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Lot of 4 GE JAN 5670W Vintage Triode Electron Tubes 5960-00-134-5994 Equal 2C51 Lot of 4 GE P/N: JAN 5670WNSN: 5960-00-134-5994 Vintage Triode Electron TubesTube Type Double Ttriode VHF Base Noval 9 Pin Miniature ( USA Pico-9 ) B9AFilament Vf 6.3 Volts / If 0.35 Amps / IndirectDescription This is a High-Rel Version of the 2C51 High-Frequency Twin Triode. Mu 35. Intenral shield connected to Pin 5 (IS).Interchangeable with 396A = GL5670 = CK5670 = 2C51 = 5670WA = Ck5670WA = GB5670NEW military-grade GE JAN 5670W vacuum tubes. The GE 5670W provides a premium replacement for 2C51 and other 5670 tubes. The 5670 tube can also generally be used as an upgrade for 6N3 tubes used in headphone amps and other audio preamps and amplifiers (note that the glass envelope of the GE 5670W tube is approximtely 5 mm shorter than 6N3 tubes). The “W” designation in the tube number refers to ruggedized, military grade, tubes; better quality control and internal design changes to enhance reliability.The 5670W is a rugged special quality double triode developed from the 2C51 the 5670W should indicate a special quality variant but there is little visual difference between them. It is possible that the suffix has less meaning when the original Type was a special quality type.Applications include: mixers, oscillators and amplifiers operating to VHF. Also for use in multivibrators, synchronising amplifiers and industrial control. For airborne use it was certified up to 80,000 feet. It additionally had low microphany. The latter attribute brought it to the attention of audio amplifier builders.Tubes came to us from a Major Aerospace OEM, or from a Government Excess Sale, product was from their parts stores and available for use. Other tubes from the same source have all been tested as good and working, there is no reason to believe these are not in the same condition.FREE SHIPPING IN USA Please take a look at all of the provided photos before placing your bid to thoroughly inspect the lot contents and condition. Item Condition: New – Old Stock – Packaging has been opened for inspection & photos. Return Policy: We are offering the buyer a 30 Day right of return for testing and inspection. Buyer will be responsible for the cost of return shipping. Listed for by HB – Located at: TN 38 C5, 56 Shipping weight is 0.00lbs, 2.00oz, shipped from our warehouse in Tennessee. (zip 37370) Default Shipping Service: USPS First Class Mail Tennessee residents will be charged our local 9.75% sales tax. California residents will be charged our local 10.25% sales tax. (We have offices in both Tennessee and California and are required to charge tax to any shipment sent anywhere in either state.) B#: