If you use a scanner to monitor our system, you may run into a scenario where you’re expecting to hear audio but aren’t. One possible explanation is that you’re scanner, unlike public safety radios, cannot tell the system what you’re wanting to listen and what site you’re on in order to send the audio to you.
Generally speaking, talkgroups operated by SNOCOM will only appear on the West Simulcast and talkgroups operated by SNOPAC will only appear on the East Simulcast. Some exceptions are mutual aid talkgroups, agencies near the East/West system border and agencies with countywide jurisdiction, like SCSO.
Inteli-Repeaters (or ‘I/Rs’) will typically only carry the selected talkgroup traffic of an authorized radio affiliated to it.