Octagonal
loop antenna crystal set with horn speaker
My octagonal
loop antenna crystal ser is using an impedance matching transformer (input 200
K) and a plastic horn speaker with a sound powered element.
I’m using
also a AVAGO HSMS-2823 Diode. Because it’s an SMD I decide to mount it into a
lamp bulb, so It can fit with the aesthetics of the radio :)
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