Really Useful Information for Vintage Radio Enthusiasts

I've compiled the following stuff which may save a lot of time looking through data sheets or books (even if you have them!)


(radios only… someone else can do the TV bit)
Later volumes carried an index but the index for the earlier volumes were combined into a single volume and it's often this one that's hard to find in bookshops hence many wasted hours searching through pages.


List of Intermediate Frequencies for OLD radios
(earliest to just Post-War)

If you align a radio to the wrong frequency you'll find that the dial markings will be out and the gain at one end of a waveband will be low because the tracking won't be right. If you peak a radio onto a single frequency, whose circuits should be stagger-tuned, it'll howl and be a bit unstable. You'll also find it difficult to tune in stations and drifting will be a problem as it warms up. Audio fidelity will also suffer because you'll lose the bandwidth required for higher frequencies.


List of Intermediate Frequencies for Valved Communications Receivers

The two sets of information provided include commercially available sets and "Government Surplus" types

Commercial types

Government Surplus types

Valve Line-Ups For Old Radios

This is a series of listings by "Mullard" for Radios around in 1933 by type

and by maker Radios around in 1933

together with a list of equivalent manufacturers' valve types

Also a listing for Radios around in 1944

Wavetek 2407 Signal Generator Operating Manual

Note that this is a 12 Mbyte PDF File

Safety aspects of repairing old radios

 Convert dBm to watts and volts

 UK Air Band Frequencies

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