[time-nuts] "Better" gps antennas than a Symmetricom 58532A

[Chris Albertson]

On Mon, Jan 21, 2013 at 8:58 PM, <lists at lazygranch.com> wrote:

> It is possible that the noise figure of the preamp is better than that of
> the gps. This is especially true if the GPS predates SiGe parts being
> common place.
>
> I never ran any heliax, but isn't the idea also that it will last longer
> than coax.


The main reason for Heliax is the lower loss and longer runs.  But it might
also last longer becuase water can't wick down a solid shield like it can a
braided shield.  But aren't GPS antennas designed with the connector on
their bottom so you run the coax cable down the pipe.   Any coax inside a
waterproof metal pipe should last nearly forever.

My antenna is typical of most, I think,  The N type connector lives inside
the mounting flange so it never sees rain or sun.  But even if it did the
expected life of "normal" RG8 cable laying on a roof top is 20 to 25 years.





>
> --
>
> Chris Albertson
> Redondo Beach, California
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>



-- 

Chris Albertson
Redondo Beach, California