Hi
There are a variety of VCXO's and TCVCXO's on the Mouser site. Prices seem to
range from $3 to $10 for the reasonable candidates.
http://www.mouser.com/ProductDetail/Fox/FOX924B-1/?qs=sGAEpiMZZMsBj6bBr9Q9afDupvxlfd2QBmF8W0236Ww%3d
Is one of the many. It runs at 10 MHz, CMOS output, and
If I'm not mistaken, the oscillator frequency needs to be an integer multiple
of 240 KHz.
Dale
Sent from my iPhone
On Mar 29, 2013, at 8:37, Bob Camp li...@rtty.us wrote:
Hi
There are a variety of VCXO's and TCVCXO's on the Mouser site. Prices seem to
range from $3 to $10 for the
The data sheet indicates the Fox924B is not voltage controllable,
wever. -Don
-Original Message-
From: Bob Camp
Sent: Friday, March 29, 2013 7:37 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] WWVB d-psk-r update. Seems a reasonable
FYI: Yet another use for GPS timing signals is proposed:
http://bits.blogs.nytimes.com/2013/03/28/a-marshall-mcluhan-approach-to-weather-forecasting/
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Hi
Silly me to not dig all the way to the bottom of the data sheet ….
Looks like the auction sites may be the better choice.
Bob
On Mar 29, 2013, at 9:35 AM, dlewis6767 dlewis6...@austin.rr.com wrote:
The data sheet indicates the Fox924B is not voltage controllable, wever.
-Don
Looking at e-pay (nobody here seems to refer to it by it´s name... don´t
know why.. any relationship to Sauron?) I found several items from HP
named samplers, like:
http://www.ebay.com/itm/Agilent-5086-7961-Sampler-50GHz-/120789801136
Indeed thats the problem. The VCO needs to be available grabbing something
from ebays good for me but not you. Also the oscillator does need to be an
integer of 240 Khz and Ideally divide on a separate chain to 1 or 2 Mhz so
it could be multiplied to 5 or 10 Mhz as an example. Though for the
If the schematics are available then you can reverse engineer a solution or
adaptation.
the other thing I do is hunt down the hp journal for the device that used
them and when it was introduced. Often the article will give you a fair
hint as to whats going on.
However the real detail of sample
I thought that would work too.
Look at this page:
http://ko4bb.com/Manuals/03)_Manual_and_Test_Equipment_Links.php
The tone may reflect some of my frustration. Please note that it is not really
fine print and not exactly buried at the bottom of the page. Yet I get emails
several times a week
Hi all,
I've got a Symmetricom TimeGPS-LLR module which appears to be a cool toy.
Inside I found a X72 rubidium oscillator. The module has a 2006 date
code and appears to be brand new.
The Rb is also 2006 date-coded and should have the 1 PPS capability.
It also came with the control software
Hi
Too much tuning range is easy enough to fix. Use a pot to set it on frequency
and then hook it to the rest of the stuff with a fixed resistor. The gotcha
would be if the poor thing drifts so much that it *needs* the wide range to
stay in lock.
My guess is that you could buy a hundred
FYI: Yet another use for GPS timing signals is proposed:
http://bits.blogs.nytimes.com/2013/03/28/a-marshall-mcluhan-approach-to-weather-forecasting/
==
It's already been done! GPS occultation sensors have been fitted to Metop-A
and Metop-B satellites, which
Hi
I haven't seen one of the units you have. Other similar boxes from the same
people are built to frequency. Unless you want to change between harmonically
related frequencies, it's more than a jumper or firmware setting. You swap both
parts and firmware.
Bob
On Mar 29, 2013, at 11:38 AM,
This would work. I know it has been tested in space already using a tiny
cube-sat but for foreasting you's need a lot of these. That is not to
bad because they are cheap and you could mass produce them. The real
problem is the very short live of a low orbit satellite. You need t keep
the
On 3/29/13 9:09 AM, David J Taylor wrote:
FYI: Yet another use for GPS timing signals is proposed:
http://bits.blogs.nytimes.com/2013/03/28/a-marshall-mcluhan-approach-to-weather-forecasting/
==
It's already been done! GPS occultation sensors have been fitted
Em 29/03/2013 12:26, paul swed escreveu:
If the schematics are available then you can reverse engineer a solution or
adaptation.
the other thing I do is hunt down the hp journal for the device that used
them and when it was introduced. Often the article will give you a fair
hint as to whats
COSMIC and (coming soon) COSMIC-2 also do GPS occultation.
Yes, but COSMIC is not a constellation of 12 satellites and it is not as
cheap either. These guys want to put up 12 satellites at a total cost of
only $160M
--
Chris Albertson
Redondo Beach, California
Yes, they're all online. Here's the link:
http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/hpjindex.html
The best way to find a model # would be to use google's site: command
with the model # like this:
site:www.hpl.hp.com/hpjournal 83481a
Ed
On 3/29/2013 2:09 PM, Daniel Mendes wrote:
Em
I wonder if you cannot do this same work from the ground. Has anyone
tried
tracking single GPS satellites from the ground using very high gain
tracking antenna.
Many times. USAF does this each time they launch a new GPS satellite, to
check out all the kit in a high-res view before they switch
On 3/29/13 2:36 PM, Chris Albertson wrote:
COSMIC and (coming soon) COSMIC-2 also do GPS occultation.
Yes, but COSMIC is not a constellation of 12 satellites and it is not as
cheap either. These guys want to put up 12 satellites at a total cost of
only $160M
COSMIC-2 is a constellation of
In message 5155f30c.4080...@earthlink.net, Jim Lux writes:
COSMIC and (coming soon) COSMIC-2 also do GPS occultation.
GPS occultation as meteologic model input was first tested and
validated on the Danish Ørsted satellite:
http://en.wikipedia.org/wiki/%C3%98rsted_%28satellite%29
gps
In message 5156611d.6090...@earthlink.net, Jim Lux writes:
occultation is pretty heavily used now.. When you talk about weather
forecasting, they talk about what percentage of the variance is reduced
by adding source X, and I seem to recall that for GPS RO it's something
like 10-15%.. around
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