Alex is having email trouble so I'll post on his behalf.
He adds this useful resource to the discussion:
> http://audioworkshop.org/downloads/AMPLIFIERS_OSCILLATION_BJT_CIRCUITS.pdf
>
> 73
> KJ6UHN Alex
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time-nuts mailing list --
The transition frequency of a transistor is more of a ballpark figure of
merit than a device specific constant, as it is also a function of how the
device is biased. Since most amplifiers and oscillators need power gain to
operate, current gain is usually needed (though you could use voltage gain
You will find most if all of these units are using a Trimble 63090/73090/65256.
You will find a lot of good information on this EEVBLOG forum board
http://www.eevblog.com/forum/testgear/bg7tbl-gpsdo-master-reference/
if by chance it is a Symmetricom then
I am just getting into the precise time and frequency stuff. I thought I
should buy a GPSDO.
There are quite a few similar-looking ones on eBay, such as eBay number
281802105734
There is also a Trimble at 252162780444
Would either of these be OK for a newbie like me?
Richard
