M
Mike Andrews
- Jan 1, 1970
- 0
In rec.radio.amateur.homebrew Tim Williams said:Come again?
When I see "GR", I think "General Radio", and salivate gently. They
made some really, really nice test gear.
In rec.radio.amateur.homebrew Tim Williams said:Come again?
When I see "GR", I think "General Radio", and salivate gently. They
made some really, really nice test gear.
Come again?
Tim
OK, then. A zener makes a poor noise source according to what I'm reading.
Noise.com used to sell off-spec diodes by the onesies for we poor peons to
play with, but for whatever reason that doesn't seem to be the case any
more.
Given that a zener (at whatever current) is a poor noise source, what is a
good source of electronic broadband noise from low HF through high UHF --
say, 5 to 500 MHz.? (No smart remarks about spark gaps.)
I watched the money-making portable test division in Phoenix
get trashed by the shit-heads in Massachusetts... now you know
_part_ of the source of my animosity toward Massa2shits ;-)
Mike Andrews said:When I see "GR", I think "General Radio", and salivate gently. They
made some really, really nice test gear.
Winfield said:That's one thread, perhaps the first in a series. That thread
doesn't have the waveforms I was referring to (although there
are some waveforms in posts 51 and 66). Tony, Bill, Roy and I,
and some others here wasted masses of time on this subject over
a period of a few months, eight and a half years ago. . .
Jim Thompson wrote...
That's an amazing extension. Plenty of healthy Massachusetts
companies have been sucked dry by their out-of-state owners.
Obviously the ability to mis-manage a company from a distance
is not notably a Massachusetts sin, unless you're obsessed with
the Harvard Business School's modest influence on the issue.
Wouldn't a zener running in (or near) the (easily seen on curveRST said:OK, then. A zener makes a poor noise source according to what I'm reading.
Noise.com used to sell off-spec diodes by the onesies for we poor peons to
play with, but for whatever reason that doesn't seem to be the case any
more.
Given that a zener (at whatever current) is a poor noise source, what is a
good source of electronic broadband noise from low HF through high UHF --
say, 5 to 500 MHz.? (No smart remarks about spark gaps.)
Jim
We took
Robert Baer said:Wouldn't a zener running in (or near) the (easily seen on curve
tracer) negative resistance mode have lots of noise?
John said:What's the light-flash waveform look like from a spark plug? What do
you drive it with?
Don't you have gobs of femtosecond lasers around your place?
John
It is sadly true that many of the old-line Rt 128 companies are
gone... DEC, Data General, GR, Sensitive Instruments, Clevite,
Transitron, probably others. Have others popped up to take their
place? Analog Devices, for sure.
It is sadly true that many of the old-line Rt 128 companies are
gone... DEC, Data General, GR, Sensitive Instruments, Clevite,
Transitron, probably others.
Have others popped up to take their place?
Why sure. Can you red Chinese tech manuals?
We have scads of large wealthy "newer" high-tech companies
headquartered here, that you may not often hear of, like
Thermo Electron, Bruker, Summit Technology, EMC, etc., and
others you do know, with a substantial presence, like Agilent.