Hello everyone, this is the first time I actually make a modest n00b
contribution to time-nuts, so please be kind with me I will appreciate
any comments, criticism and suggestions.
Aside from GPSDO and Rubidium Oscillators, I am also quite interested in
radio clock receivers. So I found the
As far as I'm aware, the Thunderbolt E models are the only one ones
with firmware new enough to handle the WNRO. Even the single-oven
OXCO version of the E is EOL, but it at least is new enough.
I'm also pretty sure the Es have BNC connectors, at least both of mine do.
-Dustin
On Fri, Nov 15,
Hi
None of the GPSDO’s commonly available on eBay have firmware updates available
for them.
They also pretty much all do not have schematics or service manuals. It is rare
to find a model
that has an operating manual.
Bob
> On Nov 15, 2019, at 3:20 PM, Taka Kamiya via time-nuts
> wrote:
>
Thank you.
The BNC port one may be a custom job. I know they OEM'd for few companies.
Since I have so many GPSDOs, I want one "master" unit. So I started looking
what appear to be the most commonly used type.
By the way did you ever get to tame the severe jitter of Symmetricon
version
You mentioned "this particular model," referring to the RED version, is no
longer manufactured or supported. (no firmware support) But does that mean
ones OLDER than that is still supported for firmware upgrades? Where do I go
on Trimble's website? There was nothing on firmware under
Long ago, I nabbed a demo copy of the Mac HP GPS Control software by Dave
Anderson GM6JJJ. Recently I tried to register my copy only to find he was
an SK and the registration part of his site is no longer in place.
Even though I suspect development has stopped, I'd be interested in getting
a
Taka -
The majority of the surplus GPSDO units come from the mobile/cellular
telecommunication companies since the late 1990s. Surplus equipment occurs due
to Service advances (2G—>3G—>4G/LTE—>5G), Technology upgrades/obsolescence, and
Consolidation/merger of telecom companies.
==
NO
Jim the potting is a pain. But if you decide to dig in, carefully
pick/clean out small bits at a time.
In my experience little bits come off and you can start to see if you are
getting into trouble.
If its anything like Tektronix HV supplies they are very repairable after
dealing with the potting.
At the end of October, after the DST change, a colleague had noticed an
error on his DCF77 decoder program, and wondered if there had been a
transmission error - it is always hard to believe your own code is at fault
:-) Pieter-Tjerk de Boer kindly replied with an extract of his log-file
showing
Does anyone have a spare HV PS board (just the small board with the xformer and
the two diode ladders in silicone potting) for an FTS 4060? My +3kv circuit
seems to have died and the board is not easy to repair due to the potting.
BTW, I did find that the board is not as hard to remove as it
Basically there is only one Thunderbolt. There are 2 firmware versions (2.2
& 3.0) and some of the earlier firmware version had a Piezo branded
oscillator rather than the Trimble branded one and the Trimble one is
somewhat better. The thick Thunderbolt package has a switching power supply
mounted
At a hamfest a few of weeks ago I got a TrueTime XL-DC, with antenna and
feedline for $45. :-) With the antenna setup in my living room it works
great, in good weather. It's the 1U version, with only the center LCD
display. The IRIG-B output works. I found a manual at
Dan thats a really good observation and I agree with your comment. No
matter we both agree shaking, wiggling and hoping are not going to work.
Regards
Paul
On Thu, Nov 14, 2019 at 8:24 PM Dan Kemppainen
wrote:
> Paul,
>
> To me it appears that "A" frame supporting half of the wire is a spring.
Hi
“Thunderbolt” is the name Trimble uses for their line of GPSDO’s. They have
used it for
almost 30 years. They have had at least a dozen different models within their
line of GPSDO’s.
Back about ten to fifteen years ago, a 911 location system started to be
scrapped out. It was being
It looks to me like one might be able to exploit a resonance of the
A-frame. Instead of
whacking it with a mallet, vibrate the tube in the appropriate direction at
the appropriate
frequency and run up the amplitude until (hopefully) the ribbon ends touch
on each
cycle as indicated by electrical
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