1 pair) UX-226 RCA Radiotron balloon used/good 1930 era – same build
1 tube) 3.9ma Gm=800 slightly taller bottle
1 tube) 3.6ma Gm=900
$10.80 $35.99
1 pair) UX-226 RCA Radiotron balloon used/good 1930 era – same build
1 tube) 3.9ma Gm=800 slightly taller bottle
1 tube) 3.6ma Gm=900
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