Kenwood TK-5220 Instruction Manual

Also see for TK-5220: Service manual

Terminal DescriptionsUniversal connectorIt is possible to use a resin-based cover for the Universal connector.No. Name Description Impedance I/O1 SSW Ext/Int Speaker Switch Input High Impedance I2 SP+ BTL Output + for External Speaker 8 Ω/ 16 Ω O3 SP- BTL Output - for External Speaker O4 MSW Ext/Int MIC Switch Input High Impedance I5 EMC External MIC Input 1.8 kΩ I6 ME External MIC GND GND -7 PTT External PTT Input High Impedance I8 PF Programable Function Key Input High Impedance I9 OPT Man Down Input High Impedance I10 E GND GND -11 5V 5V power supply output 5V O12 TXD Serial Data Output CMOS O13 RXD Serial Data Input CMOS I14 NC Not used - -Antenna Terminal50 Ω impedanceBattery TerminalThe battery terminal uses a spring plate.The negative terminal connects to the chassis ground.The battery is mounted on the rear side of the transceiver using asliding mounting method.