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(Tungsol 5U4G是最好的,極稀有 ; 有些是RCA 或 Sylvania 製造的OEM給Tungsol 打印刷(PS.此種非Tungsol製的就不是Top Getter)
Really, no difference electrically. No such thing as a 5U4. 5U4G is glass, coke bottle shape, also seen in military marking of VT-244. 5U4GA/GB are straight bottle, more rugged.
Tungsol 5U4G is best, incredibly rare, and hard to spot as many are rebranded RCA's or Sylvania's.
KenRad Vt-244 is also outstanding.
RCA 5U4G is a solid choice, as are early (Pre-1950) Sylvania 5U4G. …
評等: [我給 5 顆星!] |
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