Quote:
Originally Posted by Celt
They performed poorly because they were only a crystal set with a two-transistor audio amp. Amazingly enough, they'd suck the life right out of a 9 volt battery in no time.
|
Boy's radios actually used a reflex circuit. Once I redid the antenna coil on an Angel 2-transistor (that was dumb, I'd sure like to have that radio today)...I replaced the smaller coil with one using more turns. The radio became much more sensitive and selective (and also drained the 9V battery quicker). Now I have several boy's radios from eBay...one of them oscillates at the high end of the band when I attach the whip antenna to it.
The first transistor of a boy's radio is actually an rf stage...
Chuck
04-13-2008, 02:08 PM
Threaded Mode