Not everyone wants to listen to a scanner or CAVERN throughout the day…and especially at night. Luckily CAVERN programmed radios can screen out the day–to-day chitchat on the frequency, so that you only hear alerts of local emergencies put out by fellow CAVERN volunteers.
To screen out chitchat set your CAVERN-programmed RETEVIS RT22 to channel 9, or (newer)BTECH GMRS V1 to channel 33. Additionally any FRS/GMRS radio that supports privacy tones can be set to channel 15 with a “privacy” or CTCSS receive tone of 103.5 Hz. Consult your manual or firstname.lastname@example.org. (Often tone #13 corresponds to 103.5 Hz.)
NOTE: We test the tone at the beginning of Net check-ins or when a Fire siren is tested BUT we conduct actual check-ins on non-emergency channels! (RT22 ch8, V1 ch 15 or 23, most FRS/GMRS radio ch.15 with NO privacy tone.) So reset your radio after test or you may not hear anything!
Should you need to announce an emergency, first listen and ask on the non-emergency channel if the network is already aware of the emergency.
If there is imminent danger to the some part of the Cobb area (as in a moving fire within 1-3 miles likely to require evacuation) put out an emergency alert with as much detail RETEVIS RT22 to Ch .9, or BTECH GMRS V1 to channel 15 or 23 with CTCSS 103.5 set on transmit. Additionally any FRS/GMRS radio that supports privacy tones can be set to channel 15 with a “privacy” or CTCSS tone corresponding to 103.5 Hz (often named tone #13).