3 RCA 53HK7 Vacuum Tubes Valves Milspec NOS NIB Lot Of Three All About Love

3 RCA 53HK7 Vacuum Tubes Valves Milspec NOS NIB Lot Of Three All About LoveFor sale are three new old stock, new in box RCA 53HK7 tubes. Two are American and one is Japanese. 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

There were no shorts or gas and they tested as follows:

rounded plates

These mesh plate National Union number 78 tube were tested on our Paul Hart-calibrated TV7/U for shorts

new in box GE CDS / CDX 500 watt projection bulb and its box are in pristine shape

These four US-made 6SF7 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

There is a shield between the triodes for reduced cross talk

These five Ken-Rad-MANUFACTURED 6U7 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

9 milliamps where new 6L6GCs typically test with plate current from the low 20s to mid 30s and transconductance from 2200 micromhos or so

34/34 and 38/41 where minimum (65%) is 25/25 and 100% is 38/38

Please rely on the pictures as to the true content of these albums as my Russian is worse than poor

This lot of three Arcturus 6L7 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box matched pair of milspec Tung-Sol JAN-CTL-6098 / 6AR6WA output tubes was tested on Paul Hart-calibrated TV7/U for shorts