Revision as of 13:28, 12 February 2023 by Peter(talk | contribs)(Created page with "{{Vacuum Tube |Type=Dual Triode |Number=12BZ7 |EuroNumber= |Part_nos=154-0048-00 |Description=dual triode |Used_in=524 |Designers= }} with a {{B9A base}}. ==Used in== * 524...")