The GPS simulator project gps-sdr-sim now supports ADALM-Pluto SDR for playing IQ data.
Today I tried my G7RGQ antenna together with a NooElec NESDR Smart stick connected to the ADSB Raspberry Pi. I put the antenna and the stick on the roof and had it running for a while. To my surprise the performance was not as expected. I needed the same a gain setting to archive results comparable to my QFH antenna with 6m coax to the receiver. Again, I removed 6m of coax, around 6dB attenuation, but results were ain´t better. Took everything down again and disassembled the setup for testing.