Kenwood TM-621A Instruction Manual

Also see for TM-621A: Instruction manual Instruction manual

i4. OPERATION4-1. OPERATING CONTROLS4-1-1. Front Panel‘O)@Main Tuning controlThis control is used to select the desired transmit/receive frequency, Memory Channel, Frequency Step,Tone Frequency, and Scan direction of the MAIN fre-quency band.CALL key (TM-621A/721A)The CALL key selects the CALL channel of the MAINfrequency band. The frequency has been factory-set asfollows, but may be reset to any desired frequency. (SeeCALL Channel P25.)TM-621A ; 220.000/144.000T™M-721AU.S.A. version ; 440.000/144.000Other market 3; 430.000/144.000TONE key (TM-721E)European version: This key is used to transmit a Tonesignal. When the key is depressed the repeater con-trol signal of 1750 Hz is activated.U.K. version: This key is used to activate the1750 Hz tone burst.®Saaxeyy?M$oN°LaVFO keyThis key is used to return to VFO operation after oper-ating in the MR (Memory Recall), or CALL Channel mode(TM-621A/721A only).The MAIN tuning control will increase frequency in theselected step size, the tone frequency (TM-621A/721Aonly), and/or the frequency step.MR/M keyThis key is used to select Memory Recall operation af-ter operating in the VFO or CALL channel mode. TheMAIN Tuning control may be used to select the desiredmemory channel in this mode.VOL control/Power switchThe volume control and power switch are combined.Rotating the control clockwise will turn ON the tran-sceiver.Advancing the control further clockwise will increasethe total volume of two bands. The BALANCE controlproportions the volume among the two bands.MAIN SQL controlThis control is used to select the desired SOL thresholdlevel of the MAIN frequency band.