The K.W. 2000B TRANSCEIVER is a complete unit enabling transmission and reception of single-sideband and CW on all amateur bands between 1.8 MHz and 30 MHz. Reception of AM signals is also possible. It is capable of transmitting and receiving either upper or lower sideband signals. Separate power units for operation on 200—250v A.C. and 12v D.C. make the equipment suitable for “fixed” or “mobile” stations where a compact installation is required. 1—2 Receiver The receiver section of the KW 2000A transceiver is a double conversion superhet, with a CRYSTAL CONTROLLED 1st MIXER, and a highly stable VFO, a MECHANICAL FILTER for optimum performance on SSB. and a CRYSTAL CONTROLLED CARRIER OSCILLATOR. Independent receiver frequency tuning (IRT) is provided with a deviation of approximately ±6 KHz. A product detector is used for all modes of reception. Output stage is capable of delivering 1.5 watts of audio to the loudspeaker. The equipment is fitted with a cystal calibrator 100 KHz marker. 1—3 Transmitter The exciter/transmitter section uses the same CARRIER OSCILLATOR, MECHANICAL FILTER. VFO and HF XTAL OSCILLATOR as the receiving section. The PA stage has an output of 100 watts P.E.P. on SSB and 150 watts D.C. input on CW. A Pi output stage provides a variable output impedance. Independent transmitter frequency tuning (ITT) is provided with a deviation of approximately ±6 KHz from the indicated dial reading. The equipment is fitted with Voice Control but can also be operated with a “press to talk” function. 1—4 Power Supplies Two power supplies are available, one for operation on 200—250v 45—65 Hz A.C. mains supply, and the other for operation on 12 volts D.C. battery supply. A special A.C. power supply is available for 100—125 volt 60 Hz line voltage. A power reduction switch is fitted to both types of power supply unit for 160 metre operation. The A.C. power supply has a loudspeaker incorporated within the cabinet. 1—5 Antenna The antenna system used should have a low V.S.W.R. Antennas for use on “fixed” or “Mobile” installations are available. Generally a feed impedance of approximately 20 to 300 ohm is acceptable to transmitter output Pi circuit.