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Nokia RD40 Modification:
Spec's after modification :
Frequency range 430.0000Mb2 / 440.0000Mh2
Channel step of 12.5KHz or 100KHz
l5Watt RF output power.
Rx / Tx Signal meter in display.
10 Memory channels.
Scan function.
Repeater offset + I.6MHz
PL tone sub carrier.
Audio squelch.
Steps of modification :
1. Remove the processor printed circuit board.
2. Modification of the Rx and Tx oscillator's.
3. 8 Volt supply modification of RF board.
4. Building of the Rx/Tx/Audio board.
5. Wiring of the Rx / Tx Audio board.
6. Building of the Microcontroller board.
7. Wiring of the Microcontroller board.
8. Programming of the PIC controller.
9. Adjustment of the transceiver.
10. Use of the transceiver.
Step 1.
Opens the Nokia and remove the processor board.
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