User's Manual
Table Of Contents
- Table of Contents
- Safety Information
- Radio Overview
- Controls & Display
- Dual Controls & External Speaker
- General Operation
- 4.1 Basic Operation
- 4.1.1 Turning Power ON and Setting Volume
- 4.1.2 Power-Up Password
- 4.1.3 Speaking into the Microphone
- 4.1.4 Display Backlight Control
- 4.1.5 Display Viewing Angle and Contrast Adjust
- 4.1.6 Zone / Channel Display and Select
- 4.1.7 Setting Squelch Control
- 4.1.8 Transmit Disable
- 4.1.9 Operation At Extended Range
- 4.1.10 Preventing Vehicle Battery Discharge
- 4.1.11 Cleaning the Control Head
- 4.1.12 Radio Service
- 4.2 Operating Modes
- 4.1 Basic Operation
- Radio Wide Features
- 5.1 Option Buttons
- 5.2 Menu Mode
- 5.3 Time-Out Timer
- 5.4 Home Channel Select
- 5.5 Power Output Select
- 5.6 Alert Tone Select
- 5.7 Power Turn-Off Delay
- 5.8 Horn Alert
- 5.9 Microphone Off-Hook Detect
- 5.10 Surveillance Mode
- 5.11 Public Address
- 5.12 Scanning
- 5.13 Scan Lists
- 5.14 Global Positioning System (GPS)
- 5.15 Over the Air Programming
- Conventional Features
- 6.1 Monitoring Before Transmitting
- 6.2 Monitor Mode
- 6.3 Busy Channel Lockout
- 6.4 Call Guard Squelch
- 6.5 Penalty Timer
- 6.6 Conversation Timer
- 6.7 Repeater Talk-Around
- 6.8 Displaying Transmit / Receive Frequency
- 6.9 Emergency Alarm and Call
- 6.10 Conventional Mode Channel Scanning
- 6.11 Standard Conventional Calls
- 6.12 DTMF / ANI Signaling
- 6.13 Project 25 Mode Features
- 6.13.1 Digital Unit ID
- 6.13.2 Talkgroup ID
- 6.13.3 Network Access Code (NAC)
- 6.13.4 EFJohnson System Out of Range Indicator
- 6.13.5 EFJohnson System Automatic Registration
- 6.13.6 P25 Group Calls
- 6.13.7 P25 Unit Calls
- 6.13.8 P25 Conventional Telephone Calls
- 6.13.9 Call Alert
- 6.13.10 Call History
- 6.13.11 Messaging
- 6.13.12 Status Messaging
- 6.13.13 P25 Packet Data
- 6.14 Keypad Programming
- 6.15 Text Messaging
- 6.16 Sending Global Positioning System (GPS) Data
- SMARTNET / SmartZone / P25 Trunked Features
- 7.1 Analog and Digital Operation
- 7.2 Viewing Unit ID
- 7.3 Standard Group Calls
- 7.4 Private (Unit-To-Unit) Calls
- 7.5 Telephone Calls
- 7.6 Call Alert
- 7.7 Messaging
- 7.8 Sending Status Conditions
- 7.9 Emergency Alarm and Call
- 7.10 Failsoft Operation
- 7.11 SMARTNET / SmartZone / P25 Trunked Scanning Features
- 7.12 Dynamic Regrouping
- 7.13 SmartZone and P25 Trunking Unique Features
- 7.13.1 Busy Override
- 7.13.2 Site Trunking
- 7.13.3 Determining Current Site and Searching for a New Site
- 7.13.4 Locking / Unlocking a Site
- 7.13.5 Auto Site Search
- 7.13.6 ZoneFail Site Lock
- 7.13.7 P25 Wide Area Scan
- 7.13.8 Normal P25 and SmartZone Control Channel Hunt
- 7.13.9 Talkgroup Steering through System Access Permissions
- 7.13.10 P25 Wide Area Scan
- 7.13.11 Radio Information
- Secure Communication (Encryption)
- 8.1 Encryption Algorithms
- 8.2 Encryption Keys
- 8.3 Clear / Secure Strapping
- 8.4 Security Settings Override
- 8.4.1 Conventional (P25) Talkgroup Security Override
- 8.4.2 Secure Call Behavior
- 8.4.2.1 Failsoft, Group Regroup or Dynamic Regroup Call
- 8.4.2.2 Channel with only a Talkgroup Specified
- 8.4.2.3 Channel with both a Talkgroup and Announcement Group Specified
- 8.4.2.4 Channel with only an Announcement Group Specified
- 8.4.2.5 Announcement Group Call
- 8.4.2.6 Emergency Calls on Emergency Groups
- 8.4.3 Scan Mode Behavior
- 8.5 Over-The-Air Rekeying (OTAR)
- 8.6 Radio Setup For Encryption
- 8.7 Radio OTAR Capabilities
- Data Features
- Tones & Error Messages
- Service Information
Viking VM600 Mobile Radio Operating Manual 6-3
Conventional Features
6.3 Busy Channel Lockout
The Busy Channel Lockout (also called Transmit Disable on Busy) feature automatically
disables the transmitter if the channel is busy when the PTT switch is pressed. When the
transmitter is disabled by this feature, “BUSY” is displayed, a busy tone sounds, and the
transmitter is disabled.
The Busy Channel Lockout feature can be programmed to operate as follows. Each
conventional channel can be programmed differently.
“Off” - Busy channel lockout is disabled and the transmitter keys even if the channel is
busy.
“Noise” - If a carrier is detected on the channel, the transmitter is disabled when the
PTT switch is pressed.
“Tone (NAC)” - If an incorrect Call Guard (CTCSS/DCS) or P25 NAC code (see
Section 6.13.3) is detected, the transmitter is disabled when the PTT switch is pressed.
An incorrect code is any code other than the one programmed for the current channel.
“Status” - Indicated status of the radio as seen from the repeater. (If the status shows
Busy, then the mobile is transmitting.)
If Busy Channel Override is permitted by programming, it is possible to transmit even
when the transmitter is disabled by this feature. Release the PTT switch and then quickly
press it again within one second.
6.4 Call Guard Squelch
Tone or digital Call Guard squelch (also called CTCSS/DCS signaling) can be
programmed on each conventional analog transmit and receive channel in any order
desired. The reverse burst and turn-off code are always transmitted and also detected on
channels programmed with Call Guard squelch.
The Call Guard squelch feature eliminates distracting messages intended for others using
the channel. This is done by using a subaudible tone or digital code to control the squelch.
This tone or code is unique to a user or a group on that channel. This tone or code is
transmitted with the voice signal but is not heard because it is in the subaudible range and
is attenuated by a filter. Call Guard squelch must be used in both the transmitting and
receiving radio to be functional.
Draft 4/29/2014