NEW BIG TB-4200 BOOSTER144MHZ OUT 4100 WATT TUBE / 2 MTR BAND AMATEUR RADIO RANGE FREQ : 142 MHZ - 145 MHZ OUT PUT : 4100 WATT INPUT : 200 WATT VALVE : 2 X GS35B TUBE DIMENTION : H 12 INCH X W 23 INCH X L 23 INCH WEIGHT : 120 KG GUARANTY : 3 MONTH