Electronics | Amateur radio | Nerdy Stuff
This Trimble Thunderbolt 10 MHz GPSDO (purchased off eBay) has always reported temperature incorrectly.
Everything else was fine, just the temperature being reported as -55°.
The temperature sensor is a Dallas DS1620S in a SOIC-8 package, and is quite easy to replace, as seen in the following video.
This v2.3 firmware fix addresses the date translation error which became apparent on January 1, 2020.
Due to unforeseen coding bugs in the WNRO (Week Number Roll Over) fix released in 2017, 01-Jan-20 was incorrectly displayed as 32-Dec-19. The day after the 31st.
02-Jan-20 was displayed as 33-Dec-19, and so on.
In addition to fixing this bug, leap year … Read more...
PICAXE .bas files have now been added to the main article.
Full details on how to upgrade your VK4GHZ Thunderbolt Display, and ThunderBolt Commander can be found at:
http://vk4ghz.com/thunderbolt-gpsdo-display-firmware-fix/… Read more...
I have a fix for the Thunderbolt GPSDO date error!
The VK4GHZ Thunderbolt Display no longer uses the Year, Month and Day data fields sent from the Thunderbolt.
These date fields are no longer translated correctly inside the Thunderbolt since it rolled over from July 29 to 00:00:00 July 30, 2017.
This is often incorrectly reported as a 10-bit week … Read more...
A Trimble ThunderBolt GPS Disciplined Oscillator (GPSDO) is the main 10 MHz station reference, and was originally built into a dual-band 2.4/3.4 GHz transverter system.
Now that a larger and more powerful 3.4 GHz PA module is to be installed in this system, the ThunderBolt must be re-located out into it’s own box.
Whilst the ThunderBolt was internal, removing the … Read more...
All ThunderBolt Displays have now been sold.
That makes a total of 130 units out there, assembled in 3 production batches (Dec 2011, Nov 2012 and Sep 2013).
At right is a chart of where they ended up.
(Click on chart, to see full-size)
This is a discontinued item.
There are absolutely no plans to build anymore.… Read more...
Post by N1JR » 08 Jun 2012, 21:03
I sometimes use “Lady Heather” monitor software on my computer for my Thunderbolt.
I have noticed that when I do, after a while, Adam’s Thunderbolt Monitor stops reading the correct outputs, i.e. no ppb, no location, etc. In order to restore Adam’s Monitor, I need to un-power the Thunderbolt and then re-power … Read more...
ThunderBolt Display documentation has been updated to reflect the subtle changes of the V3 PCB.
Please note:
As of this afternoon, 25 of the batch of 50 units have already been paid for, 10 of which have now been posted overseas from orders received last week.
More being posted tomorrow.
The last 25 remain uncommitted.
First in, best dressed – it’s that simple! 😀
Jumbo green LCDs are more popular than I originally anticipated, and I will … Read more...
A new video takes a look at what the ThunderBolt Display displays!
… Read more...
Expressions of interest in obtaining a ThunderBolt Display will be closing soon.
This third production run will be the last.
Please contact me, if you would like to obtain a ThunderBolt Display, and indicate what type of LCD option you would like.
Order forms will be sent to those who have indicated an interest in obtaining a ThunderBolt Display … Read more...
Here’s a rundown of my Trimble Thunderbolt GPSDO project.
It provides an accurate 10MHz reference for the transverter Local Oscillator PLLs.
The existing Thunderbolt mounting holes will be utilized, and mounted in a vertical orientation, inside the 3RU 2.4/3.4GHz transverter enclosure.
Above: Under the hood! A DEMI 4-way Splitter/Amp/Filter, and a Futurlec DC-DC converter board inside
The Futurlec dual DC … Read more...
Unit #1 – Within Transverter enclosure, no screws visible from front panel
This is the part I have been dreading… actually mounting the display, and preferable in a strong manner that is invisible from the front.
To be really strong and survive MAD (Microwave Activity Day) use tends to rule glue out.
To be invisible means no screws through the … Read more...
ThunderBolt Display What does the ThunderBolt Commander do? ThunderBolt Commander can send four pre-defined command packets to a Trimble ThunderBolt Disciplined Clock. Primarily, it is used to change the ThunderBolt’s receiver mode between OverDet Clock and Full Position 3D. Watch the video Easy to build on Veroboard Do I need this? If you always operate a Trimble ThunderBolt … Read more...
Take a look at the VK4GHZ ThunderBolt Display, and see what it does.
ThunderBolt Commander
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