I finally got it working at 4800bps from -2 to 5 floor (reinforced concrete building), but the link isn't stable. I had auto reset or power issue earlier(I use 3.3v ftdi friend). When I start serial monitor my moteino always resets, led blinks few times and I get normal serial output but nothing is received. Transmitter sketch works ok. When I power receiver from battery everything works as expected.
I followed Felix suggestions and commented out Bitrate, FDEV, RXBW, RSSITRESH, RXRESTARTDELAY and It works at 4800bps.
I tried 1200bps and set:
BITRATEMSB_1200
BITRATELSB_1200
FDEVMSB_2000
FDEVLSB_2000
left rest commented out, but it doesn’t work, I don’t know how to set RXBW and RXRESTATDELAY.
How to enable low noise pre-amp?