[werk_ag]

Also I turned the debug on and are getting lines likes this (copied from Serial monitor)..

Certainly, when you are doing tests with the receiver, we'll talk more about the meaning of data in these lines.

For now, I think it's important to say to everyone: Anyone who wants to build the system, do not have to worry about meaning of these data, however knowing what they are, also does not hurt ...
This data structure follows the EasyWeatherPlus format, commonly used in Fine Offset weather stations. It is used on the TX unit only for debug purposes.

Sending...
DataPacket ID1: 161,1,218,326,0
Temp: 2.18 Hum: 3.26

Taking the opportunity to add a little more information ...

What is really sent by the TX unit, is the content of several Datapacket's like the one above.
Each ID corresponds to a type of sensor or information. If you are not using a particular type of sensor supported by the TX unit, you should disable it by commenting out the respective line in the source code (see this topic for more info about this subject)

uncle_bob, did you have your old Fine Offset rain gauge or wind vane at hand? (I know, the bird takes the anemometer cups )
Try connecting them to the board. Or better, you could start with the DHT22 sensor...

Cheers Werk_AG

PS: Sometimes I reply to your posts as if I'm talking to everyone and not just with you. Sorry, I think you understand why.