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!)
Click the underlined heading to get to the INFO
I don't supply circuit diagrams, for these you might
try Paul Ollivier at Savoy
Hill Publications who has large stocks of everything going
back to the Ark
Just say Allan sent you...
(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.
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
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 (warning this is a BIG file so hang on)
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