I think the reason the PICDiv is so well regarded is because of the
specific chips used and the way the timers etc. are implemented in them.
So, an alternate chip outside of the Microchip PIC range just might not be
capable of the performance.
Are they in short supply?
On Sat, 30 Apr 2022 at
Hi, there's a link to information on the Time Nuts archive:
https://time-nuts.febo.narkive.com/Bhntgkdy/changing-fe-5650a-frequency
Schematics might not be included, FE seem to have kept those close to their
chests.
If the link to the ZIP file fails, archive.org might still have it.
On Thu, 3
Oh what a problem to have, how will you cope?
On Wed, 15 Dec 2021, 21:50 Jeff Kruth via time-nuts, <
time-nuts@lists.febo.com> wrote:
> Got delivery today of our new MHM2010 Maser after 1-1/2 years It was
> delivered hot, so after a little bit of setup, the VCO gave a green light
> and the
Oh, they've moved on a long way from that.
They often have mesh networked control now, using 868MHz or cell networks
in some cases.
On Fri, 12 Feb 2021 at 16:57, Adrian Godwin wrote:
> I wouldn't be surprised to find that streetlight clocks use the same old
> Sangamo or Venner
I'm not convinced they will be impressed by your scheme for ultra VLF
signalling Andy but it'd make a nice Radcom article
On Sun, 7 Feb 2021, 21:44 Andy Talbot, wrote:
> The UK has a standalone frequency locked grid supply, nominal 50Hz, which
> typically wanders +/- about 0.15Hz RMS over
Do they have a ground pad on the underneath of them which solders to the
board?
If not then I'd suggest methodically working your way round them with
solder wick, removing as much solder as you can before slipping the tip of
a fine blade under a corner to apply the slightest leverage, you then
There's a copy of Introduction to Quartz Crystal Unit Design by Virgil E
Bottom for sale on thriftbooks.com but it's available to "borrow" on
Archive.org and there are several copies of Theory and Design listed in
various US university libraries on worldcat.org perhaps a friendly faculty
member or
12F675 is specified for clock input of 20MHz and (without digging too deep
into the way the code works) I think the PICDiv code works with clock input
rather than input to a timer or counter peripheral so 20MHz would be fine.
While I'd not recommend it for use I have seen them run
I've just received my June Radcom which contained news of the passing of a
Walter Blanchard who was involved in the development of Decca Navigator and
Loran C, he also worked on a GPS forerunner navigation system called
"Transit".
There's an obit at www.rsgb.org/sk which may contain more detail
Well if anyone has the DC-DC converter from PRS50 that they've broken for
spares I'd be similarly very interested
On Tue, 21 Apr 2020, 22:22 Bob kb8tq, wrote:
> Hi
>
> I figured it wouldn’t hurt to ask.
>
> Who knows, maybe all this talk has somebody else sending the
> innards of one off to
I have seen 10.23 parts somewhere but can't remember the application.
If you can't track one down there's still a couple of reasonably priced
options for custom crystals, you can have them ground by a czech company,
www.krystaly.cz/en
On Wed, 26 Feb 2020, 09:26 Tom Van Baak via time-nuts, <
Actinic short wavelength UV light, the same stuff you use to erase EPROMs
or sterilise scissors, pond or aquarium water will do the job but, a little
perspective, there are 1.386 billion people in China and fewer than 21,000
confirmed cases of coronavirus, fewer than 500 deaths since the outbreak
FWIW, I've been using an Extron video distribution amp for almost three
years now, bought with the intention of modifying it to 50R but never got
round to it.
I've never been able to identify a practical reason to change it because
it works perfectly for my needs though I'm sure others will
I'd imagine the effort required to characterise a TCXO to that level and
add the monitoring hardware/software would put the cost in the region of an
OCXO but it's an interesting idea, I wonder what the variance across a
batch would be
On Thu, 1 Aug 2019, 08:01 Tom Van Baak, wrote:
> An email
His skill with the written language isn't great but his products are
beautiful and finished to a very high standard.
People buy them, they're more art pieces than time nut timekeepers.
On Wed, 22 May 2019, 18:01 Alberto di Bene, wrote:
> On 2019-05-22 2:03, Scott McGrath wrote:
> > Everbody
, Clint Jay wrote:
> I've just laid my hands on a Datum PRS-50 Cesium reference which 'released
> the magic smoke'.
> A common problem with these is the capacitors in the main PSU but these
> have already been replaced by the previous owner.
>
> Unfortunately when he powered it
I've just laid my hands on a Datum PRS-50 Cesium reference which 'released
the magic smoke'.
A common problem with these is the capacitors in the main PSU but these
have already been replaced by the previous owner.
Unfortunately when he powered it up there was smoke released.
I *think* I've
I’m a regular WSPR and FT8 user and use Dimension4 to sync my PC clock,
time.is says the clock is ‘exact’ with errors in the single digit mS range
reported.
My results on WSPR/FT8 would suggest it works well enough and there doesn’t
seem to be any advantage in this application to seeking further
I’ve experienced similar random freezing which turned out to be the
Prolific PL2303 USB to serial adapter, changing to a CH340 device fixed it.
Might be worth a look?
On Sat, 16 Jun 2018 at 14:11, Mod Mix wrote:
> Am 16.06.2018 um 14:00 schrieb ew via time-nuts:
> > My partner in crime Juerg
19 matches
Mail list logo
