Hi John,
Since TOPCON is a manufacturer of topographic instruments, I think that
this antenna is used for this kind of work. GPS antennas made for
geodesy or surveying usually have a very good quality and their prices
are according to it.
But given the label at the bottom it could be used
(Hz): 354,5
Rs (Ohm): 24,3
Lm (mH): 22,13353409
Cm (pF): 0,01789803
Q: 45763
Regards,
Ignacio EB4APL
El 01/03/2021 a las 0:35, Dan Kemppainen escribió:
Hi All,
I've picked up a couple of old crystals. Mostly because they look
neat. They are 1Mhz
to obtain the motional resistance, inductance and capacitance, and the
crystal Q. Even some low cost hobby type analyzers have a mode for
measuring crystals with these calculations integrated.
Regards,
Ignacio EB4APL
El 01/03/2021 a las 0:35, Dan Kemppainen escribió:
Hi All,
I've picked up
Hi Jim,
This explains a lot of things. As an old time user of the Moon Bounce
time synchronization in the Madrid Space Complex, I can say that the
system was never popular among the users, it was cumbersome to use and
there were already other systems with better accuracy and availability,
The H maser that we had at NASA-DSN in the 80´s had a small H2 bottle
which supplied it to the palladium valve, so it could be refilled. We
never needed a refill but once we had to open the plumbing, it was
necessary to reestablish the vacuum before opening the H2 valve. it was
done using a
Hi,
I have a NTGS50AA, is this the model of your unit? If yes, I am very
interested in the circuit diagrams since I have a very partial one,
which I made by reverse engineering to bring the 1 PPS out, re-purposing
the 9.8304 output circuitry since I don't have any use for it.
Regards,
I received the same invitation. And they states that the WNRO problem is
an "external" problem. I did it and now all the maps are signaled as
invalid!
Fortunately I was able to copy my main map from a backup copy.
Regards,
Ignacio EB4APL
El 04/04/2019 a las 12:29, Mike Cook esc
Hi,
It seems that Didier has changed his website somewhat and the links
don't point to the referred documents. Either I was not able to find
them navigating within the site.
Regards,
Ignacio, EB4APL
El 17/03/2019 a las 4:57, Charles Steinmetz escribió:
Dave M wrote:
Excellent advice
of the the
straight ways, i.e. pin 1 to pin 1 and so on, the lights worked in a
strange way. Using the other way, the auxiliary board in front of the
main one and the cable straight between them, it worked ok. I can send
you a picture if you interested.
Regards & 73,
Ignacio EB4APL
El 20/06/2018 a las 1
