DG’s Practical Notes, R#13 Hammarlund HQ 100, 1956-1958 [v2]

DG’s Practical Notes
© 2021-2023 Daniele Giacomini, [email protected]
  / appunti2  
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https://daniele-giacomini.blogspot.co...
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The full project is available at Internet Archive:
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This work is published with NO GUARANTEE AT ALL, OF ANY KIND.

======== Content of this video ========
(00:00) - Front cover
(00:10) - ⚠ Warning
(00:20) - Table of context
(00:40) - Introduction
(02:24) - Original documentation and schematics
(02:40) - Safety first
(04:21) - Current limiting light bulbs
(05:29) - Cord under the chassis
(06:23) - Right tools (for the alignment)
(08:08) - Restoration of the I.F. transformers
(27:11) - Calculating the capacitor values
(28:08) - Proper I.F. alignment
(30:24) - Dials and front-panel installation or removal
(32:53) - Q Multiplier and SSB oscillator (BFO)
(36:58) - S-Meter zero adjustment
(37:45) - R.F. alignment
(42:15) - Rust and paint
(43:53) - Front panel and 3D writings
(46:56) - Casualties and screws
(47:11) - Reveal
(58:28) - Back cover
==================================

Tags: vacuum tubes, antique radios, old radios, vintage radios, old electronics, vintage electronics, vacuum tube equipment