For anyone who might be interested...Today's mailshot from Elektor magazine
features a low component count MSF receiver and display based on the Raspberry
Pi Pico board, and an even lower component count if a suitable antenna is
already available
I was aware of the Tonga erruption, although not generally into seismology, but
wonder if this might
be of interest.
https://www.qsl.net/rf-seismograph/
A project to add computer demodulation to a variety of commercial
receivers/transceivers eventually morphed
into an ongoing
For those interested in the historical aspects, mid 50s in this instance, of
crystals and crystal oscillators in radio equipment...
https://worldradiohistory.com/BOOKSHELF-ARH/Tube-Technology/Handbook-of-Piezoelectric-Crystals-John-P-Buchanan-1956-(701-pages).pdf
Even a few of them there 3 legged
> https://www.mediafire.com/file/7w7moa6rd7kmk9r/OncoreVP_Z3801A.zip/file
Thanks for that set of data. There used to be a wealth of datasheets for
both boards and chips, but that went away. Here is at least some of that
data, which I appreciate.
If people have more of that, it would be nice if
The receiver fitted to the Z3801A is/was a Motorola 6 channel Oncore VP.
It should be possible to replace this with a later 8 channel Oncore VP set to
run in 6 Channel mode but a copy of Syntac or Tac32 will be needed to change
the configuration.It's also possible that an 8 channel Oncore VP
command, that might also be why treating it as a command does not result
in an error.
The GSS4200 manual you posted is a bit younger than the first one I got, but
materially they're pretty much identical.
--Andrew
Andrew E. Kalman, Ph.D.
On Sat, Apr 24, 2021 at 2:13 AM Nige
Spirent have indeed done a very good job of removing just about everything from
the public domain.Having spent many hours a few years ago trying to find a copy
of SimChan for the GSS4100 I also had to give up, despite finding references
not that much older which indicated it had previously been
These are the files I downloaded several years ago, what looks to be the
windows executable is inside a secondary zip file, publish.zip.
I don't recall trying to use any of this as I always calibrated 5680As using
the manual method.
I've now uploaded the file to mediafire...
Thanks all for the feedback and information, it's been very helpful and much
appreciated.
I've been back tracking through a long accumulation of "rainy day"
projects, and this is obviously one of those that's been neglected for far too
long.
Something else that's fast becoming obvious
Thanks for the update, I'm getting a better picture now of what happened and it
doesn't sound quite as bad
as I'd thought, certainly makes them worth playing with anyway:-)
Nigel GM8PZR
On 1/11/21 5:36 PM, Nigel gm8pzr via time-nuts wrote:
> A few years ago SA45s CSAC modules were
A few years ago SA45s CSAC modules were all the rage, and I was more than happy
to acquire a few
as fallout from a UK MOD project.
It wasn't too long after though that reports were suggesting earlier failures
than expected, but I can't for the life of me remember why.
Something underwater does
Noticed Bluegirls changing her listing based on Nigel's false information.
Hm Really?
Please help me understand what false information I'm supposed to have provided?
I've explained to the seller that the supply voltage should be quoted as a
nominal 3.3V, with a maximum of 3.6V,
Many thanks for the comments on this, I've since heard from the seller who
tells me they were listed as tested after being pulled from working kit and
haven't been tested since at 5 volts, phew:-)
I remember the missing diodes on fluke.l's version of the Tbolt monitor, and
also seem to remember
H
was kinda thinking that might be the case, perhaps time to hope they weren't
tested after all!
Late here, will check tomorrow
Nigel GM8PZR
Hi
The “normal chips” that should be inside the module all have something like a
3.6V max supply rating on them.
I would guess that 5V
Oh boy, I'd forgotten these even existed:-)
Somewhere, in a very remote corner of a dark and lonely shelf, I probably still
have lurking a Brainboxes PSI Box, described optimistically as a "flexible
three way interface converting between IEEE488, RS232 and Centronics Parallel".
Brainboxes was,
During the December conversation re LEA-M8T modules on scraps of PCB from Ebay
I commented that the same seller also had complete circuit boards available,
and suggested this might be a worthwhile alternative.
I've dealt with this seller before, always been very happy with the results,
and
Wow...
Thank you Corby and thank you Tom, and thanks also to all who contributed to
Corby's EEVblog pages.
I've played with similar ideas in the past but do now feel much more confident
of success.
Not sure if that just sounds like obsequious bullshit, or perhaps just an
admission of
Hi Mathias,
I'm assuming you're using a coin cell for back up, so wondering if one of the
diodes shouldn't be in series with the battery, with both cathodes to V_BCKP?
Nigel GM8PZR
I've updated the repository on github with the latest design files. The
breakout board is now final as far as I'm
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