Hi
What is your goal?
Do you want something that works as well as a $125 eBay GPSDO?
What is your end application?
Do you have a cheap source of 100 Hz wide 10 MHz crystal filters?
The main problem with a simple approach like the one you propose is that the
filter is probably to
David,
the 82335 drivers came with the complete SW package that I sent you.
I don't know if the drivers and SW are running with any more recent or
non MS versions than MS-DOS 6.0.
But, it's as easy to find out as it gets. Back in the day the whole OS
fitted on a floppy disk and 640k of memory,
Many of the Navman T60-D125 units are floating around on various sales
sites. Unfortunately, some come with built in problems and poor
documentation.
Here are some things that I have found in working with one for the past
year.
1) If you have found that communicating with the unit on the
Hi Bob,
Thanks for taking the time to explain the 4ns and 20ns wanders. I have just
been calling them constellation errors without being able to explain it
better than that. I've also wondered how much of the 20ns, if any, is
attributable to the PRS-45A.
I still don't have the antenna
Hi
Let’s step back a bit:
Your module is accurate to maybe 2 ns over a short period of time and something
in the 10 to 20 ns range
over 24 hours. The 2 ns comes from a variety of issues. The 20 ns comes mainly
from the ionosphere.
One example of a part of the 2 ns - the satellite positions in
As anyone with a Nortel GPSTM knows, it's a close cousin to the Thunderbolt but
not exactly identical. Notably, coming from a CDMA environment, the unit has an
even second output, aka PP2S, aka 0.5pps, aka 0.5Hz, etc. (Hoping to make
this searchable...) There are software commands to configure
Hi Nate,
Nice page. Thanks for sharing your work.
The Nortel units are a reasonable and slightly cheaper alternative to a TBolt,
if you don't mind the much larger size, mass, and non-standard connector issues.
The performance depends somewhat on which vendor's oscillator was used. I
tested a
The easiest way of getting a new well supported version of
DOS, is to download FreeDOS. Anything that worked on any
version of MSDOS will run under FreeDOS... and so much more!
-Chuck Harris
davidh wrote:
Folks,
I'm also working on getting the MSDOS version running. What is the most recent
Folks,
I'm also working on getting the MSDOS version running. What is the most
recent version of DOS that people have found to work with the A 01.01
version.
Also, can anyone advise where the command drivers for the 82335 can be
found?
Cheers,
david
Hi Adrian,
Got the spec lines
With all this talk of the LT6957 I'm wondering if there's interest in a re-spin
of my frequency divider with one of these at the front end instead.
Regards,
David Partridge
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bruce Griffiths
Sent: 26 May
Ole -
These became obsolete in 1999. Actually led to development of TAC-2 board
(TAPR) in 1996.
Tom Clark, K3IO could tell you about the FTS 8400 usage with the
VLBI large dish array in 1980s and 1990s.
Scroll down the TAC32Plus software notes for discussion on Trimble FTS 8400.
Moin Tom,
On Tue, 26 May 2015 05:09:05 -0700
Tom Van Baak t...@leapsecond.com wrote:
The performance depends somewhat on which vendor's oscillator was used.
I tested a bunch here:
http://www.leapsecond.com/pages/nortel/
The phase noise plots look a bit peculiar for unit 2 and 4.
Do you have
descoubes kirjoitti:
I am very pleased to inform you that the 1995 year bug on the TS2100 has
been solved. You will have to replace the existing Trimble ACE III
GPS receiver by our N024 with special firmware.
Does this also correct the 1 sec offset caused by upcoming leap second?
To remind,
Hi Bob S,
An HOA can be a daunting problem, but not one that cannot be
solved with a little guile.
Every house I have ever seen that has modern plumbing has a few
vent stacks on the roof. Would the HOA even notice if yours
sprouted another one dark weekend evening?
All the kit you need to add
Dear All
This is the first time I posted in this forum so please forgive me if its
already discuss before
I like to ask You who has more experience about my plan for USD75 GPSDO
before I explain my plan let me tell You some real world limitation
1. The parts I choose must be available in local
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