An excellent site which has many thousand data sheets is:-

http://www.radiomanuals.info/

These are mainly for the UK manufacturers and all are free to download.

Enjoy!    Best regards to all,

Roy

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Thanks Roy

I see they also have an American listing which contains older info on GT tubes, ballast tubes, dial lamps and midget receivers.

Carl

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Here are some mostly American schematic resources:

 

The BoatAnchor Manual Archive

 

 

 

 

Privates SABA-Forum

 

Heathkit Test Equipment Matrix

 

Heathkit Schematic Diagram Archive

 

 

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