Re: ✘UBX-MON-SPAN and antennas

[Gary E. Miller]

Yo All!

I misidentifed a 2nd GPS+GLONASS antenna as an ANN-MB0.  It is another
generic cheap antenna.  I have renamed that to gpslo2, and added the
real ANN-MB0 to the two revide plots.

revised-L1.png

The ANN-MB passband is the flatest, with a little peak at the GPS
center.  Slightly higher gain than the others, but also the highest
signal level outside the pass band.  So maybe just a slight stronger
LNA.

revised-L2.png

They are all pretty similar in L2, except the ANN-MB0 seems to have
outliers above the general curve.

Summary, the ANN-MB0 does look to be the best antenna, but not by a
huge margin.

Someday I should run longer tests with gpsprof too see if there the
difference in SNR and used satellites.  This only measured "power",
not SNR, hoizon, etc.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        gem@rellim.com  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

revised-L2.png
Description: PNG image

revised-L1.png
Description: PNG image

pgpWyTQik8EIq.pgp
Description: OpenPGP digital signature