Reach Antenna & Ground Plane Choice

I compared two antennas:
TW4721 (10 cm ground plane, plastic cover) vs Magellan NAP100 (which was not designed for GLONASS , but still recieves it)

While the TW4721 gets on average more Sats > 45 SNR.
The Magellan gets sometimes > 50 and generally more Satellites.
The single solution from the TW4721 spreads much more (sd one meter higher).
So I think the Magellan maybe filters better?
Unfortunatly I cant comapre RTK solutions easily…

Here SNR graphs ( TW4721 left, Magellan right):

And Sat vis

2 Likes