Ten Year Rule
ard at p850ug1.demon.co.uk
Sat Nov 28 12:29:33 CST 2009
> Chuck Guzis wrote:
> > Still, if you want to start simple, there's the Alfred Powell Morgan
> > 1941 "First Radio Book for Boys". Extermely popular way back when,
> > so there are still used copies available.
> Um what about variable caps and other hardware? I got a ham receiver
THey are not hard to find. I am sure they turn up on E-bay. Or grab a
junker AA5 radio and remocve the rtuning capactior, If it's too high a
capacitance, rip off some of the moving plates (seriously).
I really would recomend the 'Impoverished Radio Experimenter' books.
They're fairly modern and full of tips like this. THey are _not_ a course
in how to desing with valves, but you can make several radio receivers
from said books. Read them alongisde other books.
If you're seriously mad (that is a term of honour, of course), then you
might try 'The voice of the cyrstal' and 'Instruments of amplification'.
They coaver mauing radio receivers using _no_ commercial components. OK,
he dose yuse enammeled copper wire :-). The first book covers cycstal
sets (and one chapeter is making the variable capacitor), the second
covers making (very poor, but still hackish) valves and transistors.
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