Behold, R J Carpenter signalled from keyed 4-1000A filament:



"Gregg" wrote in message
news:COwwc.24725$jl6.6833@edtnps89...
I'm building a SWRX with PLL frequency generator and need a 1/2 dozen
of these chips. They are unobtanium from my Vancouver suppliers.

I need the speed of AS or S because the master osc. will be 60-90
MHz.

Have you considered the 74AC series? The 74ac74 will go well above 100
MHz. Prescale by 4 with these and then use slower presettable counters.

Or the 74HC/HCT4059 is guaranteed to do over 20 MHz and typically 50 MHz
and is a 16-bit presetable counter. Probably very hard to find these
days.

Thanks RJ,

Those chips *are* on my suppliers list :-)

--
Gregg
*It's probably useful, even if it can't be SPICE'd*
http://geek.scorpiorising.ca