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Provides service manuals, schematics, and reference material for technicians involved in restoring and maintaining sets built from 1921 to 1936. Also includes parts fabrication drawings and high-quality redrawn schematics. The Antenna section features indoor installations from the manufacturer's instructions.

Vintage radio restoration service, by Ron Ramirez Enterprises. Features a gallery of older Philco models, downloadable schematics, do-it-yourself servicing and tuning tips, identification and dating guide.

Database of schematics of Italian-made radios as recent as 1950, available in pdf format. Requires free registration. [English, Italian]