4 US-Made Number Type 43 #43 Vacuum Tubes Lot Of Four Photo multiplier

4 US-Made Number Type 43 #43 Vacuum Tubes Lot Of Four Photo multiplierThis lot of four US made type 43 tubes was tested our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measured as follows: 40, 59, 62 and 76 where minimum (65%) is 58 and 100% is 89. 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

new in box Mullard 6HA5 / EC900 tube tested to spec on our Paul Hart-calibrated TV7/U

66 and 74 where minimum (65%) is 57

They have Y5E and 9-22 codes

As I write

6 milliamps' plate current while Tube Two drew 27

This lot of four Sylvania 12Q7GT tubes tested to spec on our Paul Hart-calibrated TV7/U

It tests below the cusp

I could find precious little information on this two-record set with my baby Russian

new in box RCA 5750 / 6BE6 tested to spec on our Paul Hart-calibrated TV7/U

Two of these tubes are available initially in this Dutch Auction

These nine US-made 5AT8 tubes tested to spec on our Paul Hart-calibrated TV7/U

Plates: gray ladder plate