Technical Manual

GUARDIAN VHF 110W MOBILE 9-1
CHAPTER 9: SIGNAL TONES
Tone Signal Cause
Key press error Invalid key pressed
Failed power on self-test (POST) Radio fails POST
Transmit time-out warning Time-out about to interrupt PTT
Brief low-pitched
Empty channel warning
No RX/TX frequencies programmed for the
channel
Transmit time-out timed out Transmit time is exceeded and PTT still pressed
Transmit inhibit
PTT switch is pressed and there is activity on the
transmit channel
Invalid mode No programmed data on the selected channel
Steady low-pitched
Radio locked
Radio locks after 3 consecutive wrong password
attempts
Key press Valid key press is accepted by the radio
Radio passed POST Radio passed POST
Brief medium-pitched
Clear voice received Radio is receiving a clear signal
Emergency call state Emergency button is pressed Repeated medium-pitched
Key error Encryption is selected but no key is present
Brief high-pitched Low dc supply voltage DC supply voltage falls below a preset value
Repeated high-pitched Individual call An individual call is received