User's Guide
Table Of Contents
- Contents
- List of Figures
- List of Tables
- Legal and Support
- Radio Care
- Radio Overview
- Getting Started
- Home Screen Overview
- General Radio Operation
- 5.1 Selecting Zones
- 5.2 Selecting Channels
- 5.3 Mode Select Feature
- 5.4 Selecting the Power Level
- 5.5 Selecting a Radio Profile
- 5.6 Enabling and Disabling the Radio Alias
- 5.7 Adjusting the Display Backlight
- 5.8 Editing the Time and Date
- 5.9 Locking and Unlocking the Controls
- 5.10 Setting the Tones for Controls and Buttons
- 5.11 Setting the Voice Mute
- 5.12 Using the Time-Out Timer
- 5.13 Adjusting the Squelch Level
- 5.14 Conventional Squelch Operation
- 5.15 Using the PL Disable Feature
- 5.16 Digital PTT ID Support
- 5.17 General Radio Information
- Trunking System Controls
- Types of Radio Calls
- Emergency Operation
- Fireground
- Tactical Public Safety (Conventional Only)
- Man Down (Fall Alert)
- Secure Operations
- Scan
- Scan Lists
- Connectivity
- Location
- Mission Critical Geofence (ASTRO 25 Trunking)
- Contacts
- Recent Calls
- Sending Status
- Call Alert Paging
- Automatic Registration Service
- User Login Feature
- Text Messaging Service
- Monitor Feature
- Remote Monitor
- Transmit Inhibit
- Dynamic Regrouping (Trunking Only)
- Dynamic Zone Programming
- Zone-to-Zone Cloning
- Radio Kill
- Radio Inhibit
- Voice Announcement
- Site Selectable Alerts
- Additional Performance Enhancement
Chapter 27
Transmit Inhibit
The Transmit Inhibit feature allows you to stop all transmission including voice and data. The radio can
receive messages but not able to reply the acknowledgment request of the received message.
This feature is available for APCO 25 Trunking, Type II Trunking and Conventional operations for all
APX radios.
You can physically control the transmission of the radio especially during operation in hazardous
environments. An environment is considered hazardous if radio transmission could initiate an explosion
or other dangerous reactions.
27.1
Enabling or Disabling Transmit Inhibit
Procedure:
To enable or disable transmit inhibit, press the TxIn menu item.
If Transmit Inhibit is enabled, your radio shows the following indications:
• A tone sounds.
• The display shows Tx inhibit on.
NOTE: If you press the PTT button, a negative tone sounds.
If Transmit Inhibit is disabled, your radio shows the following indications:
• A tone sounds.
• The display shows Tx inhibit off.
The status of the Transmit Inhibit does not change after the radio powers up.
27.2
Smart PTT (Conventional Only)
Smart PTT is a per-personality, programmable feature used to keep radio users from talking over
other radio conversations. When Smart PTT is enabled in your radio, you cannot transmit on an active
channel.
The following table shows the variations of Smart PTT.
Mode Description
Transmit Inhibit on Busy Channel with Carrier You cannot transmit if traffic is detected on the
channel.
Transmit Inhibit on Busy Channel with Wrong
Squelch Code
You cannot transmit on an active channel with a
squelch code or (if secure-equipped) encryption
key other than your own. If the PL code is the
same as yours, the transmission is not prevent-
ed.
MN009363A01-AA
Chapter 27 : Transmit Inhibit
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