User's Manual
Table Of Contents
- Features
- Controls and Display
- General Operation
- Radio-wide Features
- 4.1 Viewing Radio Information
- 4.2 Option Keys / Buttons
- 4.3 Feature Enable / Disable
- 4.4 Menu Mode
- 4.5 Function Recall
- 4.6 Time-Out Timer
- 4.7 Home Channel Select
- 4.8 Power Output Select
- 4.9 Alert Tone Select
- 4.10 Surveillance Mode
- 4.11 Scanning
- 4.12 Global Positioning System (GPS)
- 4.13 Radio Service
- 4.14 Fire Ground Mode
- Conventional Mode Features
- 5.1 Monitoring Before Transmitting
- 5.2 Monitor Mode
- 5.3 Busy Channel Lockout
- 5.4 Call Guard Squelch
- 5.5 Penalty Timer
- 5.6 Conversation Timer
- 5.7 Repeater Talkaround
- 5.8 Displaying Transmit / Receive Frequency
- 5.9 Emergency Alarm and Call
- 5.10 Conventional Mode Scanning
- 5.11 Standard Conventional Calls
- 5.12 ANI Signaling Options
- 5.13 Project 25 Mode Features
- 5.13.1 Digital Unit ID
- 5.13.2 Talkgroup ID
- 5.13.3 Network Access Code
- 5.13.4 Out of Range (EFJohnson Conventional) Indication
- 5.13.5 Automatic (EFJohnson Conventional) Registration
- 5.13.6 P25 Group Calls
- 5.13.7 Talkgroup Scan
- 5.13.8 P25 Unit Calls
- 5.13.9 P25 Conventional Telephone Calls
- 5.13.10 Call Alert
- 5.13.11 Call History
- 5.13.12 Messaging
- 5.13.13 Status Messaging
- 5.13.14 P25 Packet Data
- 5.14 Keypad Programming
- 5.15 Text Messaging
- 5.16 Fire Ground Mode
- SmartNet / SmartZone / P25 Trunked Features
- 6.1 Analog and Digital Operation
- 6.2 Standard Group Calls
- 6.3 Private (Unit-To-Unit) Calls
- 6.4 Telephone Calls
- 6.5 Call Alert
- 6.6 Messaging
- 6.7 Sending Status Conditions
- 6.8 Emergency Alarm and Call
- 6.9 Failsoft Operation
- 6.10 SmartNet / SmartZone / P25 Trunked Scanning Features
- 6.11 Dynamic Regrouping
- 6.12 SmartZone and P25 Trunking Unique Features
- 6.13 Zone Password
- Messages
- Secure Communication (Encryption)
- Data Features
- Service Information
Viking Portable 600 Radio Operating Manual 5-5
Conventional Mode Features
5.4.3 Digital Call Guard Squelch
Digitally Coded Squelch (DCS) uses digital data instead of subaudible tones to control the
squelch. When the push-to-talk switch is released, a turn-off code is transmitted which
eliminates the squelch tail similar to the reverse burst.
5.4.4 Call Guard Disable
A programmed option lets the radio disregard any CTCSS/DCS or NAC/Talkgroup
information on the current channel. This feature is best described as a monitor mode with
no white noise. In analog it is functionally the same as turning the squelch mode to
“normal.” In digital mode it is analogous to checking the “digital squelch” box when
programming the radio. The function can be programmed to any button or the ABC toggle
switch, and the menu. The mode will stay active through channel changes (between
conventional channels) and during scan. While the feature is active the monitor icon will
be displayed.
5.4.5 Conventional Squelch Adjust
Squelch settings on a conventional analog channel can be changed by the user from -7 to
+7. A menu item or function button can be programmed for squelch adjust. While on a
conventional analog channel without emergency or scan active, the user can select the
programmed button or menu item for squelch adjust. The current squelch setting will
show on the display.
Using the up and down buttons on the portable, the user can adjust the squelch setting to a
desired level from -7 to +7. Increasing the value towards +7 causes the squelch to open
sooner for weaker signals while decreasing towards -7 has the opposite effects. Pressing
the select button will store the new squelch setting and return the user to the main display.
5.4.6 Selective Squelch Code Select (CTCSS / DCS / NAC)
This feature allows the normal transmit and receive Call Guard (CTCSS/DCS/NAC)
programming to be temporarily overridden with a code selected from a pre programmed
list. It is available if the Squelch Select List option button or menu parameter and a
CTCSS/NAC code list have been programmed.
Note Call Guard codes can be permanently reprogrammed by keypad programming described
in Section 5.14, "Keypad Programming".
Preliminary Draft 3/9/12