[time-nuts] basic question on GPS satellites

paul swed paulswedb at gmail.com
Mon May 16 21:00:50 UTC 2011


Lots of good answers
I do not select a mask
Most of my rcvrs will guess are 10 degrees mask. But that just happens to be
were they come in at.
My antenna is at 45 foot on a 95 foot tower on the south side. There are 70
foot trees around me. I use 1/2" catv hard line very low loss and free. Hit
a 4 way 2.5 Ghz splitter feeding 4 rcvrs.
Designing a 8 way splitter with amplifier over the next few weeks using a 31
to 1 2.1 GHz combiner works well at 1.5 Ghz. Cut out 3 1 X 8 sections for
now. Total gain after splits will + 6db. port to port isolation will be
about 20 db.
Will see how it all plays out.
Regards
Paul
WB8TSL

On Mon, May 16, 2011 at 11:13 AM, Chris Albertson <albertson.chris at gmail.com
> wrote:

> Another way to go is to move the GPS receiver so that it is close to
> the antenna, then use a long RS232 serial cable.  Or if the distance
> is more than 100 feet uses a balanced type of serieal.  You can use
> Cat-5 cable for this and there ar enough pairs in cat-5 so that you
> can send DC power on the same cable.   This is cheap than a log coax
> cable and there is even less cable loss.
>
> On Sun, May 15, 2011 at 8:39 PM, WB6BNQ <wb6bnq at cox.net> wrote:
> > Paul,
> >
> > If you had read more carefully what I wrote you would see that I said
> better coax
> > "WHEN HE PUTS IT OUTSIDE."
>
> --
> =====
> Chris Albertson
> Redondo Beach, California
>
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