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
Article
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.