https://www.digikey.com/product-detail/en/on-semiconductor/MC74VHC1G86DTT1G/MC74VHC1G86DTT1GOSCT-ND/2705092
https://www.digikey.com/product-detail/en/nxp-semiconductors/74HC74D,653/568-1490-1-ND/763395
> On Jul 6, 2016, at 8:39 PM, Charles Steinmetz wrote:
>
> Nick wrote:
>
>> I got the boards
Hoi zäme!
I will be at a conference in Pittsburgh next week and will be staying
there for ~10 days. Are there any time-nuts in the area who'd care
for a drink?
Attila Kinali
--
Malek's Law:
Any simple idea will be worded in the most complicated way.
_
Did anyone come up with a manual for the Austron 6014? I am also in need of
one. Thanks.
Mark, W7FTZ
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To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instruct
Hmm. When I was there yesterday I didn't see any "No Photography" signs,
so I photographed lots of the exhibits, including the four Harrisons . I
used flash, so I wasn't the least bit stealthy, and one of the staff was
only a few feet away. Maybe they no longer care?
Dave
On Wednesday, 6 July 2
Dave,
The rules have changed regarding photography for all National Trust
properties so click away.
Regards
Peter
On 07/07/2016 21:41, Dave Martindale wrote:
Hmm. When I was there yesterday I didn't see any "No Photography" signs,
so I photographed lots of the exhibits, including the four
Nick wrote:
>> Charles wrote:
>>
>> What specific chips did you use?
>
> Nick wrote:
>
> MC74VHC1G86
> 74HC74D
Good to know, thanks. Just FYI, you may want to look into the NC7SZ86
(and other NC7SZ "TinyLogic" series parts). The NC7SZ86 is
pin-compatible with the 74VHC1G part, with several a
I hope this isn't too far off topic, as this is having a big impact on my
testing.
I decided to run an A/B test on one of my GPSDOs: comparing the phase of the
two 10MHz output channels. In the middle of the night, there was a long series
of 35ns pops in the phase data. Strangely enough, ther
I recommend rigging up something to operate from storage batteries for the
rest, thus eliminating the power line temporarily.
Jeremy
N6WFO
On Thursday, July 7, 2016, Bob Stewart wrote:
> I hope this isn't too far off topic, as this is having a big impact on my
> testing.
>
> I decided to run a
1/35ns is about 30MHz. Is there anything in your clock chains that is
ticking at 30MHz, such that a false count or slipped count induced by
inductive disruption, would cause a 35ns phase jump?
Related thread:
https://www.febo.com/pipermail/time-nuts/2016-May/098028.html
Tim N3QE
On Thu, Jul 7, 2
So, since I need to power the 5370 (preferably both) I'm looking at a deep
cycle battery, a charger, and an inverter? At this point in the process, a
power line monitor is looking like a good solution. At least it would tell me
to ignore the test results.
Bob
---
Hi Tim,
I don't see how it could be related to a clock chain in my unit. I'm quite
literally running the two outputs from one unit through about a meter of coax
each to the 5370. These two outputs are from a single 74HCT365. Pins 12 and
14 of the chip (the inputs) are tied together, and pins
Tim,
There is one variable that I neglected to mention in the first response. I've
been unhappy with the stability of the 10811s in both 5370s. So, for this
test, I'm using the 10MHz output from another one of my units to supply the
clock. In the past 71,000 seconds of the retest, I'm seeing
Hi
As has been mentioned a few times before …. the best approach is to run
batteries to supply the
gear in question off of DC power. Running everything off of it’s own battery
may not be practical if
you have gear that is looking for 12V, 15V, 18V, 24V, 28V, 48V and -12V. The
practical answer i
b...@evoria.net said:
> So, what to do? I've been looking at UPS devices, and I don't even
> understand enough to waste my money on a bad one.
A UPS has 2 major properties. One is the amount of power it can put out.
The other is the battery size which translates into how long it will last.
T
I've found that the HP-5065A rubidium makes for a pretty decent power line
monitor. Mine will trip the "continuous operation" indicator on power glitches
that most power line monitors ignore (including some rather high dollar ones).
___
Hi
Have you been through the full alignment process on one or both of the 5370’s ?
They are as much
an analog beast as they are digital. They *do* drift out of calibration /
alignment / adjustment. When
they go it’s usually not all of a sudden. They just gradually get worse and
worse as the ad
Hi Bob,
They're spikes. So, what I'll do is just keep a test like this running for the
next few days as I do other things. I'll go ahead and put it back on internal
clock, just in case. If I see nothing, I'm going to have to conclude it's the
power line. If bad weather comes back and they ha
b...@evoria.net said:
> So, since I need to power the 5370 (preferably both) I'm looking at a deep
> cycle battery, a charger, and an inverter? At this point in the process, a
> power line monitor is looking like a good solution. At least it would tell
> me to ignore the test results.
Yes, you
You'd be better off running the GPSDO off a LiFePO battery and float
charge the battery with an appropriately constructed linear PS...
ALL but the most expensive UPSs use switch-mode power supplies... to
power the load when on mains.
__
Clay Autery, KY5G
MONTAC Enterprises
(31
Nothing looks good at the moment. It may be that I just have to trust the
equipment testing and if there's a big blip that's not repeatable, then it
didn't happen. No, I don't like it either.
Bob
---
GFS GPSDO lis
I have this set up in my radio room with ham radio equipment and my
thunderbolt. I got the same size battery as is in my truck so if that fails,
I have a drop-in replacement.
There is a company in the USA that manufactures a product called
BatteryTender - excellent float charger and maintainer. Co
In message <20160708041855.562d7406...@ip-64-139-1-69.sjc.megapath.net>, Hal Mu
rray writes:
>b...@evoria.net said:
>> So, since I need to power the 5370 (preferably both)
I've been staring at the 5370 PSU many times, it is a horribly inefficient
design.
The 5V rails are regulated down
Hi Clay,
Powering the GPSDOs isn't a problem. They run on 12V and draw less than an
amp. The problem is that 5370 is a big hulking power sink and it appears that
when it's hit with a spike it lets its displeasure be known in the data.
Bob
---
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