11 US-Made 5GH8 5GH8A Vacuum Tubes NOS NIB Lot Of Eleven Avenda D Hobbs

11 US-Made 5GH8 5GH8A Vacuum Tubes NOS NIB Lot Of Eleven Avenda D HobbsThese eleven new old stock, new in box US made 8AW8A tubes tested to spec on our Paul Hart calibrated TV7 U. 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

GT and JY date codes

Additional Characteristics: J-slot base

This matched pair of Sylvania-MANUFACTURED

new in box US-made 6CY5 tubes tested to spec on our Paul Hart-calibrated TV7/U

These three Tung-Sol-MANUFACTURED 12V66GT power tubes were tested on our Paul Hart-calibrated TV7 for shorts

Transconductance measured (From left to right): 42

44/50 and 52/50 where minimum (65%) is 40/40 and 100% is 62/62

25K center-tapped interstage transformers is sold as-is as I have no means of testing it

Transconductance measured 44 and 44 where minimum (65%) is 35

This matched quad of new old stock-testing Sylvania 7B6 tubes tested 1033 micromhos for Tube One and 1050 for Tube Two on our Hickok 800

42 and 45 where minimum (65%) is 30

These tubes have acid-etched codes and designations as well as silk-screened 67-05 67-22 188-5 and 68-26 188-5 67-50 production run/provenance codes