Of course the elevation mask is only software and doesn't prevent the bad
signal from entering the antenna but then the signal will not despread and
should cause no harm to the computations.

On Tue, Apr 3, 2012 at 9:19 PM, <shali...@gmail.com> wrote:

> The elevation angle filter is based on the satellite position, not the
> actual direction the signals come from.
>
> If you have reflections and multipath, but the satellite is otherwise high
> in the sky, you are out of luck regardless of elevation angle filter.
>
> Of course, the higher the sat, the less likely you will have reflections
> from roofs and such, so it is definitely not useless, but it is not the
> same as having a good antenna in the first place.
>
> Didier KO4BB
>
> ------Original Message------
> From: Hal Murray
> Sender: time-nuts-boun...@febo.com
> To: Time-Nuts
> ReplyTo: Time-Nuts
> Subject: Re: [time-nuts] Antenna for t-bolt
> Sent: Apr 3, 2012 12:15 AM
>
>
> c...@omen.com said:
> > Presumably a timing antenna would block low elevation signals to reduce
> > multipath.
>
> Maybe, but there is a software aspect to the filter.  You get to select the
> elevation angle.
>
> I don't remember seeing any specs about the filtering angles of various
> antennas.  Has anybody seen something like that?
>
>
> --
> These are my opinions, not necessarily my employer's.  I hate spam.
>
>
>
>
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> Sent from my BlackBerry Wireless thingy while I do other things...
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