My Chinese Clone uSDR/uSDX device suddenly dropped its transmitted power. Z-50 ohm. 3.5MHz, 1.6A, 9W. 3.77MHz, 1.42A, 5.5W. 7MHz, 2.15A, 5.5W. 7.17MHz, 2A, 4.1W. 10MHz, 2.1A, 1.2W. 14MHz, 1.96A, 1.1W. 18MHz, 1.82A, 0.7W. 21MHz, 1.7A, 0.5W 24MHz,1.58A, 0.2W. 28MHz, 1.5A, 0.2W. Powered by 13.8V external
Check your antenna/coax with another radio to make sure there is no problem there.
Other than that, maybe there is a problem with finals. They use inexpensive transistors so it’s an easy repair if needed.
Hello Denis, thank you, have to install new IRF1510 and hope will be 10W and more. Good luck Rosta