Finally got some time to finish mine and 'hand select' the transistors for the kits. ( i ran them on the curve tracer and selected the ones that avalanched at around 40 volts. there is notable difference between the 2N2369 and 2N2369A and then manufacturers...
the ones from ST avalanche much higher .... i found a bunc of motoroils at the local junk dealer. these work fine.
Ran the pulser into a 7GHz analog bandwidth scope ( see attached image )
210 pS rise time on an almost 10 Vpp signal ( 10% to 90% ) so 210pS to do 8 volts. That's a -VERY- fast signal. And it may be thelimit of the scope .. (7GHz analog bandwidth ,injected diectly into the 50 ohm SMA port ( this scope has SMA inputs ))
So , i will assemble and package kits today and tomorrow and then they will appear on ebay. i will call the item JWPULSER so search for that starting Thursday. I only charge the cost of the parts. Comes with a case , SMA connector ( no sma-bnc adaptor ) and you get two of the transistors.