This video demonstrates a simple method to improve the grounding to the aluminium extrusions on the cheap Chinese uSDX tranceivers. Much time was put into this by Tom VE7NGK and I have simply used his information to take this a step further.
Please consider buying a Tru usdx via the original designers DL2MAN and PE1NNZ if you want one to work correctly out of the box and to get any product support. #tomsworkshop5856
https://youtu.be/oPDza8W7pGQ