To Next PageTo Next PageWhat to do if the Alinco DR-438 Transceiver PTT key is pressed but doesn't transmit?
If the PTT key is pressed on your Alinco Transceiver but it doesn't transmit, check that the microphone and antenna are properly connected.
Why no sound from Alinco DR-438 speaker?
If no sound comes from the speaker of your Alinco Transceiver, the squelch level might be too high. Try decreasing the squelch level. Also, if selective-calling like TSQ is activated, press the [Moni] key to monitor.
How to unlock Alinco Transceiver key and dial?
If the keys and dial on your Alinco Transceiver do not function, the key-lock function may be activated. Cancel the key-lock function to restore functionality.
Why won't the Alinco Transceiver rotating dial change the memory channel?
If the rotating dial on your Alinco Transceiver will not change the memory channel, the transceiver might be in CALL mode. Press the key to exit CALL mode.
What to do if Alinco Transceiver power is on, but nothing appears on the display?
If the power is on but nothing appears on the display of your Alinco Transceiver, check the polarities of the power connection. Ensure that the red lead is connected to the plus terminal and the black lead to the minus terminal of the DC power supply.
What to do if Alinco Transceiver fuse is blown?
To resolve a blown fuse in your Alinco Transceiver, first, identify and fix the underlying problem that caused the fuse to blow. Then, replace the blown fuse with a new one.
General| Brand | Alinco |
|---|---|
| Model | DR-438 |
| Category | Transceiver |
| Language | English |
Guidance on avoiding interference with other devices during radio transmissions.
Context for users exposed to RF as a consequence of employment.
Equipment tested for Class B digital device compliance, providing protection against interference.
Conformance with Canadian license-exempt radio apparatus standards.
Manufacturer disclaims responsibility for product failure when used with third-party devices.
Crucial instructions for safe and proper handling of the transceiver.
Procedures to follow in emergency situations involving the transceiver.
Guidelines for maintaining the transceiver.
Recommendations for safe operation and environmental considerations.
List of items included in the transceiver package.
Instructions for mounting the transceiver in a vehicle.
Guide for connecting the transceiver to power and antenna.
Overview of transceiver controls, connectors, and display elements.
Connecting microphone and performing fundamental operations like power, volume, squelch.
How the transceiver functions in different modes like VFO and Channel.
Settings like Busy Channel Lockout, Reverse TX/RX, Talk Around, Scrambler, DTMF/5TONE IDs.
Adjustments for Voice Compander, Beep Sound, TOT, and APO.
Controls for display illumination, scanning, resetting, and PIN setup.
Using the microphone for keypad operations, DTMF, and mode switching.
Description of controls and indicators on the front of the transceiver.
Overview of essential operational buttons and their functions.
Functions activated by holding specific key combinations.
Description of connectors on the rear of the transceiver.
Explanation of the transceiver's display elements and symbols.
Details about the microphone and its functions, including connector diagram.
Explanation of Frequency, Memory, and Name Tag modes.
Operating mode for commercial use with limited manual settings.
Procedure for turning the transceiver on/off and adjusting audio level.
Using the dial to change frequency or channel.
Setting squelch, listening to communications, and transmitting procedures.
Transmitting specific tones for signaling purposes.
Storing and deleting frequencies and settings into memory channels.
Disabling squelch temporarily or permanently.
Setting up CTCSS/DCS tones and codes for selective calling.
Scanning through frequencies or memory channels.
Scanning CTCSS/DCS, adjusting power levels, and selecting bandwidth.
Using Compander for audio clarity and setting repeater offset frequencies.
Locking the keypad and programming/using the auto-dialer.
Activating emergency alarm and transmitting DTMF tones.
Setting frequency increments and configuring DTMF/2TONE/5TONE signaling.
Sending 2-TONE, 5-TONE, and DTMF calls.
Setting up combined signaling for improved reception.
Adjusting power, bandwidth, and enabling TX Off mode.
Configuring Busy Channel Lockout and editing channel names.
Swapping transmit and receive frequencies.
Enabling direct communication and enhancing audio clarity.
Setting up voice encryption and checking radio's DTMF/5TONE IDs.
Managing beep sounds and limiting transmission time.
Configuring auto power off and DTMF transmission timing.
Adjusting display illumination, scanner resume time, and LCD brightness.
Setting tone-burst frequencies and choosing display modes.
Setting up PIN access and managing the address list.
Resetting the radio to factory or initial default settings.
Locking the keypad and sending DTMF signals via microphone.
Changing modes and setting optional signaling via microphone.
Configuring scan skip, channel scanning, and busy channel lockout.
Swapping TX/RX frequencies and limiting transmission time.
Setting up CTCSS/DCS tones and codes for selective calling.
Enabling direct communication and managing beep sounds.
Adjusting power output and LCD brightness.
Default configurations for DR-138 and DR-438 after reset.
Common problems and their solutions for the transceiver.
Technical specifications for the DR-138 model, including receiver and transmitter data.
Technical specifications for the DR-438 model, including receiver and transmitter data.
Table listing 50 groups of CTCSS tone frequencies.
Table listing 1024 groups of DCS codes.
