Отправлено: 27.09.16 11:13. Заголовок: Power amplifier 500W SDR Digital Data Modes FM SSB CW water cooling 1.8-54 MHz

PA500W Digital Data Modes/FM/SSB/CW/ 1.8-54 MHz with copper plate and water cooling heatsink!





Assembled and tested PCB with 2 matched units of transistors VRF2933 - 500W out
Transmission line output transformer on 43 material cores
Circuit board is FR4 double layer, copper thickness 50 um (1.5 oz)
Size 80 x 100 mm
Operating frequency band 1.8 - 54 MHz
Drain power supply voltage 50-55 V
Current consumption 15 A max
Input power 2-3 W
Output power 500W
Cables, wires for the switch - Teflon
In water cooling heatsink 2 pcs FAN 120 mm 12V (ZALMAN ZM-F3)
Water pump - 12V 400 mA
Heatsink copper
You can see on the video test of the power amplifier work in a continuous mode. You can see the linearity bands as well.

VIDEO TEST 20 min transmission

 Отправлено: 31.10.16 16:43. Заголовок: http://f4.s.qip.ru/~..