On Sun, 3 Apr 2016 08:32:21 +0100, you wrote:
Hi David,
No need to host the NBS Reference Level Pulse Generator article on your site.
It is already on the internet at
Dennis Tillman W7PF
I downloaded it, skim read and tried to save - only to find that I already had it!
Did you spot the co-author was James Andrews, founder of Picosecond Pulse Labs - which he sold to
Tektronix a couple of years ago?
And that the rather critical BFR90 transistor and 5082-2835 Schottky have been discontinued by
Vishay and HP/Agilent for the comfort and convenience of the customer. Although eBay is your friend
if you are determined to build the unit.
Craig
There are other suitable RF transistors from NXP among others. HP's
semiconductor division is part of Avago and their schottky diodes are
readily available and inexpensive. Transistor base-emitter junctions
could be used in place of the schottky diodes.
David Hess