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22-024 CUSTOM MANUFACTUFIED FOR RADIO SHACK A DIVISION OF TANDY ELECTRONICS LIMITED OPERATING INSTRUCTIONS Radio Shack new 'Micronta' Transistor Tester is capable of ckecking a wide range of transistor types, either 'in circuit' or out of circuit. Sep 2, 2010 - looking for a manual for micronta 22 221 - Measuring Tools & Sensors question. Need manual for MICRONTA model 63-712 lcd world time alarm clock? How do u set this thing?! Mar 25, 2010| Bulova Watch 3 Answers.
Lafayette Radio - History We had a Lafayette franchise store (small music/stereo store) in my small town - largely for the stereo/audiophile products. Walt, the two tube VTVM - acronym for Vacuum Tube Volt Meter. Many were either updated revisions of the Hewlett-Packard 410B - 'Cadillac' of VTVM's OR clones of the Heathkit VTVM series designs (e.g. IM-18 or IM-28). Heathkit Schematics Common practice found One tube usually functioning as a Dual Diode, 6AL5 and the other tube a Dual Triode, 12AU7 being one of the most popular tubes seen in VTVMs.
Tone Lizard is a guitar amp/audiophile web page, BUT has a good page for legacy VTVM equipment! The 1954 ARRL Amateur Radio Handbook, p. Has an article on building your own VTVM!