HF power amplifier SSB CW 1000W MOSFET SD2943 copper and heat sink

PA1000W SSB/CW 1.8-30 MHz with copper plate and aluminum he atsink! HF power amplifier 1000W with modern MOSFET transistors SD2943 See Youtube video about SD2943 MOSFET VSWR ruggedness Assembled and tested PCB with matched transistors SD2943 - 1000W output. Transmission line output transformer on LAIRD 28 material cores. Temperature compensated BIAS voltage regulator. Circuit board is FR4 double layer, 130 x 95 mm , copper thickness 50 um (1.5 oz) Operating frequency band 1.8 - 30 MHz Drain power supply voltage 48-60 V Current consumption 30 A max Input power 6-8 W Output power 1000W Size with copper and heatsink 150 x 110 x 160 mm.