Category: Uncategorized


  • Sylvania 702A

    This is Sylvania 702AT/R switch vacuum tube. It is dated November 1944 and listed as U.S Army Signal Corp stock. I have not been able to find much about this specific tube other than it seems to have been used in the transmitter sections of WWII era radars. It appears this was the first TR…

  • Eimac V-127A

    Eimac V-127A

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    The Eimac vacuum tube was produced in the late 30s and primarily used as part of the power oscillating circuit in the American radar system SCR-268 (Figure 2). The radar system would use 16 of these tubes to create the power oscillation section. The 16 v-127As would operate in pulse produce an out put power…