Stromberg Carlson Console Radio Model 340 F - Issues Demo

In this video, we get a thorough demonstration (60+ minutes) of serious motorboating, squealing, and parasitic oscillations that can occur in a radio. The purpose of this video is to provide some feedback (no pun intended) to the owner and to request assistance from viewers as to possible diagnostic steps needed to identify and repair the issues. I appreciate any suggestions that you all might have. Thanks!