up for sale is a rare eimac military jan-cbxt 8438/4-400a tube, the filament test good other than that it is untested due to not having the proper tester to test it. it appears to be brand new. this came from wichita boeing aircraft plant many years ago. i have several more of these same types of tubes if you need more than one. very hard to find this particular tube. good luck and good offerding.

---