Matched Pair Raytheon 717A VT-269 JAN-CRP-717A Vacuum Tubes 6JD6 Nonal This paperback book is in

This paperback book is in very good condition

The GM-LABELED ones all have 312 Sylvania EIA codes

These three RCA large logo 6F5s were tested on our Paul Hart-calibrated TV7/U for shorts

This new old stock-TESTING matched pair of Sylvania 6SJ7s was tested on our Paul Hart-calibrated TV7/U for shorts

Tube Three (diodes): 56/53

Matched Pair Raytheon 717A VT-269 JAN-CRP-717A Vacuum Tubes 6JD6 Nonal This paperback book is inThis 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 20 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