[time-nuts] Low SNR GPS reception and cheap LNAs
attila at kinali.ch
Sat Apr 26 10:52:04 UTC 2014
On Sat, 26 Apr 2014 12:25:11 +0200
Magnus Danielson <magnus at rubidium.dyndns.org> wrote:
> If you have a passive antenna, put a LNA right at the antenna, since any
> cable damping will cause the S/N to go down. Also, if you put an
> aditional amplifier in line, your want that too up at the antenna.
> Then, low-loss cable should be natural.
My current antenna is an cheap patch antenna. It has an LNA, but aparently
it's not enough. I talked with a few gnuradio people and they basically
told me that the GNSS-SDR software needs a strong signal for acquisition.
Ie. i realy need to put the antenna somewhere with good skyview.
I ordered 4 of those lna4all, so that problem should be solved.
I'm also getting a better antenna and we'll see how much signal i can
get out of this place.
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