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Personal MW Radio

Quite similar to a crystal radio set, but uses a ferrite arial and internal antenna
By 26/10/10 [Last Edited by Joseph 21/12/10]
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Quite similar to a crystal radio set, but uses a ferrite arial and internal antenna.

Schematics

Parts

Component Name/Description Quantity
R1 1.2M 1
R2 4.7k 1
R3 100k 1
C1 100nF Polyester 1
C2 220nF Polyester 1
C3 10nF Polyester 1
VC1 300pF Solid Dielectric 1
Tr1 BC109C 1
D1/D2 0A90 2
S1 SPST toggle 1
L1 Denco MW5FR ferrite arial or similar 1
SK1 3.5mm jack socket 1
B1 9 volt battery and suiting connector 1
Crystal earphone 1

Notes

House in a plastic, or other non-metal case. Crystal earpiece only, though I guess you could add some sort of buffer (such as an op-amp fed back into itself) to deal with this.

Author

R.A Penfold (From 30 Solderless Breadboard Projects - Book 1) (Including the scan in, sorry for being a bit cheeky)