I am wondering if anyone has an explanation for why the Elecraft KPA500 amplifier (500 watts) employs 2 VRF2933 FETs (Microsemi) in the final PA where the THP uses 4 ST2933 FETs (STMicroelectronics) to generate very similar power levels. The data sheets for each FET indicate that both brands are rated at 300-400 watts, support similar mismatches and run at similar voltage maximums. They have very similar specs all together.
Perhaps our amplifier gurus could weigh in here. Much appreciated. 73, Jim Robbins N1JR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
