Hi George,
I like , I want to buy it
I live in Italy and I collect and made by myself some equipment of time
and frequency standard.
Please can you quote me the shipping cost to Italy?
thankyou
Lucianpo
timeok-it
Il 2012-10-15 21:57 George Race ha scritto:
I still have the HP 115BR Clock. It
The Saga just goes on...! INFO only.
Rgds Ernie.
Lightsquared Returns With New Proposal For GPS Fix
October 4, 2012
The company asked the FCC to modify its license application so it can use its
5MHz of spectrum that haven’t caused GPS concerns.
LightSquared, the now bankrupt
Hey guys, new to the group here and wanted to throw a question out there. I
just picked up an HP 58503A and hooked it all up. I have it connected to my
computer and I can see the system status via satstat and all looks to be
working correctly. However, I notice that there is distortion on the
Mark,
Are you loading the 10Mhz output with 50 Ohms when you measure it?
Said
Sent from my iPad
On Oct 16, 2012, at 6:52, Mark Danon mdan...@gmail.com wrote:
Hey guys, new to the group here and wanted to throw a question out there. I
just picked up an HP 58503A and hooked it all up. I
I guess this it what they would call a rookie move? WOW, i feel like an
idiot. I just loaded it down with a 50 ohm load and looks perfect. Thanks
for enlightening me.
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I overlooked it also. Glad the problem is resolved.
Thomas Knox
Date: Tue, 16 Oct 2012 12:31:13 -0400
From: mdan...@gmail.com
To: time-nuts@febo.com
Subject: Re: [time-nuts] Hp 58503A
I guess this it what they would call a rookie move? WOW, i feel like an
idiot. I just loaded it down
Had some interesting times with the HP-113B clock, but had to
mount it in an insulated cabinet with an insulated door because
it made so much 1 KHz mechanical noise. No wonder the housing
for the assembly is so heavy.
Did they find a quieter motor for the 115B?
Bill Hawkins
-Original
Thanks for all the responses.
Well it was even simpler than I expected, All I had to do was a cold reset
followed by an autocal. the unit now will power-up with the display active.
Apparently it was not a hardware error at all.
I now want to calibrate the internal 10 MHz reference. I read
Well, that a few of you were nice enough to help me understand my HP
58503A, I wonder if anyone out there has some parts for this unit.
Specifically, I was hoping someone had an Option 1 Kit, the digital display
and keypad? Any thoughts, suggestions? Thanks, Mark.
No problem, happens to me too some times,
usually the 10MHz Sine should be loaded with 50 Ohms, and the CMOS/TTL 1PPS
pulses should be run open-ended (1M or higher)..
I say usually.. because there are cases where proper termination is
critical such as LVDS 1PPS outputs.. and where the
I just loaded it down with a 50 ohm load and looks perfect.
One of my design pet peeves is not anticipating what users may
do. For example, not anticipating that someone might terminate an
output in a high impedance rather than in the rated impedance, or
leave unused outputs
Use the Sample Size switches
Juerg Koegel
2012/10/16 Eric Haskell eric_hask...@hotmail.com:
Thanks for all the responses.
Well it was even simpler than I expected, All I had to do was a cold reset
followed by an autocal. the unit now will power-up with the display active.
Apparently it
I found that a lot of the 1KHz noise on mine was caused
by a bad ball bearing in the motor. I replaced it with
a new bearing and the 1KHz was then only loud.
It isn't the motor, it is the 1KHz drive. Airplanes
with 400Hz 3 phase motors in the instrumentation are
similarly loud.
-Chuck Harris
Hi:
I'd characterize the noise as obnoxious to the point I could not have my 113AR
in the house, but only the garage.
http://www.prc68.com/I/TF_rack.html
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
Chuck Harris wrote:
I found that a lot of
Hello everyone,
I started a new project for myself where I would use the RasperryPi
Linux board
as a NTP server.
My goal is to design a custom board for the Pi and mount a GPS
receiver on it. With this combination, I should be able to configure
NTP for the Pi and thus have the Pi act as
uBlox LEA-5T, LEA6-T? SkyTraq Venus5?
On Tue, Oct 16, 2012 at 11:06 PM, x...@darksmile.net wrote:
Hello everyone,
I started a new project for myself where I would use the RasperryPi Linux
board
as a NTP server.
