4 RCA 12SG7 VT209 VT-209 Vacuum Tubes Valves Milspec Small Logo Lot Of Four Juan Rosenkavalier had excellent frequency response and

had excellent frequency response and was very quiet in my Bottlehead

This is the type of bracelet that came with the digital watches of that era

Tube One measured 43 while Tube Two measured 46 where minimum (65%) is 32 and 100% is 49

chamfered O getters and rectangular radiators for cooler operation and longer tube life

Tube One measured 56 while Tube Two measured 57 where minimum (65%) is 38 and 100% is 58

4 RCA 12SG7 VT209 VT-209 Vacuum Tubes Valves Milspec Small Logo Lot Of Four Juan Rosenkavalier had excellent frequency response andThese four milspec RCA small logo 12SG7 VT 209 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Their readings are 54, 56, 66 and 71 where minimum (65%) is 42. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS.