What does COMM ERR mean on Motorola Portable Radio?
If your Motorola Portable Radio displays a COMM ERR message, it indicates a Communication Error, meaning cloning between the source and destination radios failed. Check the connection between the source and destination radios and ensure you are following the correct cloning procedures.
What to check if there is no/low signaling (PL, DPL, MDC) on Motorola EP350?
If there is no or low signaling (PL, DPL, MDC) on your Motorola Portable Radio, check the programming.
What to do if my Motorola Portable Radio displays FATALERR?
If your Motorola Portable Radio displays a FATALERR message, it indicates that the codeplug is corrupted. Try reprogramming the codeplug with the correct version and then retest the radio. If the message continues to appear, it may be necessary to replace the main board.
What to do if my Motorola EP350 displays PLLERROR?
If your Motorola Portable Radio displays a PLLERROR message, it means the radio cannot receive or transmit on the programmed frequencies due to a PLL Unlock Error. Try reprogramming the codeplug with the correct version and retest the radio. If the message reoccurs, it may be necessary to replace the main board.
What to do if my Motorola Portable Radio displays SLFTFAIL?
If your Motorola Portable Radio displays a SLFTFAIL message, it means the radio failed to initialize during start-up. Retest the radio by turning it off and then on again. If the message continues, it may be necessary to replace the main board.
What to do if my Motorola EP350 Portable Radio displays ERROR during cloning?
If your Motorola Portable Radio displays an ERROR message during cloning, it indicates that cloning between the source and destination radios has failed. Check the connection between the source and destination radios and ensure you are following the correct cloning procedures.
How to improve bad microphone sensitivity on Motorola Portable Radio?
If you are experiencing bad microphone sensitivity on your Motorola Portable Radio, check deviation and compensation and realign if necessary.
Why is audio distorted or not loud enough on my Motorola EP350 Portable Radio?
If the audio is distorted or not loud enough on your Motorola Portable Radio, a possible cause is that the synthesizer is not on frequency.
What does TYPE ERR mean on Motorola EP350?
If your Motorola Portable Radio displays a TYPE ERR message, it indicates a Mismatch Radio Type Error, meaning there are different source and destination radio models. Retest by connecting the same source and destination radio model.
Why Motorola Portable Radio is dead and display does not turn on?
If your Motorola Portable Radio is dead and the display does not turn on, it could be due to a dead battery. Replace it with a charged battery.
Information on product safety and compliance with RF energy exposure requirements.
Precautions for handling CMOS/LDMOS devices to prevent damage from static or voltage.
Guidelines for performing general repairs, including parts replacement and techniques.
List of essential test equipment required for radio servicing.
Block diagram and description of DC power regulation and distribution.
Theory of operation for the receive audio circuit.
Theory of operation for the transmit audio circuit.
Theory of operation for the microprocessor and associated EEPROM.
Detailed theory of operation for the UHF2 receiver.
Explanation of the UHF2 receiver front end circuitry.
Detailed theory of operation for the UHF2 transmitter.
Theory of operation for UHF2 frequency generation.
Table for diagnosing receiver issues in UHF2 radios.
Table for diagnosing synthesizer issues in UHF2 radios.
Table for diagnosing transmitter issues in UHF2 radios.
Table for diagnosing board and IC signal issues in UHF2 radios.
Detailed schematics and parts for UHF2 circuit boards.
Comprehensive list of electronic components for UHF2.
Detailed theory of operation for the VHF receiver.
Explanation of the VHF receiver front end circuitry.
Detailed theory of operation for the VHF transmitter.
Theory of operation for VHF frequency generation.
Table for diagnosing receiver issues in VHF radios.
Table for diagnosing synthesizer issues in VHF radios.
Table for diagnosing transmitter issues in VHF radios.
Table for diagnosing board and IC signal issues in VHF radios.
Detailed schematics and parts for VHF circuit boards.
Comprehensive list of electronic components for VHF.
Detailed theory of operation for the UHF1 receiver.
Explanation of the UHF1 receiver front end circuitry.
Detailed theory of operation for the UHF1 transmitter.
Theory of operation for UHF1 frequency generation.
Table for diagnosing receiver issues in UHF1 radios.
Table for diagnosing synthesizer issues in UHF1 radios.
Table for diagnosing transmitter issues in UHF1 radios.
General| Channel Capacity | 16 channels |
|---|---|
| IP Rating | IP54 |
| Drop Resistance | 1.2 meters |
| Frequency Range | VHF: 136-174 MHz, UHF: 403-470 MHz |
| Battery Life | Up to 11 hours |
| Power Supply | 7.5 V (Nominal) |
| Waterproof | Splashproof |
| Dimensions | 127.6 x 62 x 42 mm (with standard battery) |
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