My goal is to design a custom board for the Pi and mount a GPS receiver on
I have a similar setup and running now (minus the custom pcb) using a
Venus638FLPx module from Sparkfun (~$50 + antenna). The module was easy to
configure and had a decent 1PPS output. So far, everything is working
(hardware-wise, I still have some NTP settings to tweak). I have the 256MB
On 10/16/2012 05:06 PM, x...@darksmile.net wrote:
My goal is to design a custom board for the Pi and mount a GPS receiver
on it. With this combination, I should be able to configure NTP for the
Pi and thus have the Pi act as a Stratum 1 NTP server.
The new RasberryPI has 512MB memory so it
Michael,
Thank you for your most valuable information.
This is why time-nuts is so amazing!
My goal is actually two-fold.
First, I would like to have a NTP server that I can easily
hook up (well, as easily as possible) without
dedicating a Linux server each time.
My personal use would require
I've been looking at the Raspberry Pi for a number of projects as well, and
have been running one for a few weeks.
My take on the early stability concerns/complaints are that the majority of
those are due to poor power supplies, with some assistance from the Raspberry
Pi design.
Measure
Michael Tharp g...@partiallystapled.com wrote
[RE: raspberry pi ntp server]
It's not a terrible idea, but the RPI has a USB ethernet transceiver so
in addition to the latency/jitter of the ethernet it also has the
latency/jitter of the USB.
I've been playing with a pair of Raspberry Pi ntp
Annoyance with small Linux boards:
My single biggest annoyance is that
all the I/O connectors are coming out from
all 4 directions.
What I mean is this:
It would be nice to have ethernet+LEDs+USB+VGA(HDMI)
come out from one side, and Power/I/O/RS232
from the opposite side.
This way if I make
On 10/16/2012 06:28 PM, sh...@impsec.net wrote:
I'm a junior time-nut at best but it looks to me like jitter from the
USB Ethernet is acceptably low, based on ntpq -p anyway:
It's a minor problem at worst. There are many worse conflating factors
and NTP adjusts very slowly anyway to deal with
On Tue, Oct 16, 2012 at 3:26 PM, x...@darksmile.net wrote:
Michael,
Thank you for your most valuable information.
This is why time-nuts is so amazing!
My goal is actually two-fold.
First, I would like to have a NTP server that I can easily
hook up (well, as easily as possible) without
One does NOT need a dedicated server for NTP. NTP can run on a linux system
that is also a web and mail server or on e linux desktop system that you
use for web surfing and web browse ring, just as long as the box stays
running and you don't turn it off.
It's been discussed before, but
Coincidentally, I just ordered a R-Pi yesterday. I have other
potential uses for it, not NTP. If you are not in a hurry, it is
possible to find the Soekris boards on ebay for a decent price. I got
one last year, in a case, for $50.
Joe Gray
W5JG
___
On Tue, Oct 16, 2012 at 4:37 PM, Hal Murray hmur...@megapathdsl.net wrote:
One does NOT need a dedicated server for NTP. NTP can run on a linux system
that is also a web and mail server or on e linux desktop system that you
use for web surfing and web browse ring, just as long as the box
Question: What GPS timing module should I go with? No more Motorola Oncore
so what's best right now? Who sell modules? What are the price ranges?
One option would be just a DE-9 connector with power on pin ??? (I forget).
You may need inverters and/or level shifters on Rx and Tx.
That
The miniITX mobos are quite impressive.
There is no argument there.
However, My simple idea was this:
Since I want to keep time at 3 separate locations
and wanted stratum 1 NTP, I didn't want overkill.
Actually my reason for 3 different locations is simple:
Internet is flakey some places and
Err... I meant packs of cigarettes
NOT cartons :)
Quoting x...@darksmile.net:
The miniITX mobos are quite impressive.
There is no argument there.
However, My simple idea was this:
Since I want to keep time at 3 separate locations
and wanted stratum 1 NTP, I didn't want overkill.
Actually my
By the way, you need not use a USB serial adapter. Several folks are doing PPS
on the gpio pins.
Take a look here
https://github.com/davidk/adafruit-raspberrypi-linux-pps
And here
http://www.frambozenbier.org/index.php/raspi-community-news/4439-george-lu-on-ntp-pps
On Oct 16, 2012, at
Hello everyone,
I started a new project for myself where I would use the RasperryPi Linux
board as a NTP server.
[]
Question: What GPS timing module should I go with? No more Motorola Oncore
so what's best right now? Who sell modules? What are the price ranges?
Your comments are most
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