by W1UJR | Aug 20, 2017 | Bruce's Bench 2017
I removed the sliding coil assembly, often called a “catacomb coil” for cleaning and service. Needed it too, 80 some years of dirt, and old grease build up make it a mess. Removed the coil sets, used a sharpie to id the location with small dots, and threw...
by W1UJR | Aug 19, 2017 | Written Word
The Doerle sets, designed by radio fan Walter C. Doerle of Oakland, CA, were a popular regenerative receiver scheme of the 1930s. In December 1931 the magazine Short Wave Craft carried Doerle’s first article about a simple two-tube regen receiver. The set,...
by W1UJR | Aug 19, 2017 | Bruce's Bench 2017
Continued on with the restoration of the National NC-101X today. Removed the sheet metal enclosure, which required removal of all knobs again, then carefully undid the front drive gear, part of the rack and pinion gear set that moves the “catacomb” coil...
by W1UJR | Aug 7, 2017 | Bruce's Bench 2017, Uncategorized
Ham Radio QSL Cards – In the early days of ham radio, when making shortwave contact with a station across the state was a novelty, across the country was astounding, and transoceanic contacts where nearly unheard of, hams would confirm contact by sending each...
by W1UJR | Aug 6, 2017 | Bruce's Bench 2017, Uncategorized
The first thing I like to undertake when staring a restoration is to decide if I am restoring or repairing. For me a restoration is to make the unit look, and function as new again, with correct period parts and repair techniques. A “repair” means that I...
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