User's Manual
Table Of Contents
- Contents
- Introduction
- Basic Operating Procedures
- General Radio Features
- Often-Used Features
- Emergency Call and Alarm
- Scan Operation
- Turning On Scan
- Turning Scan On While Disregarding the Squelch Code (Conventional Modes Only)
- Viewing a Scan List
- Transmitting While Scan Is On
- Temporarily Deleting a Nuisance Mode with Scan On (W7 and W9 Control Heads Only)
- Restoring a Nuisance Mode (W7 and W9 Control Heads Only)
- Changing Mode Priorities While Scan Is On (W7 and W9 Control Heads Only)
- Restoring Mode Priorities in a Scan List (W7 and W9 Control Heads Only)
- Programming a Scan List
- Hang Up Box (HUB)
- Optional External Alarms (Horn and Lights)
- Time-Out Timer
- Push-To-Talk Identification (PTT-ID)
- Telephone Interconnect List (Conventional and Trunking)
- Unlimited Telephone Interconnect (W7 and W9 Control Heads Only)
- Call Alert Page (Conventional and Trunking— Digital Modes Only)
- Conventional Radio Features
- Trunking Operation
- Secure Operation
- Troubleshooting
- Glossary
- Index
- W7 and W9 Control Heads Foldout Page
96
Secure Operation
Loss Indication
When you press the PTT button while in the coded mode and without
the encryption module containing a valid key, the speaker generates
bursts of alert tones, and the display shows
KEY FAIL until you
release the PTT button.
When the radio is first turned on, six medium-pitched tones sound
and the display momentarily shows
KEY FAIL to indicate that the
encryption module does not contain a valid key for the current mode.
If the periodic keyfail tone feature is enabled, six medium-pitched
tones are generated every five to ten seconds while the radio is not
transmitting or receiving to remind you that the radio does not have a
valid key for the current mode. The keyfail reminder will not sound
when the radio is in clear mode.