16-04-2012, 05:38 PM
Today I amused myself by making a TRF radio out of a book I was given for my ninth birthday.
It worked but I can see why this sort of thing put me off as child: if I hadn't got a Bits Box it would have cost a good few bob and been inferior to a radio from PoundLand.
It seemed distinctly temperamental and I could barely breath without upsetting it, though the construction method is asking for dodgy connections, and I soldered the wires to he variable capacitor and pot. The controls have knobs as touching them effected things as well.
When it was tuned in the sound quality was surprisingly good, though for "Crystal Earpiece" read "LM386 and a filleted R600." There was nothing as crude as a battery on the bench either!
- Joe
It worked but I can see why this sort of thing put me off as child: if I hadn't got a Bits Box it would have cost a good few bob and been inferior to a radio from PoundLand.
It seemed distinctly temperamental and I could barely breath without upsetting it, though the construction method is asking for dodgy connections, and I soldered the wires to he variable capacitor and pot. The controls have knobs as touching them effected things as well.
When it was tuned in the sound quality was surprisingly good, though for "Crystal Earpiece" read "LM386 and a filleted R600." There was nothing as crude as a battery on the bench either!
- Joe
