GCOLVIN
DUDU7 update 3.5 (2024/12/22). I also had poor station reception, compared to the older Isudar it was bad, I thought it was a different radio chip. Today I was reading Telegram DUDUAUTO and I found information that in the factory settings (108) there is an option to turn on phantom power to the antenna, that is, when it is turned on, there is 12v on the center wire of the antenna output, which powers the amplifier in the antenna. I don't have an amplifier, I have a passive antenna, I had it turned off in the settings, I tried turning it on and the signal is excellent. This means that this function is reversed. The power supply was interfering with my signal. Try switching it, maybe you have the same problem. Those who have an antenna amplifier powered by coaxial, for example VW/Skoda/Seat group cars, usually have an active antenna and need this power supply, those who bought a power adapter have wasted money, just turn on the power supply in the factory settings.