Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0
© Radioddity 2023 page 28 of 252
3. Confirm the correct polarity of the connections, then attach the power cable to
the battery terminals: Red connects to the positive (+) terminal and black
connects to the negative (-) terminal.
4. Reconnect any wiring removed from the negative terminal.
5. Connect the DC power cable to the transceiver's power supply connector. Press
the connectors firmly together until the locking tab clicks. Additional clip-on
ferrites applied to the power cable and close to the radio will prevent any HF
radiation to enter the power supply lines.
Notes: If you use the Radioddity DB25-D for a long period and the vehicle battery is
not fully charged or when the car engine is OFF, the car battery may become
discharged and will not have sufficient power left to start the vehicle. Avoid
using the Radioddity DB25-D in these conditions.
5.1.3.2 Base Station Operation
In order to use the Radioddity DB25-D for fixed station operation you will need a
separate 13.8 V DC power supply (not included). Please contact your local dealer
about it. The recommended current capacity of your power supply should be at
least 5 A.
Notes: Before connecting the DC power to the Radioddity DB25-D, be sure to switch
the DC power supply OFF. Do not plug the DC power supply into an AC outlet
until you make all connections.
1. Make sure that both, the Radioddity DB25-D and DC power supply are off.
2. Connect the DC power cable to the regulated DC power supply and ensure that
the polarity is correct. (Red: positive; Black: Negative}. Use the supplied DC
power cable to connect the Radioddity DB25-D to a regulated power supply.
Do not substitute a cable with smaller gauge wires.
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