MATCHED Pair RCA Type 71A Power Tubes Engraved Base TEST STRONG 88 NOS
Item History & Price
| Reference Number: Avaluer:29782370 | Model: 71A 171 271 371 |
| Brand: RCA | Type: Power Tubes |
MATCHED Pair of Vintage RCA Type 71A Power tubes. One of the tubes has an early-style engraved base with the Cunningham logo. Both tubes feature silver plates with a bottom-mounted dimpled foil getter. Clean tubes with clear lettering, tight bases, and no loose rattles. Test STRONG! Results:
TUBE 1: 1, 500 mhos (88%) / 16.4 mATUBE 2: 1, 500 mhos (88%) / 20.2 mA
Average NEW / NOS ...spec for this type is 1, 700 mhos (100%) / 20.0 mA. Comprehensive computer-generated results sheets included!
A little bit about me and my valve testing business..... I started in the tube business as a small hobby in 2012 testing and selling a few small radio tubes. Now it has turned into a big hobby as I have sold 1000's and 1, 000's of tubes to many happy customers. I personally inspect and fully test each tube and offer a 30-day unconditional 100% guarantee on all my tested tubes. I am not a store or full-time business, but I take great pride and care in what I do, and your satisfaction is my number one goal. I have two of the best tube testers ever made that I use to fully test tubes. The Amplitrex AT-1000 Digital tester and the Triplett 3444 (with digital plate current meter) Tube Analyzer are both mutual conductance testers that can test just about any tube ever made between the two of them and can test for shorts/leakage, noise, gas, emissions, and transconductance. I have an extensive back stock of tubes, so if you have a certain brand or type you are looking for, feel free to contact me. Thank you for choosing Valves-Tubes!
TUBE 1: 1, 500 mhos (88%) / 16.4 mATUBE 2: 1, 500 mhos (88%) / 20.2 mA
Average NEW / NOS ...spec for this type is 1, 700 mhos (100%) / 20.0 mA. Comprehensive computer-generated results sheets included!
A little bit about me and my valve testing business..... I started in the tube business as a small hobby in 2012 testing and selling a few small radio tubes. Now it has turned into a big hobby as I have sold 1000's and 1, 000's of tubes to many happy customers. I personally inspect and fully test each tube and offer a 30-day unconditional 100% guarantee on all my tested tubes. I am not a store or full-time business, but I take great pride and care in what I do, and your satisfaction is my number one goal. I have two of the best tube testers ever made that I use to fully test tubes. The Amplitrex AT-1000 Digital tester and the Triplett 3444 (with digital plate current meter) Tube Analyzer are both mutual conductance testers that can test just about any tube ever made between the two of them and can test for shorts/leakage, noise, gas, emissions, and transconductance. I have an extensive back stock of tubes, so if you have a certain brand or type you are looking for, feel free to contact me. Thank you for choosing Valves-Tubes!
