Thinking about a military radio Field Day. Attach photo of my all purpose Field Supply for use on my BC-1306, GRC-9, GRC-109, RS-6 etc. I fabricated a chassis power connector from an PL-279 connector. I used to have a bunch  of those French medical boxes but have either used them or gave em all away. They are still available from surplus dealers and make nice power supply enclosures.
Z