Hi, and thanks for the informations. I would like to say that my antenna is an attic dipole for 40m and I use 50 ohms coax. What I didn't said in the beginning is that I disconnected the display and I used some wires to connect it to the Raduino. But the Raduino itself is still in the original socket. Can it be this happening because of the display wires ? And somebody mentioned above about a capacitor of 0.1uF in the ADC line... should I put this in paralel or in series with ADC line??
YO8UFO