I took delivery of a Symmetricom 5817A with the 05Q DC power option. The 8
port seems to be going a little less than the 4 ports... not sure on the
reasoning there... however I picked it up on the usual auction site for
~125.00 shipped. I thought that was reasonable assuming it works.
Anyway, I'
On Thu, 7 May 2015 12:18:39 -0400
wrote:
> Note in the last digest indicated
If you are using digest mode, please disable it in the user settings
at https://www.febo.com/cgi-bin/mailman/options/time-nuts
It only makes sense if you never intend to reply to any mail and
messes up things when you
We have just acquired a used Datum SSU-2000 with a 2E (Rubidium) clock
and a 3E (TCXO )clock, as well as a PRS-45A Cesium clock driving a DS1
input card. The system works fine, once I got -48VDC power run to it;
the DS1 input locks to the cesium, and the rubidium and ovenized quartz
locks to i
Hi folks. I am divesting myself of one of my GPS receivers, an old Datum 9390
which works quite well (for my purposes anyway). I am bringing it to Dayton
and want to also provide a new owner with an antenna so they can be up and
running straight away. I have two antennas and I was wondering whi
Bob Marshall kirjoitti:
We have TymServe 2100 units and need the IRIG-B signal. They are
> disconnected from GPS and running in free mode. I’ve set the time
> via telnet but can only do that within about 250 milliseconds of
> the correct time. I see the engineering command “root engineering
Hi
I guess the simple answer is “when you measure them that’s the result”.
The slightly more complex answer is “fast silicon CMOS is indeed good, other
types may require further analysis”. In general the faster stuff is better
than
the slower CMOS.
Deeper into it you get to the fact that th
Hi
The “put the antenna up and rotate it to see what happens” experiment has
indeed been done. The
objective was not correcting the antenna’s issues, but validating that their
model of the antenna’s phase
center was correct. They were trying to see if anechoic chamber data really
gave correct a
We have TymServe 2100 units and need the IRIG-B signal. They are disconnected
from GPS and running in free mode. I’ve set the time via telnet
but can only do that within about 250 milliseconds of the correct time. I see
the engineering command “root engineering timing offset_time” but when I
Note in the last digest indicated that some of the patents run out in 4 years.
Looks to me that some plastic stamped choke ring with suitable metallic coating
should be cheap in bulk. Finding the phase center might be interesting,
but...
N0UU
___
In message <554bc3c3.7090...@earthlink.net>, Jim Lux writes:
>>> I wonder if anybody ever made a rotating GPS antenna to average out the
>>> X-Y phase-center offset ?
>>
>> There is a severe mechanical problem with that. Moving contacts
>> are very hard to keep electrically stable
You wo
In message <554b6547.5070...@burnicki.net>, Martin Burnicki writes:
>Poul-Henning Kamp wrote:
>> Ask them how/why the HBG transmitter screwed up the 2006 leapsecond ?
>
>If I remember correctly then the transmitter would have needed to be
>overhauled, which would have been very expensive.
On Wed, 06 May 2015 18:09:03 -0700
"Richard (Rick) Karlquist" wrote:
> > A standard input on a frequency counter is not a very demanding thing in
> > the hierarchy of
> > TimeNut signals. You can drive any of them with some pretty simple logic
> > gate based
> > circuits. No need to spend a lot
12 matches
Mail list logo
