Why is there no sound coming from the speaker of my POLMAR Transceiver?
If no sound comes from the speaker, it could be due to a muted squelch. Try decreasing the squelch level. Alternatively, the Tone or CTCSS/DCS squelch might be active; in this case, turn CTCSS or DCS squelch off.
What to do if the PTT key is pressed but transmission does not occur on my POLMAR Transceiver?
If pressing the PTT key doesn't initiate transmission, check the microphone and antenna connections. Ensure the microphone and antenna are properly connected.
What to do if the fuse is blown on my POLMAR Transceiver?
If the fuse is blown, you should identify and resolve the underlying issue that caused it to blow. Then, replace the blown fuse with a new one.
How to unlock the keys and dial on my POLMAR Transceiver?
If the key and dial are not functioning, the key-lock function may be activated. Cancel the Key-lock function to restore their operation.
How to brighten a dim display on a POLMAR Transceiver?
If the display is too dim, adjust the Dimmer to a higher level.
What to do if power is on but nothing appears on the display of my POLMAR Transceiver?
If the power is on but nothing appears on the display, the + and - polarities of the power connection may be reversed. Connect the red lead to the plus terminal and the black lead to the minus terminal of the DC power supply.
Why won't the rotating dial change the memory channel on my POLMAR Transceiver?
If the rotating dial won't change the memory channel, the transceiver may be in CALL mode or VFO mode.
Introduction to the transceiver and essential safety guidelines for operation.
List of items included in the package and available separately.
Procedures for mounting the transceiver and connecting the power supply.
Guidelines for correctly connecting the antenna and other external components.
Identification of transceiver controls, display, and ports.
Fundamental transceiver functions including power, volume, mode switching, and tuning.
Core functions for radio communication, including signal reception and transmission.
Quick access to key functions and monitoring features.
Configuration of CTCSS, DCS tone, and DTMF signaling.
Controlling keypad behavior, lockout functions, and display options.
Procedures for data transfer and restoring factory defaults.
Instructions for installing programming software and drivers on PC.
Solutions for common operational issues and problems.
Detailed performance, dimensional, and electrical data of the transceiver.
Tables listing CTCSS tone frequencies and DCS codes.
Terms and conditions of the product warranty.
General| Brand | POLMAR |
|---|---|
| Model | DB-50M |
| Category | Transceiver |
| Language | English |
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