In message 4fa5cd62.3000...@rubidium.dyndns.org, Magnus Danielson writes:
On 05/06/2012 02:11 AM, Poul-Henning Kamp wrote:
it's the GRI 90070 Edje chain, but the FS700 won't find the stations.
Try 74990M also
Tried it, no luck.
Sounds like you need better antenna.
Try the
In message 20120506021212.ec21a800...@ip-64-139-1-69.sjc.megapath.net, Hal
Murray writes:
p...@phk.freebsd.dk said:
If you cannot apply the negative sawtooth, you will get better results by
disciplining almost any random quartz xtal, ovenized or not to the GPS,
divide it down to PPS and then
On 05/06/2012 08:47 AM, Poul-Henning Kamp wrote:
In message20120506021212.ec21a800...@ip-64-139-1-69.sjc.megapath.net, Hal
Murray writes:
p...@phk.freebsd.dk said:
If you cannot apply the negative sawtooth, you will get better results by
disciplining almost any random quartz xtal, ovenized
Poul
I agree, 1PPS from many GPS engines, if sawtooth correction is not used, can
add all sorts of errors like hanging bridges.
Some can sound really bad, like non zero bias over short or very long time
periods and 12 ns of early or late wonder.
It's interesting to talk about these problems,
Here is a different tactic for disciplining Rb from GPS/TXCO -
Consider the relatively (relative to a second) long stability of
an Rb oscillator and the not-so-good stability of GPS. Perhaps
using 1 PPS for a sampling period for stabilizing Rb is way too
short. Maybe 1000 seconds is better.
The paper should really be titled Another way to discipline your Rb to GPS.
Wouldn't it make more sense given the phase noise in the Rb to base your
correction on a moving average diffence.
1) Reduce the Rb phase noise
2) Carefully make it a multiple of a day to cancel diurnal effects of the
On 05/06/2012 09:01 PM, Bill Hawkins wrote:
Here is a different tactic for disciplining Rb from GPS/TXCO -
Consider the relatively (relative to a second) long stability of
an Rb oscillator and the not-so-good stability of GPS. Perhaps
using 1 PPS for a sampling period for stabilizing Rb is way
The Nortel NTGS55A receivers output an undocumented 8F-AE data packet every
second. The Palisade receivers also output an 8F-AE packet, but it is totally
different. The last 8 bytes appear to be two 32-bit floating point numbers
that change every packet. One of the numbers appears to
http://www.ebay.com.au/itm/Antelope-Audio-Isochrone-10M-Rubidium-Atomic-Clock-/270809581736?pt=LH_DefaultDomain_0hash=item3f0d8248a8
Make sure you read the description to discover what it's being sold for.
My chuckle for the day.
Jim Palfreyman
___
It makes the audio sound better. Just like tubes and oxygen free speaker
cables.
Darn he has 8 offers already. Must say the front panel is much nicer then
what I build.
Regards
Paul
On Sun, May 6, 2012 at 10:39 PM, Jim Palfreyman jim77...@gmail.com wrote:
For the 'Golden Ear' crowd
An Audiophool and his money are easily parted by a good sales pitch.
The same suckers buy $250,000 turntables and solid silver speaker wires.
YMMV,
-John
Thanks for the analysis, Magnus.
A few other time constants might be interesting -
When a step change is made to the control voltage or current,
how long does it take for the oscillator to settle down to a
new value? Is it instantaneous compared to a second?
Do different components in different
Swiss-made? FEI 5660? PRS10? US $5,995? Oh, dear indeed.
Nice to know the fiscal predators have predators to bite 'em.
Bill Hawkins
-Original Message-
From: Jim Palfreyman
Sent: Sunday, May 06, 2012 9:40 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Oh
Instead of making fun of the web site, we all need to be more entrepreneurial
so that we can fleece, errr, that is, offer a superior product to the
audiophiles out there. Think of the add copy:
You don't want to rely on a drifty, low accuracy, secondary rubidium standard
for your audio
It could not be any good if it were any cheaper!
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Jim Palfreyman jim77...@gmail.com
Sender: time-nuts-boun...@febo.com
Date: Mon, 7 May 2012 12:39:48
To: Discussion of precise time
Use 12AT7 tubes for the crystal oscillator and distribution amplifier.
On Sun, 6 May 2012 20:39:32 -0700 (PDT), Tom Curlee
tcur...@sbcglobal.net wrote:
Instead of making fun of the web site, we all need to be more entrepreneurial
so that we can fleece, errr, that is, offer a superior product to
Anyone remember the Tice Clocks?
http://www.stereophile.com/miscellaneous/784/index.html
Nine pages of audiophile phun...
Dave
-Original Message-
From: time-nuts-boun...@febo.com
[mailto:time-nuts-boun...@febo.com] On Behalf Of Tom Curlee
Sent: Sunday, May 06, 2012 8:40 PM
To:
These people are amazing.
They refuse to do any kind of double-blind A/B testing.
My favorite thing is that they are trying to extract the maximum fidelity
from an album or CD that was recorded in a studio with little or no AC power
conditioning, whose recording consoles were wired with the
Example Packet:
10 8F AE 01 00 00 09 00 02 00 00 00 41 00 01 F4 00 5A 00 00 3D AE 81 20 3B F2
14 BD 10 03
Packet Breakdown:
10 8F AE 01 00 00
09 = LED Status
5 LED's on front panel
Yellow
Red
Green
Locked
Holdover
01 Yellow
02 Red
03 Yellow, Red
04 Green
05 Yellow, Green
06 Red, Green
07
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