Barker—Williamson_VS300A-(Manual操作说明书手册)

BWANTENNA TUNER MODEL VS300AVS 3OOA TransmatchDESCRIPTION ANDFEATURESThe Barker Williamson VS 300A Transmatch is designed to match virtually any receiver,transmitter or transceiver in the 160 to 10 meter range(1.8 to 30MHz)with up to300 watts RF power to almost any antenna,including dipoles,inverted vees,verticals.mobile whips,beams,random wires and others,fed by coax cable.balanced lines or a single wire.A 1:4 balun is built in for connection to balancedlines.The TUNER switch,on the front panel,provides switching to one of two coax fedantennas(direct or through the tuner),and either a balanced line or wire antenna.The BYPASS (BYP)position allows switching to a dummy load or a directconnected coax antenna.In the BYPASS,COAX 1 OUT or COAX 2 OUT positionsthe tuner is bypassed,but not the meter circuit.The wattmeter of the VS 300A can be used with the tuner or when in the directmodes.The wattmeter is between the transmitter and the tuner when the TUNERswitch is in the COAX 1 IN,COAX 2 IN or WIRE positions.To read the transmitteroutput power.set the wattmeter switch to FOR 300W and read the forward poweron the 300w scale.To read the reverse power,set the wattmeter switch to REV30W and read the reverse power on the 30W scale.Distributed by;BWBARKER WILLIAMSONBRISTOL.PENNSYLVANIA 19007TEL:215-788-5581