RCA 1642 US Navy CRC-38233 Vacuum Tube Milspec Micanol Base 17KV6 Noval T37 new in box RCA 6DW4B

new in box RCA 6DW4B tubes tested to spec on our Paul Hart-calibrated TV7

This nicely-illustrated story book is in very good condition

All four tubes' diodes tested fine as well

The spine is in fine shape with no loose pages

RCA 1642 US Navy CRC-38233 Vacuum Tube Milspec Micanol Base 17KV6 Noval T37 new in box RCA 6DW4BThis milspec RCA 1642 dual triode was tested on our Paul Hart calibrated TV7 U. or shorts, gas and transconductance. There were no shorts and it measured a perfectly balanced 44 44 where minimum (65%) is 34 32 and 100% is 52 52. It has a micanol base; a D getter; US Navy markings and excellent flashing. 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