Kenwood TM-231A Instruction Manual

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Rear Panel@ ANTENNA connectorAttach an antenna with a low SWR and impedance of50 ohms.@ 13.8 VDC power input connectorConnect the supplied DC power cable to this connector.Pay close attention to the polarity. Red is positive andblack is negative.@) Fuse holderContains one of the following fuse. Do not use a largerfuse as damage might result to the transceiver.TM-231A/231E:15ATM-431A/431E: 10ATM-331A/TM-531A/531E : 8A@ External speaker jackThis jack is used to connect an external speaker. Thespeaker should have an impedance of 8 ohms.14Microphone @ ©U.S.A.European version version@ @ UP/DWN switchesThese switches can be used to increase or decrease theVFO frequency, the Memory channel number, and theTone frequency, etc..@ PTT (Push to Talk) switchThe transceiver will transmit whenever this switch isdepressed. Scan operations may be cancelled by press-ing this switch without transmitting.@ CALL key (except European version)This key functions just like the CALL key on the frontof the radio.1750 key (European version)The transceiver will transmit with 1750 Hz repeater ac-cess tone whenever this switch is depressed.@® VFO keyThis key functions just like the VFO key on the front ofthe radio.