[grunge]

Hi Werk_AG,

Many thanks for the details on RF transmissions, I should have explained that I had at least 5 metre separation due to the possibility of too much signal and over driving the RX.
BTW I got pass the auto-reboot, and it was my bad, probably late night when typing email, I went back and read my responses. The temp/humid I'm using at the moment is DHT22 not SHT22 (1 letter place on the keyboard), my apologies for this. Anyway, I made the correction and viola! I see "wind calm" and "no rain days", which is good as they are not connected.

I'll sit down and gather my data and thoughts and write up a bit more re the Battery voltage.

Graham

Further to this voltage reading incorrect, whether it is tolerance of the components (measured) or the Arduino Nano, I made the simple decision it was easier to alter the maths and get the correct reading. So for sensor 5 in the RX module, I have changed (((RX_Data[2] * 20.23) / 1024) * 100.0) to (((RX_Data[2] * 18.63) / 1024) * 100.0) and this gives me the correct measured voltage on the LCD display and on CumulusMX.

Graham