National Super Vacuum Tube Radio BX-730 Junk and Parts. Junk and Parts Dimensions Width approx. 42 x Depth approx. 19 x Height approx. This is an old wooden box National Super Hit vacuum tube radio BX-730. The parts seem to be intact, but they don’t make any noise, so please accept them as junk. The exterior shape has also aged and is only slightly old. This is an old wooden box national super hit vacuum tube radio BX-730 that was released for the first time locally. I would appreciate it if you could contact a professional who can repair it. (4-10 days to arrival). For expensive items we recommend EMS. Depending on the size and weight after packing the items. Weekends are not available because post office is closed. International Buyers – Please Note.