SKU:81205868797
Matched Septet Sylvania 7A7 Vacuum Tubes Lot Of Seven
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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 28 - Aug 2
Description
Matched Septet Sylvania 7A7 Vacuum Tubes Lot Of SevenThis new old stock testing, perfectly matched trio of Sylvania 7A7 tubes was tested on our Hickok 800 for shorts, gas and transconductance. There were no shorts or gas. All measured 2100 micromhos where new nominal is 2000 and minimum (65%) is 1300. 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
new in box (for Tube Two) aesthetically-matched pair of gray glass RCA 12SL7GT dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts
Three tested 40 and the rest measure in the mid 40s
They measured 38
and 59 where minimum (65%) is 48
It measured 56/52 where minimum (65%) is 40/40 and 100% is 62/62
This RCA 6JE6A tube tested 93 on our Paul Hart-calibrated TV7/U where minimum is 54 and new is 100
Transconductance measured 2220 micromhos for Tube One and 2460 for Tube Two
These three new old stock-testing US-made 1H4G tubes were tested on our Paul Hart-calibrated TV7/U for shorts
new in box Amperex 6CB6A / 6CF6 tubes tested to spec on our Paul Hart-calibrated TV7/U
I have played them in my Radio Craftsmen RC-2 monoblocks (with adapters
a good-very good logo
mesh plate tubes both tested 32 on our Paul Hart-calibrated TV7/U where minimum (65%) is 25 and 100% is 38
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