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5Y3 tubes
This 1970s GE 5Y3GT rectifier tube has ribbed gray plates, a halo getter, and a brown base. The white print on the glass has the GE logo. Tube tests as new.
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The 1976 GE 5Y3GT rectifier tubes in this precisely matched pair have gray plates and halo getters. The red print on the glass has the Motorola logo. Both tubes test as new.
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This RCA 5Y3GT full-wave rectifier tube has smooth black plates and a bottom getter. The silver or red print on the glass has the RCA logo. Tube tests as new.
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This 1970s military spec Sylvania 5Y3WGTA rectifier tube has ribbed black plates and a halo getter. The green print on the base reads "JAN 5Y3WGT." Tube tests as new.
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This 1960s military spec Mullard CV2748 / GZ30 rectifier is a 5Z4 equivalent. This indirectly-heated rectifier should be considered an upgrade for a 5Y3 tube in most circuits. The Blackburn, UK factory code is etched in the glass. Tube tests as new.
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The 1960s military spec Mullard CV2748 / GZ30 rectifier tubes in this precisely matched pair are 5Z4 equivalents. These indirectly-heated rectifiers should be considered an upgrade for 5Y3 tubes in most circuits. Both tubes test as new.
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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.
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