Up for sale, a pair (2) unused NOS General Electric 6BX7 GT tubes, labelled Motorola. Perfect condition, US late 1960s. As you may know, Motorola selected the best US and foreign tubes. These are identical, codes 69-39, 188-20. Large gray plates. A powerful tube - some people design preamps for these, instead of 6SN7 or 6SL7.
Test well on Bill Eccher-calibrated Hickok 539C tester at:
7500/7300 and 23 / 27 mA current. (minimum 4800)
7300/7500 and 25 / 27mA current.
Buyer will receive 2 identical GE tubes in original boxes, as shown. Asking $32. Will be well-packed and shipped within US, $4 more by US Postal. Thanks for looking.
-Pete
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