Hi Alan finished the fast pulse generator, you can see it's ringing ok on the top of the trace and a small ringing on the bottom start edge, I'm going to build the other part tomorrow for inductance and capacitance, tried it on coax, but mine has a 4: 1 balun in it, so it reflected pretty much as this only larger, I'm running it at 3.5ish volts, which seems to be most happiest at, it's a brilliant edition to the ham shack. there is one thing I need to ask ,my scope measures in micro seconds , not nano, seconds, and I don't know the calculation difference between the two
Thanks
Paul