I have a few idea's for winter radio projects and one is a robust power supply for my well working Cheyenne transmitter. I have tested it at 400 volts and it works well but only puts out 5 watts at that voltage. looking to make a 700 volt choke input supply and would need about a 1400 to 1500 volts center tapped transformer at about 150 to 200 ma. If anyone has one, or knows of a source, let me know. Other projects might be another higher powered screen modulator using something like a 6DQ6 as the catthode follower, triode connected. I use a triode connected 6l6 in another transmitter and it works fine but would like to try the sweep tube. It will drive three 4X150 tubes for 300 watts on 40, replacing my 200 watt setup using two 4X150's and a 6EW7 modulator. AnTec may make a transformer but I am unsure what model.