1 x 71-A (71) Arcturus-Philco-NU Tube*Hot Stamped Base*Very Strong*(5 Available)

Description: 2 -71A (71) Tubes Made in USA All have Hot Stamped Base U pick or I will just send next in line Tested on Enhanced Triplet E3444 Laboratory Tester 1880 micromhos @ 23 mA - Arcturus 1800 micromhos @ 26 mA - Philco1790 micromhos @ 26 mA - Airline1750 micromhos @ 24 mA - National Union1680 micromhos @ 19 mA - Philco Bogey(100%) = 1700 micromhos @ 20 mA +/- 10% Ask any questions before buying The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures transconductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__180_Volts plate, __180_Volts screen, ___-40.5___Volts bias or Cathode resistance*What were your tubes tested at? I do combine S&H

Price: 33.99 USD

Location: Morganville, New Jersey

End Time: 2024-12-30T02:38:22.000Z

Shipping Cost: 7.75 USD