If you’re in wartime, microwave oven door safety interlocks are out the window. The mesh of the door can be simply cut out, or the interlock microswitches pres

If you’re in wartime, microwave oven door safety interlocks are out the window. The mesh of the door can be simply cut out, or the interlock microswitches pressed down with dowels or tape. The article you linked shows that there’s frequency drift over time with a microwave, and that different magnetrons have different spectrum profiles.