
- Tone Periods
- Repeat Tone
- Implementations
- Automatic Number Identification
- Status Gap
- Proprietary Implementations
- As push-to-talk identifier
- External links
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.
Selcall is a radio signalling protocol mainly in use in Europe, Asia, Australia and New Zealand, and continues to be incorporated in radio equipment marketed in those areas.
Excerpted from Wikipedia’s “Selcall” article, available under the CC BY-SA 4.0 licence.