Schematics, Service manual or circuit diagram
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List of 20 HF Labs models
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HF Labs 11741932Rider3HF Labs1HF Labs 1174 schematic circuit diagram
HF Labs 16061932Rider3HF Labs2HF Labs 1606 schematic circuit diagram
HF Labs 2001932Rider3HF Labs2HF Labs 200 schematic circuit diagram
HF Labs 2221932Rider3HF Labs1HF Labs 222 schematic circuit diagram
HF Labs 2251932Gernsback3Radio498HF Labs 225 schematic circuit diagram
HF Labs 2261932Gernsback3Radio497HF Labs 226 schematic circuit diagram
HF Labs 2271932Gernsback3Radio499HF Labs 227 schematic circuit diagram
HF Labs 2381932Gernsback3Radio498HF Labs 238 schematic circuit diagram
HF Labs 2421932Gernsback3Radio497HF Labs 242 schematic circuit diagram
HF Labs 2601932Gernsback3Radio499HF Labs 260 schematic circuit diagram
HF Labs 4 Tube1935Rider6Misc highfrequencylaboratories12HF Labs 4 Tube schematic circuit diagram
HF Labs 9 ;In line1930Rider1HF Labs1HF Labs 9 ;In line schematic circuit diagram
HF Labs 9 ;In Line ;Battery1930Gernsback1Radio356BHF Labs 9 ;In Line ;Battery schematic circuit diagram
HF Labs 9 In line1930Rider1HF Labs1HF Labs 9 In line schematic circuit diagram
HF Labs 9 In Line ;Battery1930Gernsback1Radio356BHF Labs 9 In Line ;Battery schematic circuit diagram
HF Labs AC Special1930Rider1HF Labs1HF Labs AC Special schematic circuit diagram
HF Labs IsoTone 101930Rider1HF Labs2HF Labs IsoTone 10 schematic circuit diagram
HF Labs MasterTone ;1929 Model1930Gernsback1Radio356BHF Labs MasterTone ;1929 Model schematic circuit diagram
HF Labs MasterTone ;1929 Model1930Rider1HF Labs2HF Labs MasterTone ;1929 Model schematic circuit diagram
HF Labs MasterTone ;1931 Model1930Gernsback1Radio356AHF Labs MasterTone ;1931 Model schematic circuit diagram

These radio, TV, record player and tape or cassette recorder schematics,circuit diagrams and service manuals are mostly high quality, very readable scans and will usually be Emailed within an hour or two, if I need to scan an item, or it's the middle of the night here (it is 10:57 in the UK) it may take a little longer! Specialising in British schematics Roberts, Hacker, Bush etc. also American and German manuals feature strongly, search for what you need. Multi page manuals are Emailed as pdfs. Please Email if you have any queries, or you require any vintage parts for your repair I'll let you know what I have! Thanks for looking, Mike.
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90V/1.4V Battery Eliminator

90V/1.4V battery eliminators available at £29

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Fill in the "Make" and "Model" boxes, if you are unsure of the model, leave it blank and I will list ALL models for that manufacturer, similarly if you only have the model number leave "Make" blank and I will list similar model names from ALL manufacturers.
More explanation here. Some sources searched :-
J.F. Rider's Perpetual Rider 1920-54
Trader Service sheets Trader 1933-69
Beitman's Radio Diags Beitman 1926-69
Beitman's TV Diagrams Beitman 1947-70
Gernsback Radio Diags. Gernsback 1922-34
Empfanger Schaltungen ES 1928-57
Broadcaster Supplements Broadcaster 1934-42
Radio and TV 36 vol set RTV 1945-86
Radio and TV 5 vol set RTV5 1945-54
Crosley Service Suppls. Crosley 1929-42
My Pre-scanned Files File
The search logic is slightly "fuzzy" in that it's case insensitive and ignores punctuation so, model TR-510 is the same as tr510, and G.E.C is the same as "gec".

(193650 schematics* by 1685 different manufacturers indexed!)
Updated 27th. Nov 2020


Some free books and stuff you might find helpful in repairing your radio.

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