I changed cables, get new NRF24L01+ PA/LNA and make clean install of rasbian. Nothing helped, but then out of nothing it started to work (at least no fail). Its a mystery to me why. Thank you all for help.
pi@raspberrypi:~/MySensors $ sudo ./bin/mysgw
Jan 12 10:05:42 INFO Starting gateway...
Jan 12 10:05:42 INFO Protocol version - 2.3.1
Jan 12 10:05:42 DEBUG Serial port /dev/ttyUSB020 (115200 baud) created
Jan 12 10:05:42 DEBUG MCO:BGN:INIT GW,CP=RNNGL-Q-,REL=255,VER=2.3.1
Jan 12 10:05:42 DEBUG TSF:LRT:OK
Jan 12 10:05:42 DEBUG TSM:INIT
Jan 12 10:05:42 DEBUG TSF:WUR:MS=0
Jan 12 10:05:42 DEBUG !TSM:INIT:TSP FAIL
Jan 12 10:05:42 DEBUG TSM:FAIL:CNT=1
Jan 12 10:05:42 DEBUG TSM:FAIL:DIS
Jan 12 10:05:42 DEBUG TSF:TDI:TSL
Jan 12 10:05:52 DEBUG TSM:FAIL:RE-INIT
Jan 12 10:05:52 DEBUG TSM:INIT
Jan 12 10:05:52 DEBUG !TSM:INIT:TSP FAIL
Jan 12 10:05:52 DEBUG TSM:FAIL:CNT=2
Jan 12 10:05:52 DEBUG TSM:FAIL:DIS
Jan 12 10:05:52 DEBUG TSF:TDI:TSL
^CJan 12 10:05:53 NOTICE Received SIGINT
pi@raspberrypi:~/MySensors $ sudo ./bin/mysgw
Jan 12 10:14:30 INFO Starting gateway...
Jan 12 10:14:30 INFO Protocol version - 2.3.1
Jan 12 10:14:30 DEBUG Serial port /dev/ttyUSB020 (115200 baud) created
Jan 12 10:14:30 DEBUG MCO:BGN:INIT GW,CP=RNNGL-Q-,REL=255,VER=2.3.1
Jan 12 10:14:30 DEBUG TSF:LRT:OK
Jan 12 10:14:30 DEBUG TSM:INIT
Jan 12 10:14:30 DEBUG TSF:WUR:MS=0
Jan 12 10:14:30 DEBUG TSM:INIT:TSP OK
Jan 12 10:14:30 DEBUG TSM:INIT:GW MODE
Jan 12 10:14:30 DEBUG TSM:READY:ID=0,PAR=0,DIS=0
Jan 12 10:14:30 DEBUG MCO:REG:NOT NEEDED
Jan 12 10:14:30 DEBUG MCO:BGN:STP
Jan 12 10:14:30 DEBUG MCO:BGN:INIT OK,TSP=1
Jan 12 10:14:30 DEBUG TSM:READY:NWD REQ
Jan 12 10:14:30 DEBUG TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=20,pt=0,l=0,sg=0,ft=0,st=OK:```
