"I have two 2500D plasma generators...........However the Henry has a single phase power supply and a 3cx3000A7" Hi, I picked up a plasma amp version with a 3CX3000F7 and turned down the offer to take the 3 phase power supply. Here is my progress report for conversion to a 20 meter monobander: http://w2dtc.com/w2dtc-plasma-amp-page.htm 73, Ken W2DTC