Better reception with nrf LPA?
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it also amplifies received signals, which works very well. I cover my whole flat (100m²)with this version for the gateway (and only the gateway, rest ist normal nrf24l01 modules)
The non PA/LNA was not able to get into all corners of the flat.AFAIK PA stands for Power Amplifier (meant for TX) and LNA for Low Noise Amplifier ( meant for RX).