[hornychz]

And what about our WiKi? https://wiki.weatherduino.com

I had a look through there and had not found a photo. So I looked again and found one of the Pro2 Plus receiver.
But I have not found any high quality transmitter photos and the wiki does not cover the v3.13 TX board as yet. Any more info available?
Thanks, Graham

Hello,

I don't have v3.13, only v3.12 (I think it should be nearly the same?) - maybe it will help to you? 
https://www.meteocercal.info/forum/Threa...LUS-system
https://meteo.brandysnl.cz/MyDocs/Forum/StavbaTX/



or my article from Czech server Arduino.cz https://meteo.brandysnl.cz/MyDocs/stavbaTX.pdf
(only in Czech language)

Have a fun and good luck!