RCA 1642 US Navy CRC-38233 Vacuum Tube Milspec Micanol Base 17KV6 Noval T37 All four tubes' diodes tested

All four tubes' diodes tested fine as well

This nicely-illustrated story book is in very good condition

This Sylvania milspec / industrial 5814 / 12AU7 / ECC82 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

Their internal structures are all the same

RCA 1642 US Navy CRC-38233 Vacuum Tube Milspec Micanol Base 17KV6 Noval T37 All four tubes' diodes testedThis 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