"John Larkin" wrote in message
news
Old vintage noise figure meters used gas tubes. And I think there was
a pencil tube that mounted in a waveguide and made shot noise.

I've got a gaussian noise generator, some SS in the power supply, tubes
everywhere else, found it on the curb and apparently works. Uses a pair of
6D4 thyratrons in magnetic fields for the noise.

Tim

--
Deep Fryer: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms

On Wed, 11 Jan 2006 14:53:07 -0600, "Tim Williams"
wrote:

"John Larkin" wrote in message
news
Old vintage noise figure meters used gas tubes. And I think there was
a pencil tube that mounted in a waveguide and made shot noise.

I've got a gaussian noise generator, some SS in the power supply, tubes
everywhere else, found it on the curb and apparently works. Uses a pair of
6D4 thyratrons in magnetic fields for the noise.

Tim

GR?

John

"John Larkin" wrote in message
...
I've got a gaussian noise generator, ...

GR?

Come again?

Tim

--
Deep Fryer: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms

In rec.radio.amateur.homebrew Tim Williams wrote:
"John Larkin" wrote in message
...
I've got a gaussian noise generator, ...

GR?

Come again?

When I see "GR", I think "General Radio", and salivate gently. They
made some really, really nice test gear.

--
Mike Andrews, W5EGO

Tired old sysadmin

On Wed, 11 Jan 2006 23:47:37 +0000 (UTC), "Mike Andrews"
wrote:

In rec.radio.amateur.homebrew Tim Williams wrote:
"John Larkin" wrote in message
...
I've got a gaussian noise generator, ...

GR?

Come again?

When I see "GR", I think "General Radio", and salivate gently. They
made some really, really nice test gear.

And then let themselves get sucked, by marketing, into large
mainframe-based testers, and lost their ass.

I watched the money-making portable test division in Phoenix get
trashed by the ****-heads in Massachusetts... now you know _part_ of
the source of my animosity toward Massa2****s ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

Jim Thompson wrote...

I watched the money-making portable test division in Phoenix
get trashed by the ****-heads in Massachusetts... now you know
_part_ of the source of my animosity toward Massa2****s ;-)

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.


--
Thanks,
- Win

On 11 Jan 2006 17:52:16 -0800, Winfield Hill
wrote:

Jim Thompson wrote...

I watched the money-making portable test division in Phoenix
get trashed by the ****-heads in Massachusetts... now you know
_part_ of the source of my animosity toward Massa2****s ;-)

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.

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.

John

"Mike Andrews" wrote in message
...
I've got a gaussian noise generator, ...

GR?

When I see "GR", I think "General Radio", and salivate gently. They
made some really, really nice test gear.

Ah, had a feeling it was something about a manufacturer...

Unfortunately(?) no, it appears to be Elgenco, and I also now remember not
finding much info on this device after I picked it up. It's a rack mount
unit BTW.

Tim

--
Deep Fryer: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms

On Wed, 11 Jan 2006 17:00:09 -0600, "Tim Williams"
wrote:

"John Larkin" wrote in message
.. .
I've got a gaussian noise generator, ...

GR?

Come again?

Tim

Is it a General Radio noise generator? I have an old GR noise
generator, and the manual talks about moving the magnet around to
optimize something.

John