> After paying only limited attention to this topic, I suddenly have a
> need for a pulse generator that has <150 ps risetime and a pulse width
> of at least 2 ns. 100mv amplitude or more is fine. I've looked at the
> classic Jim Williams avalanche generator, but I don't want to have to
> deal
If one were trying to use it not simply for the time code but also as a
frequency reference, it seems to me that the ideal thing would be a ADC
that can easily use an external clock (derived from a local voltage-tuned
OCXO reference under control of the SDR). Otherwise one is doing (rather
coarse)
Somewhat new time-nut here (had one of the Samsung-branded Z3805s for a
few months as a house 10mhz ref, but it really got out of control when
I acquired a Wavecrest DTS, multiple frequency counters, an old Astron
1250a, a Lucent RFTG-u pair, etc.), thought I should finally de-lurk
since I can perh
