Hi all,
I would like to know some more about this project's status and
cosistency.
This seems to be the total solution to ours exspectation about Adev
measurements.
The question I have are:
What is the project plan about the paper production to describe or/and
sell the HW?
Is the project a
We are working on a documentation package and it will the thanks to Didier
on his site. At this time three items are available and tested. A basic
dual mixer based on the original NBS paper with modifications, a 2 channel
counter and a 4 channel counter. Juerg is working on a LCD display
Hi Bert,
many thanks for your answer. It si complete and I have a better idea on
what you are working on.
I am sure your work is important for all the time and frequency
hobbiest.
If you need some more help to develop the project please make a list of
your needed, may be in the webb we can
I have been using an minicircuits mixer as a phase detector for measuring
low frequency(5-10MHz) and it is usually good enough. But when I want to
measure 100MHz the sensitivity of the mixer decreases a lot, so when I want
to measure some really low noise 100MHz(Pascall -178dBc floor with 18dBm
About:
{
Date: Thu, 22 Nov 2012 22:26:24 +0100
From: Fabio Eboli fabi...@quipo.it
To: time-nuts@febo.com
Subject: [time-nuts] MT3339 chipset in Globaltop's FGPMMOPA6H
Message-ID: 2012112624.71854hb9oslin...@webmail.micso.net
Content-Type: text/plain; charset=ISO-8859-1; DelSp=Yes;
The old Watkins Johnson M9 series was the state of the art for
stacked diode mixers. You can still get the M9E and M9H from
MaCom Technology Solutions. The M9E is better, but only if you
have the 1/2 watt! of LO drive needed. As you have done already,
it is probably possible to homebrew
Hi Anders, isn't this format exactly what is inside the high level mixers
(spec'e +17dBm) from Minicircuits?
Alan
G3NYK
- Original Message -
From: Anders Time anderst...@gmail.com
To: time-nuts@febo.com
Sent: Friday, November 23, 2012 3:42 PM
Subject: [time-nuts] Best phase detector /
There were several companies that made WWV clocks that worked by
recovering the 100 Hz time code information. ESE, who makes
broadcast related products, including clocks, was one. I remember
installing several card types manufactured by various companies that
worked in computers. I still
NIST have shown (at least at 10MHz) that the high level mixers they
tested are noisier than the ZRPD1.
Bruce
Alan Melia wrote:
Hi Anders, isn't this format exactly what is inside the high level
mixers (spec'e +17dBm) from Minicircuits?
Alan
G3NYK
- Original Message - From: Anders
On 11/23/2012 9:38 AM, Bruce Griffiths wrote:
NIST have shown (at least at 10MHz) that the high level mixers they
tested are noisier than the ZRPD1.
Bruce
Do you have a citation to where they said that?
What you quoted doesn't make sense, at least, out of context.
We need to clarify phase
Hello Jacques,
what revision of the module do you have?
On adafruit's page, under Downloads tab
you can see that they use 3 different GPS units:
PA6B for first revision, built around an MT3329
PA6C for the second and PA6H for the third,
both with MT3339 chipset.
Where did you see the different
Not unreasonable Bruce..no free lunches etc. :-))
Alan
G3NYK
- Original Message -
From: Bruce Griffiths bruce.griffi...@xtra.co.nz
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Friday, November 23, 2012 5:38 PM
Subject: Re: [time-nuts] Best
A couple of weeks ago I posted about problems with my HP 10638A
degausser (that's used with the 5061 Cs units to remove residual
magnetism from the high-performance option tube).
My troubleshooting indicated that the problem was likely in the op-amp
that is used to generate an exponentially
Congrats John. Lots of fun. The interesting thing is you most likely have
enough info so that anyone could build a degausser if needed. It doesn't
sound to bad.
Regards
Paul WB8TSL
On Fri, Nov 23, 2012 at 2:06 PM, John Ackermann N8UR j...@febo.com wrote:
A couple of weeks ago I posted about
On 11/23/12 8:28 AM, Burt I. Weiner wrote:
I still have two of the Heathkit clocks, but alas, they won't work at
home because of my standards.
Burt, K6OQK
Are your equipment and interconnects leaking that badly?
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Hi Anders,
On 11/23/2012 04:42 PM, Anders Time wrote:
I have been using an minicircuits mixer as a phase detector for measuring
low frequency(5-10MHz) and it is usually good enough. But when I want to
measure 100MHz the sensitivity of the mixer decreases a lot, so when I want
to measure some
A friend just got a C-MAC Sine 10MHz Double Oven Oscillator and asked
me to see if anyone here knows how to hook it up and get it working.
Joe Gray
W5JG
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Magnus Danielson wrote:
Hi Anders,
On 11/23/2012 04:42 PM, Anders Time wrote:
I have been using an minicircuits mixer as a phase detector for
measuring
low frequency(5-10MHz) and it is usually good enough. But when I want to
measure 100MHz the sensitivity of the mixer decreases a lot, so when
Hi Joseph,
I picked one up a bit ago finally found connection info on this ebay page:
http://www.ebay.com/itm/CMAC-10MHz-ocxo-oscillator-square-wave-sc-cut-/180911738566
Seemed to work fine for me (though have not yet attempted any frequency
compensation; just left VFC floating).
Quick
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