No type 71A RCA radio audio amplifier vacuum 2 tubes valve tested ST 71 371 271
Bottom side foil getter, tube tests: 80, 78 %.
Bottom side foil getter, tube tests: 80, 78 %.
Mica snubbers, bottom side foil getter, tube tests tubes have black smooth plates, clear top. Price is for all tubes pictured.
The product is a vintage Eimac electron vacuum tube with the model number 3-400Z-EIMAC(?). The type and model is rubbed off so the model is just a guess as this was an estate sale find. This particular tube has 5 pins and is untested and I have no way to test it so selling for parts. It may work as intended. Vacuum tubes were commonly used in vintage audio and video equipment for amplification or signal modulation purposes. Eimac is a reputable brand known for producing high-quality vacuum tubes for a variety of electronic applications.
We know nothing about these other than they are vietnam era, mil-spec. They were acquired from a radio enthusiasts estate. Listed as parts since units are untested.
We know nothing about these other than they are vietnam era, mil-spec. They were acquired from a radio enthusiasts estate. Listed as parts since units are untested. Units are untested. They look new, imo, judging by condition of pins, glass and printing on glass.
We know nothing about these other than they are vietnam era, mil-spec. They were acquired from a radio enthusiasts estate. Listed as parts since unites are untested. Units are untested. Most look new, imo, judging by condition of pins, glass and printing on glass.
We know nothing about these other than they are vietnam era, mil-spec. They were acquired from a radio enthusiasts estate. Listed as parts since units are untested. Units are untested. They look new, imo, judging by condition of pins, glass and printing on glass.
We know nothing about these other than they are vietnam era, mil-spec. They were acquired from a radio enthusiasts estate.
Both Tested strong on an Amplitrex AT1000 with the following results (as photographed): Regular pin- 71% ip and 87% gm Gold pin (realistic label) 87% ip 89% gm
Amplitrex AT1000 tested strong 82% emissions and 76% gm