The Rig I described it is capable of much higher power (depending upon output FET currently an IR840?) with increase in PA voltage it's currently got 12volts applied. Because I use 7812 voltage regulators for the logic stages they will only stand about 25volts max, with this rig, limits the power to around 30 to 40 Watts O/P. Suppose I could separate the supply to the PA and get a lot more from the device I supose.

The output goes straight into the aerial 100mm diameter transformer via a short coax lead then to 2 link turns, then from the "Top" of the transformer to the up lead which goes through teflon insulating washers throught the wall and straight up  to the 8inch ribbed glass insulator about 35 feet then on a slope to a 24foot mast (soon to increased to 35feet). Tuned against several long earthing wires.

 

73 es GL Pete M0FMT IO91UX