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
6-12 Viking VM600 Mobile Radio Operating Manual
Conventional Features
Note Priority channel sampling is not available when receiving analog encrypted (DES) calls.
In addition, the priority channel is not scanned if the active channel is an analog channel
on the same frequency as the priority channel and is programmed with CTCSS/DCS
squelch control.
Either a single or dual priority channels can be programmed if desired. With dual priority,
a call on the second priority channel is interrupted by a call on the first priority channel but
not vice versa. When scanning and the selected channel is a single or first priority channel,
“P” is indicated in the left status display next to the zone number as follows:
This indication is displayed regardless of whether the priority channel is fixed or always
the selected channel. When the second priority channel is displayed, “2” is indicated
instead.
The priority channel sampling frequency is determined by the programmed Priority
Lookback Time A (see description which follows). For example, if 2.0 seconds is
programmed, the priority channel is sampled every 2.0 seconds when listening to a
message on a non-priority channel. When not listening to a message, the priority channels
are scanned in the normal scan sequence. With dual priority, the first and second priority
channels are alternately sampled at the Loopback Time.
Priority channel sampling occurs only with conventional scanning. It does not occur with
radio-wide scanning, when listening to any type of SMARTNET/SmartZone/P25 trunked
call, encrypted call, or when transmitting.
The priority sampling times are programmed by the following parameters:
Lookback Time A - This time determines how often the priority channel is checked for
activity. Times of 0.25-4.00 seconds in 0.25-second steps can be programmed.
Lookback Time B - This time determines how often the priority channel is checked
once an incorrect Call Guard (CTCSS/DCS) or NAC code is detected. Since it takes
much longer to detect an incorrect Call Guard signal than a carrier, this time should be
relatively long to prevent the interruptions from making a message difficult to
understand. Times of 0.5-8.0 seconds can be programmed in 0.5-second steps.
6.10.3.1 Changing The Priority Channel
If a fixed priority channel is associated with the current scan list, it can be changed to
another channel if the Priority option switch is programmed (or by menu selection). With
dual priority, this changes only the first priority channel. To change both priority channels,
use the Scan List Edit function described in Section 5.13.1. Proceed as follows to change a
priority channel using the Priority option switch:
Priority Indicator
Draft 4/29/2014