> Has anyone tried to build a voltage controlled short wave radio
> module?
i've been toying with the idea for a while - the last radio i bought for
experimentation got liberated by my girlfriend and now lives out a peaceful
existence permanently tuned to radio 4
i've thought about building a couple of crystal radios to use as voltage
sources, but as always, never quite gotten around to it. to voltage control
the tuning of the radio you'd need to control the variable tuning capacitor
(or don't radios have those anymore...)
i did get a couple of really cheap walkman type fm radios as corporate
gifts, but again - one of them got liberated - they only run on 2 x AAA
batteries, so i could power them from say the UEG, clamping the voltage at
0-3v (or not as the case may be !)
i feel a bank holiday afternoon of discover here (i just dug out the last fm
radio)
nurse - the pliers !
cheers
paul b
sheffield
uk