Problems with NMEA out to VHF radio in OP V2.

[Seacat]

Hello,

Pls advice what can be wrong with following or how to check data flow:
I am trying to send AIS data from Openplotter SDR AIS to Chartplotter Garmin GPSmap620,
have tried both ways Signal K to Nmea0183 and NMEA0183 to NMEA0183 plugins without success.

RPi4, Signal K 1.29., Openplotter SDR AIS 2.1.0 (Works well), Garmin is connected via usb-serial ch340 (USB to RS485)


nmea0183 to nmea0183 settings in Signal K was

SDR AIS: 
Input type NMEA0183
ID Openplotter SDR AIS
NMEA0183 Source UDP
port 8080
SentenceEvent nmea1data

Garmin at usb-serial
Input type NMEA0183
ID aisout
NMEA0183 Source Serial
Serial port /dev/ttyOP_aisout
baudrate 38400
OutputEvents aisout
SentenceEvent 'empty'

Plugin NMEA0183 - NMEA0813 
Active
Input event nmea1data
Output event aisout
NMEA0183 Sentences VDM, VDO (have tried to send also all available sentences)

Also have tried for Signal K to NMEA0183 to put in USB-Serial OutputEvents nmea0183 or nmea0183out or nmea1data, 
but with success. After any correction in settings Signal K was restarted.

After all Signal K dashboard still shows no Connection Activity for aisout.