Hello Mike, Happy 4th !
How about:
Put the GPS receiver and antenna up high. Add photovoltaic panels, a
charge controller, and batteries for all of the DC power needed.
Add a RS-232 serial to fiber optic converter then a few hundred feet of
fiber optic for the galvanic isolation.
At the shack end have a fiber to RS-232 converter then the PC and Lady
Heather.
If you are only after the 1PPS timing pulse, that is a different story I
have not addressed.
Maybe the 1 PPS can be extracted from the serial port.
Possibly convert the RS-232 serial to USB, then a fiber converter and a
similar full duplex converter at the shack end.
Another alternative may be a RS-232 serial to WiFi converter and a
similar unit in the shack. Full galvanic isolation with radiated RF.
Transition Networks may offer RS-232 to fiber converters. They may also
be found on Ebay, as will the fiber cables.
Possibly do a product search at NewEgg.com. for other choices of converters.
Stan, W1LE Cape Cod FN41sr
On 7/4/2010 11:31 AM, Michael Baker wrote:
Time-Nutters--
The 5-year Flash Density Map of the USA provided by
the National Weather Service indicates that my county
here in N. Central Florida experiences "16 and up"
strikes/sq-km/year.
< http://www.weather.gov/os/lightning/images/map.pdf >
Experience bears this out...
I live on 6 heavily wooded acres and have had at least
6 trees struck and killed somewhere on my property
over the last several years.
I make it a faithful practice to disconnect antennas
from any gear during the frequent thunderstorms we
experience.
I have considered fastening a GPS antenna on the end of
a 12 foot fiberglass pole and installing it in the top
of one of the trees next to my workshop building so that
it has a clear 360 deg sky view down to within a few
degrees of the horizon.
It would be nice to come up with some way to use fiber
optics to isolate the GPS antenna from the receiver.
Coming up with a solar panel and battery to isolate the
antenna and RF preamp power is no big deal but coming up
with a way to isolate the RF via fiber is more problematic.
Any thoughts/comments on this...?
Thanks!!
Mike Baker
Micanopy, FL
-----------------------------
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
