"@Hugues, thank you, it is good to know that its best to mount the ceramic patch antenna onto the ground plane itself.
The repeated result with the 20×20cm 0,6mm copper plate is: 37 out of 216 patches are on average above 45 dB (C/N0):
"I was wondering what the improvement in signal strength (C/N0) would be when adding a (copper) ground plane to a Chinese GY-NEO6MV2 with a GPS-001 active GPS antenna.
For the test setup I ordered 19x19cm 0,6mm copper plate from Aduis. A standard…"
"@Torsten On May 12, 2015 you wrote:
What was strange was that with the DroTek the signal strength of some satellites suddenly dropped for some ms. I am not sure what happened. Maybe a problem with the FTDI cable.