Matched Pair Raytheon 717A VT-269 JAN-CRP-717A Vacuum Tubes

Matched Pair Raytheon 717A VT-269 JAN-CRP-717A Vacuum TubesThis matched pair of milspec Raytheon 717A JAN CRP 717A VT 269 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 18 for Tube One and 22 for Tube Two where minimum (65%) is 16 and 100% is 25. They both have World War Two era SC 8762A US Army Signal Corp codes and nifty US Navy anchor logos. I am playing them as I write in my Musical Paradise MP 301 MK3 and

but this was no issue with the amp at full volume and when actuating the amp's controls

This book is in fine condition

new in box 12A7 tubes tested to spec on our Paul Hart-calibrated TV7/U

An excellent performance and live recording as well

32 and 33 where minimum (65%) is 25

34 and 35 where striking range is between 30 and 40

This Wizard type 80 rectifier tube was tested on our Paul Hart-calibrated TV7/U

50 and 60 where minimum is (65%) is 36 and 100% is 55

These five US-made

This new old stock-testing Silvertone round plate type 56 triode was tested on our Paul Hart-calibrated TV7 for shorts

This matched pair of Hytron gray glass 6V6GT output tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volts for shorts

a button getter