Dear Robin2,
Yes,the messages came about 1 per second.
I didn't try the connection-test program.
I am a newer for this section. Can you help me to test connection.
I tried again as follow site.
https://www.brainy-bits.com/how-to-use-the-nrf24l01-2-4ghz-wireless-module/#comment-151
I used Arduino Uno and NanoV3.
A - NRF24L01+PA+LNA with Antenna
B - Black one (No antenna)
C - Green one (No antenna)
When I use A with Nano, It is working(Transmitting and receiving). The Nano doesn't work with other modules. (This example didn't work anytime)
Thanks
Hemantha