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4 Raytheon 12BA7 Vacuum Tubes Valves NOS NIB Lot Of Four
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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
Description
4 Raytheon 12BA7 Vacuum Tubes Valves NOS NIB Lot Of FourThese four new old stock, new in box Philco 12BA7 tubes tested to spec on our Paul Hart calibrated TV7. 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. 1. MOST FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS UP TO
Wish I knew who actually made them
nearly-perfectly-balanced 71/70 where minimum (65%) is 50/50 and 100% 12 77/77
These mesh plate National Union number 78 tube were tested on our Paul Hart-calibrated TV7/U for shorts
280 739 and F1 date codes
These nine Sylvania 6AU6 / 6AU6A were tested on our Paul Hart-calibrated TV7/U for shorts
One was made in the Netherlands and the other
new in box RCA 1G3GT / 1B3GT rectifier tubes tested to spec on our Paul Hart-calibrated TV7/U
4 dB (-92 dB is the Maxi-Matcher's noise floor)
(New US-made 6BG6s typically test with plate current readings from the mid 20s to mid 50s with transconductance within a standard deviation of 2300 micromhos or so
Noise: -85 dB / -85
These shields are 46 MM high with the top 33 MM encased in lead approximately 2
Tube One measured 60/50 while Tube Two measured 61/51 where minimum (65%) is 50/50 and 100% is 77/77
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