I don't live in New Zealand. :)
Dan
> On Jun 29, 2017, at 1:05 PM, Gregory Beat wrote:
>
> Dan Watson (New Zealand) appears to have abandoned this Lucent KS-2436 Ref-0
> GPSDO project (standalone operation).
>
> Earlier this week, I noted Lucent KS-2436 units being sold on the TradeMe web
>
Hi,
Here's an interesting addition to the project once you get the serial
parser and display driver worked out. It is quite easy to generate the
$GPZDA NMEA message in your program. You can send this off to a Raspberry
Pi or BBB along with the PPS signal and drive an NTP server. :)
[image: Inline
Hi all,
Responding to a few comments:
- The DC-DC converter has the same pinout as a 7805. It would be possible
to substitute the linear regulator (as long as you handle the power
dissipation of course).
- I will likely switch to I2C for the LCD on the next revision.
- Adding an input for an ex
Hi all,
A few months ago someone on the list made mention of the PIC 16F1619,
prompting me to order a few to check out. It's an interesting little chip
with some nice peripherals. I decided to do a mains frequency monitor
project using it. The project is not quite complete, but you can read about
Hi,
The "Electronic Surprise Boxes" they sell are fun to sort through. You will
end up with a huge pile of junk resistors and such, but I have never been
disappointed in the other goodies I found. One box I received contained
about 40 oscillators in various frequencies. You often get a lot of rand
Hi all,
I saw this article about a hand-made clock, and thought some of you might
enjoy it. Called the Plock (plot clock), it is a 407-piece wooden clock
that writes the time. You really just have to see it in action to
appreciate it.
http://www.ablogtowatch.com/suzuki-kango-plock-wooden-automato
Hi all,
I worked out the schematic for the CTS OCXO. You can find it here:
http://syncchannel.blogspot.com/2016/03/schematic-of-cts-1960017-10mhz-ocxo.html
Best regards,
Dan W.
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ost likely make the temperature performance significantly worse. See
> the good old papers on the HP super ovens for all the details.
>
> Bob
>
> > On Feb 27, 2016, at 12:44 PM, Tom Miller
> wrote:
> >
> >
> > - Original Message - From: "Daniel
at 1:10 PM, Joseph Gray wrote:
> Nice teardown. I was looking at that listing just yesterday. I am tempted,
> but don't know what I'd do with 40.
>
> The real question is, how do they perform?
>
> Joe Gray
> W5JG
> On Feb 27, 2016 9:48 AM, "Daniel Watson&qu
Hi,
I'm sure many of you are tracking the cheap CTS 10MHz OCXOs available on
eBay right now. I purchased a case of them, and decided to crack one open.
I took pictures along the way, thinking that might be interesting to the
list. Here is the blog post if you are interested:
http://syncchannel.bl
Hi,
I had an interesting experience with a local cal lab when I took in my HP
5334B (Option 010). I'd recently purchased the unit and had no idea of its
calibration history. At the time I wasn't quite a time nut, and I didn't
own a reference to check frequency accuracy myself. I was hoping to get
if they are tinned already.
>
> Tim N3QE
>
> On Mon, Feb 1, 2016 at 9:58 PM, Daniel Watson
> wrote:
>
> > Hi,
> >
> > I purchased a pair of interesting glass envelope crystals for a project.
> > Here are some pictures:
> >
> >
> http://syncc
Hi,
I purchased a pair of interesting glass envelope crystals for a project.
Here are some pictures:
http://syncchannel.blogspot.com/2016/02/glass-envelope-quartz-crystals.html
Does anyone have an idea about what mount/socket I should buy for these? I
read a previous thread on the list about Bli
I'm curious if that code will perform the intended function (down to the clock
cycle) when compiled. A check in the simulator would be a good idea while the
TIA is busy.
If it doesn't give you the performance you are looking for, try programming it
in assembly, as was done for the PicDiv.
Dan
Hi,
Sadly my tbolt is sick as well. There is some fault that causes the processor
to constantly reset. I already had the outer screws undone, so I popped open
the case to look for the trimmer you need. There is indeed a solder blob on one
side of the oscillator, under which I would presume is t
Hi,
It just so happens I've been playing around with GPS week rollover on the
Tria GPS. I added an option to simulate the next rollover in 2019, and did
some experimentation with a REF-0. With this being a current topic in this
thread, I decided to do a quick write-up on it:
http://syncchannel.bl
Hi,
It looks like Synergy makes some really nice devices. Actually, I now know
first hand that they do. I'm sure their module would be an excellent choice
for some applications.
I've made some progress on my own REF-0 project and the Denuo GPS board.
I've also decided to expand the scope and tack
Hi,
The REF-0 will accept a PPS signal from a non-timing GPS. I use the u-blox
NEO-6M for a lot of my testing. That module can be had in the $12 range online.
I have also gotten the REF-0 to lock to a Venus GPS and an FE-5680B rubidium
standard.
Of course, using a less stable PPS signal will g
Gregory,
Thanks for your comments. You are absolutely right that a timing GPS module
is required to make this a proper Time-Nuts solution. I know that many on
the list have been thinking the same thing when they read my posts. Cost
alone is what has prevented me from going directly to that approac
Hi,
Here's a little progress report on my REF-0 project. Though there hasn't
been a lot of activity in this thread recently, I do hope that some more
people have successfully gotten their REF-0s up and running.
My goal all along has been to retrofit a modern GPS into the REF-0. Over
the past coup
Thanks for passing this along. That's quite a good price, assuming the shipping
is reasonable.
Is the 38dB of gain a little "hot" for some receivers?
Dan
> On Oct 1, 2015, at 3:19 PM, Gregory Beat wrote:
>
> I received this e-mail earlier today (below) from Launch3.
> Launch3 has been selling
I recently scored some old Austron 5MHz oscillators at a military surplus
store. They were listed at $10 each. (The price may have gone lower after I
BSed with the owner for a while) One is a Sulzer model 1120N from 1972. The
other is a Sulzer model 1150C from 1971. That 5 MHz oscillator has serial
All,
I hope some more of you have had luck getting your REF-0s running
standalone.
My earlier write-ups were focused on the bare minimum connections and code
needed to make a REF-0 work. Of course, external connections are not ideal
for long-term operations. The real end-state here is to have a n
All,
I have posted some example code for running the REF-0 standalone. There is
an Arduino sketch and some AVR C code. (Just in time for the weekend)
http://syncchannel.blogspot.com/2015/08/example-code-for-ks-24361-ref-0.html
I also did a quick write up recently about how I added the 10MHz test
All,
I poked around inside the KS-24361 REF-1 today to see how easy it would be
to replace/upgrade the Oncore GPS. I wasn't too successful, but I decided
to write up my findings anyway. Perhaps the information will be useful to
someone else as a starting point.
BLUF: It's not nearly as easy as ha
All,
I have completed a write-up on how to make the REF-0 run standalone. As
there is a lot to cover, I decided to split it up into two (or more) parts.
This first part summarizes what is required on the interface pins, and
details what I have discovered about the serial string timing. If you know
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