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General| Frequency Range | 144-146 MHz |
|---|---|
| Output Power | 25 W |
| Modulation | FM |
| Voltage | 13.8 VDC |
| Type | VHF Transceiver |
| Receiver Sensitivity | 0.16 µV for 12 dB SINAD |
| Supply voltage | 13.8 V |
| Channel Step | 5 kHz / 10 kHz |
| Current Consumption | 0.5 A (RX) |
Important safety instructions for preventing electric shock, fire, and injury.
Technical specifications for various transceiver models, including frequency range, power, and sensitivity.
List of accessories that should be included with the transceiver upon purchase.
Steps for mounting the transceiver in a vehicle or fixed location.
Guidance on connecting the transceiver to power sources and antennas for mobile and fixed use.
Explanation of the functions of various controls and keys on the transceiver.
Description of indicators and their meanings on the transceiver's LCD display.
Steps for setting up and adjusting the receiver for optimal performance.
Methods for selecting operating frequencies and tuning step sizes.
How to set custom tuning ranges for the VFO to limit frequency selection.
Using the ALT system to automatically compensate for frequency drift in TM-531A/531E models.
Procedures and precautions for transmitting, including SWR and microphone use.
Resetting the microprocessor and understanding special memory channel functions.
Details on what data can be stored in memory channels and how to enter it.
Procedures for using the Call Channel and recalling stored memory data.
Overview of scan options and how to manage scan hold and resume functions.
Setting up programmable band scans and memory channel scans, including lockout.
Monitoring a specific memory channel (Ch 1) while operating on another frequency.
Configuring transmitter offsets for repeaters and using the reverse frequency function.
Using sub-audible tones, CTCSS, and autopatch features for repeater access.
Configuring the Tone Alert function for audible alarms on incoming signals.
Setting tone quality and the number of phrases for the digital recording unit.
Procedures for manually recording signals or voice messages via microphone.
Playing back recorded messages and configuring automatic recording based on signals.
Factory alignment, service procedures, and warranty information.
Table of common problems, probable causes, and corrective actions for the transceiver.
Instructions for installing the optional CTCSS Tone Decoder unit.
Installation of the digital recording unit and operation of the remote controller.
Description of various available microphones and external speakers for the transceiver.
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