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GENERAL INFORMATION The RKN4075 Programming Cable provides the interface between a computer and a portable radio for programming with Radio Service Software. An adapter is supplied which converts the DB25 to a DB9 connector for interfacing to a com- puter with DB9 ports.
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SCHEMATIC DIAGRAM RADIO SIDE CONNECTOR DB25 FEMALE TO EXT SPKR + COMPUTER EXT SPKR - OPT. B+ CHASSIS GND OPTION B+ RX DATA RX DATA EXT MIC TX DATA TX DATA OPT SEL 2 BOOT CTRL BOOT CTRL OPT SEL 1 SIGNAL GND RX DATA TX DATA...