rich...@karlquist.com said:
> The tester they used for ADEV consisted of a special 10811 that was 500 Hz
> off frequency driving a dual mixer box (Model 10514?) which produced a 500 Hz
> beat note, which then drove an ADEV system (model 5490?). Only a few of the
> offset 10811's were produced
On 4/2/22 4:47 PM, Joseph Gwinn wrote:
On Sat, 02 Apr 2022 03:27:06 -0400, time-nuts-requ...@lists.febo.com
wrote:
time-nuts Digest, Vol 216, Issue 3
11. Re: Low Phase Noise70 10 MHz bench signal source sought
(Richard (Rick) Karlquist)
Date: Fri, 1 Apr 2022 19:12:07 -0700
From:
On Sat, 02 Apr 2022 03:27:06 -0400, time-nuts-requ...@lists.febo.com
wrote:
time-nuts Digest, Vol 216, Issue 3
> 11. Re: Low Phase Noise70 10 MHz bench signal source sought
> (Richard (Rick) Karlquist)
>
> Date: Fri, 1 Apr 2022 19:12:07 -0700
> From: "Richard (Rick) Karlquist"
>
There is also another disciplined geyser, the Lady Knox Geyser on the
north island in New Zealand. Goes off every day at 10:15am. It's
quite a sight just to watch the empty parking lot fill up with cars
and tour buses in about 20 minutes, then after the show everyone goes
on their way.
Regards,
Hi
Usually the best / quick / easy way to evaluate something like
a two channel counter is do it with a pair of signals that are independent
from each other, but very close to the same frequency. Rb’s are often
used, but the technique is not specific to them.
You feed a PPS ( or whatever ) from
Yes, Jim Johnson (who worked for Len Cutler) worked on this hero
experiment. IMHO, it was a boondoggle from the get go. BTW,
this wasn't Jim's fault. I guess you could blame Len if you
needed to.
1. You might think that we had the capability to select 10811's
as they came off the line.
During evaluation of a two channel TC that can measure simultaneously the
phase of two external oscillators the need came to understand the quality
of the internal reference while eliminating (some) uncertainty of the
performance of the two external oscillators.
The 3 cornered hat method comes to
I have encountered GPS active antennas that are unstable and oscillate,
especially when not mounted on a metal backing.One even oscillated
occasionally when it did have a ground plane. Because the ceramic patch
antenna is narrowband and has a high Q, the spurious oscillation is
relatively
On 4/2/22 9:42 AM, Tom Van Baak wrote:
Yes, I believe hp did what you propose in their Santa Clara cesium
test lab. It was an ensemble of selected 10811 oscillators tightly
phase locked to improve short-term stability and phase noise. Rick
might know the details.
During a tour I saw the
On 4/2/22 9:42 AM, Tom Van Baak wrote:
Yes, I believe hp did what you propose in their Santa Clara cesium
test lab. It was an ensemble of selected 10811 oscillators tightly
phase locked to improve short-term stability and phase noise. Rick
might know the details.
During a tour I saw the
Yes, I believe hp did what you propose in their Santa Clara cesium test
lab. It was an ensemble of selected 10811 oscillators tightly phase
locked to improve short-term stability and phase noise. Rick might know
the details.
During a tour I saw the instrument rack but was unable to peek
On 4/2/22 3:31 AM, Leon Pavlovic wrote:
Hello to all,
as Gerhard already mentioned, the 1/f data of transistors is really a
kind-of black magic stuff and almost never present in the datasheets.
Not only that, but it potentially changes from lot to lot.
Lately, I've been seeing papers using
On 4/1/22 2:12 PM, Joseph Gwinn wrote:
I'm looking for suggestions for AC-powered 10 MHz sinewave laboratory
signal sources with very low phase noise, having a noise floor below
-170 dBc/Hz. Rubidium is desired, but not essential. Reliability
and durability in lab use is essential.
Which
Hello to all,
as Gerhard already mentioned, the 1/f data of transistors is really a
kind-of black magic stuff and almost never present in the datasheets.
But it is very important for the designer of the ultra low-PN crystal
oscillators and isolation amplifiers. Manufacturers like Wenzel and
Am 2022-04-02 10:54, schrieb David C. Partridge:
If they are all in the same enclosure and powered from the same supply
how are you going to prevent injection locking?
Or do you want them to injection lock?
I have 2 MV89 references in the 19" box that houses my Timepod and a
huge switchable
Hi,
There are several different 19 inch racked variant on the AXTAL website
www.axtal.com
Best regards
Bernd
-Ursprüngliche Nachricht-
Von: Joseph Gwinn [mailto:joegw...@comcast.net]
Gesendet: Freitag, 1. April 2022 23:12
An: time-nuts@lists.febo.com
Betreff: [time-nuts] Low Phase
If they are all in the same enclosure and powered from the same supply how are
you going to prevent injection locking?
Or do you want them to injection lock?
D.
-Original Message-
From: g...@hoffmann-hochfrequenz.de
Sent: 02 April 2022 08:22
To: Discussion of precise time and
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