[werk_ag]

Thanks for the information, I use a single board TX with the last software package.
I did not install the TMP36 sensor on it.
the other sensors are:
- TH sensor0 = SHT31
- TH sensor1 = DHT22
- F0 wind vane
- F0 anemometer
- F0 rain
- Solar UV-30A
- pyranometer

in the serial monitor, I have a good reading at 17-second intervals, no error, no frame lost, missing or truncated.
On the receiver, I receive 1 frame about 20, it's been several minutes without decoding the data, so - - - on the display. I moved away, I moved the units together, the coding was changed to different values.

Ok, so any problem with reading the T/H sensor can be discarded
With this setup, the TX led on the TX board should blink every 3 seconds (wind data is sent each 3 seconds) or even more frequently, and the receiver should get a data packet more or less at the same frequency. Enable the Relay Data function on the receiver software (even if you don't have installed the transmitter module) and check the TX led blinking frequency. It will blink everytime the receiver gets a data packet.

I had this problem on the old board RX that I keep in test.
On this new RX board, all components are new.
On this new TX board, all components are new.

i try to find an issue with the old TX / RX boards.
thanks

I'm not sure if I correctly understood what you mean, however if you have more then one TX unit powered at the same time, each one should have a different unit ID, otherwise the data packets will collide constantly.