Temperature stability will vary with climate. Here in upstate NY, you’ll need
to get to >50” of depth to start to get any real year round thermal stability.
But a local civil engineer should know that number well. We also have to worry
about water intrusion, even with concrete, depending on
Hey folks,
I've listed them elsewhere, but I have an HP 5370B (with the beaglebone
upgrade) and a 5372A I'm thinning from the TE herd. PM me for more details
if you are interested.
Thanks,
Bob
___
time-nuts mailing list -- time-nuts@lists.febo.com --
Brian,
TICC is one answer, HP 5370 would be another. They can often be had quite
reasonably on ebay and, short of a SRI counter, seem to be the standard.
There is one on ebay atm (item 401738800574) for 120 obo that, while
missing the red filter on the front, probably just needs to have the
Localhost is yourself. Typically the IP address of 127.0.0.1
You could use LH to update the time on the machine she is running on.
Bob
> On Dec 30, 2019, at 21:52, Richard Mogford wrote:
>
> I have not been on this list since 2016 and have some new time questions.
>
> I am using a program
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
I have a few of the 2 in 5 out video distribution amps. I took one apart
and converted it to 50Ω from 75Ω, and to be honest, I can't really see a
difference.
Bob
On Fri, Oct 18, 2019 at 8:08 AM Charles Steinmetz
wrote:
> Taka Kamiya wrote:
>
> > I am using Extron MDA 3V for distributing 10MHz
Most of the good data centers I’ve used either offer a connection to a stratum
1 server or are more than happy to put a antenna on the roof. Many offer
microwave as a third redundant circuit path, which requires an antenna. All for
a price, of course.
When I worked for an ILEC, many moons
Sure, presuming the output is 50Ω, build a 50Ω power divider. The signal
will be 3dB down on each of the outgoing legs vs the input. Plenty of
designs if you google it.
If the output is TTL, feed a 74xx04 on pin 1, send pin 2 to 3 and 5, pick
up the output from 4 and 6. Or choose some other gate
To pull this back to time nuts territory, this brings up the idea of simply
using traditional ethernet infrastructure, be it 100M/1G/10G/whatever at
the PHY layer to achieve distribution of 1pps. The infrastructure is easily
enough interfaced to, even a simple microprocessor can do it, using
>
> Yes, those brown roughly 1" square caps used intact sheets of mica as
> dielectric. You can easily split the mineral into uniform, thin, transparent
> sheets.
Beware inclusions that will make the surface rough and change the behavior,
particularly breakdown voltages.
> The reconstituted
Mark,
I had pretty good luck with a Hittite prescaler built into a board for the
5328 as outlined by Bert, VE2ZAZ.
http://ve2zaz.net/hp5328a/hp5328a_prescaler.htm
It's a wee bit deaf as frequency goes up, but works just fine!
Bob
On Thu, Jan 24, 2019 at 1:00 AM Mark Spencer
wrote:
> Hi:
>
Interesting. I was wondering this as well now that time-nuts has gotten me
into collecting vintage (pre WWII) chronographs. Some are radium, some not,
most are in need of a good repaint either way.
But I do know that tritium gun sights are also a thing. Are those all
mil-surplus or using some
My t'bolt uses a classic magnetic GPS antenna stuck to the top of an old
5.25" disk drive cover laying on top of the screen in the bubble covered
skylight in my office. Works as well as the timing antenna 30' the tower. :)
On Fri, Jan 4, 2019 at 6:08 PM ew via time-nuts
wrote:
> Had in North
Add a tiny speaker so you can simulate the loud 'tick' of the analog clock.
;)
On Fri, Jan 4, 2019 at 4:29 PM ed breya wrote:
> Paul, what do you mean by the display "looking pretty ratty?" As I
> recall, the original buck regulator had regulated output voltage around
> 5V for the LEDs. and the
Video distribution amplifiers are a very good and inexpensive solution to
this problem. Think I paid $5US for my 24 port one (which is actually 3x
dual 1 in 4 out units). I converted one of them from 75 ohm to 50Ω and
didn't bother doing the rest as it made no discernible difference for
timing
Have you tried with just a single pulse?
> On Oct 28, 2018, at 20:49, Dr. David Kirkby
> wrote:
>
> I'm trying to do something which would seem conceptually easy, but I'm
> getting results I can't understand. I wish to measure the delay (in
> seconds) of a bit of length of coaxial cable.
>
A while back, there was a discussion on a part used in an older TIC (IIRC)
design that had changed pinout between 74xx and 74{LS,ALS,H,F,etc}xx and
the design used the older part. Does anyone remember what the part number
was? I found a largeish stash of 74xx parts last time I was scouring the
Mark,
That would be most useful and free folks from a few of the proprietary
satellite tracker programs. One could write a 'shim' to consume the output
from a tcp/udp (or serial) port and convert to the proper format for a
chosen polar or az/el rotor.
Bob
On Sat, Sep 1, 2018 at 2:00 PM Mark
I can heartily recommend the QRP-Labs wspr beacon kit with GPS. It pull the
time from an attached GPS module and will beacon on 2m and below. Once
assembled and configured with your callsign and the bands you want to xmit
on it Just Plain Works. It can even provide 1pps out.
Pick the right GPS
Power over Ethernet. 48V shipped down the ethernet wires. Generally used to
power IP telephones, but WiFi Access points and other technologies have
jumped on the bandwagon as well.
On Mon, Jun 18, 2018 at 12:25 PM, Mike Feher wrote:
> Hi all -
>
> Sorry for an ignorant question from an old
IRIG-B generator/displays candy had on eBay for very little money. There’s one
currently listed for about $10.
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F202337773272
Feeding one of these with the aforementioned NTP to IRIG – B is the easy
solution. And
Hal,
I remember there being such a thing, but a search of the ntp site turns up
nothing. Anything you can provide would be most welcome.
Thanks!
Bob
On Fri, Jun 15, 2018 at 12:20 AM, Hal Murray
wrote:
>
> bow...@gmail.com said:
> > I’m still hunting for something that will take NTP in and
22 matches
Mail list logo
