User's Manual
Table Of Contents
- Safety Information
- General
- Controls And Display
- General Operation
- Radio Wide Features
- Conventional 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 Talk-Around
- 5.8 Displaying Transmit/Receive Frequency
- 5.9 Emergency Alarm and Call
- 5.10 Conventional Mode Scanning
- 5.11 Standard Conventional Calls
- 5.12 DTMF/ANI Signaling
- 5.13 Single Tone Encoder
- 5.14 MDC1200 Compatibility
- 5.15 Project 25 Mode Features
- 5.16 Keypad Programming
- SMARTNET/SmartZone/P25 Trunked Features
- 6.1 Analog and Digital Operation
- 6.2 Viewing Unit ID
- 6.3 Standard Group Calls
- 6.4 Private (Unit-To-Unit) Calls
- 6.5 Telephone Calls
- 6.6 Call Alert
- 6.7 Messaging
- 6.8 Sending Status Conditions
- 6.9 Emergency Alarm and Call
- 6.10 Failsoft Operation
- 6.11 SMARTNET/SmartZone/P25 Trunked Scanning Features
- 6.12 Dynamic Regrouping
- 6.13 SmartZone and P25 Trunking Unique Features
- 6.13.1 Busy Override
- 6.13.2 Site Trunking
- 6.13.3 Determining Current Site and Searching For a New Site
- 6.13.4 Locking/Unlocking a Site
- 6.13.5 ZoneFail Site Lock
- 6.13.6 P25 Wide Area Scan
- 6.13.7 Normal P25 and SmartZone Control Channel Hunt
- 6.13.8 Talkgroup Steering Via System Access Permissions
- 6.13.9 P25 Wide Area Scan
- Miscellaneous
- Determining Available Options
- 5300 ES Mobile Firmware Versions
- Password Description
- Secure Communication (Encryption)
Draft
-2 5300 ES Series Mobile Radio Operating Manual December 2006
Busy Indicator - With scanning disabled, note if the multi-function indicator on the
front panel is steady green. If it is not, the channel is not being used and a call can be
transmitted. If it is green, a carrier is being detected, so the channel may be busy.
Monitor Mode - There may be times when the busy indication is displayed even
though no one is using the channel. Monitoring should then be performed by disabling
Call Guard squelch (or group ID detect on P25 channels). This is usually done by
selecting the Monitor Mode (see following) or by the Normal/Selective option switch
(see
Section 5.4.1).
5.2 Monitor Mode
The monitor mode unsquelches the receiver and monitors the channel even if a carrier is
not detected. Other features of this mode are as follows:
• Call Guard (CTCSS/DCS) squelch is disabled on analog channels and NAC and group
ID detect are disabled on P25 (conventional) channels.
• Busy Channel Lockout is overridden (see next section).
• Scanning temporarily halts.
The Monitor Mode operates as follows:
1 To monitor the transmit frequency for activity before transmitting, briefly press the
MON option switch. The display then indicates “MON” (see Figure 2.3) and the
receiver unsquelches.
2 To monitor the receive frequency instead, press and hold the MON option switch until a
tone sounds (approximately two seconds). This can be used, for example, to improve
reception if intermittent squelching is making a weak message difficult to understand.
Note If microphone off-hook detection is
enabled, the opposite of the above occurs.
3 To disable the monitor mode and return to normal operation, press the MON option
switch again.
If off-hook detection is enabled, taking the microphone off-hook monitors the receive
frequency similar to step 2. However, the receiver unsquelches only if a carrier is detected
(see Section 4.8). Pressing the SEL SQ option switch disables Call Guard squelch/P25
group ID detect but not scanning and P25 NAC detect (see Section 5.4).