My Crystal Radio - UK Vintage Radio Repair and Restoration Discussion Forum

vu2nan-nandu · 8th Jul 2014, 5:01 am

This is the circuit of my fixed tuned simple crystal radio to receive a 200kW local broadcast station on 612kHz.

Parts required are a pair of sensitive balanced-armature headphones, a moulded inductor and any germanium transistor with its base and emitter shorted.

With a long wire antenna and water-pipe earth, reception is loud enough to be heard faintly even at a distance from the headphones.

johnyjf · 8th Jul 2014, 10:25 pm

The don't come any simpler than that! Not sure you shouldn't check radiation levels from your local transmitter though, might be bad for your health!

vu2nan-nandu · 9th Jul 2014, 5:03 am

Hi Johnyjf,

Thanks! No problem, the transmitter is 25 km away.

Regards,

Nandu.

8th Jul 2014, 5:01 am	#1
vu2nan-nandu Pentode Join Date: Jul 2014 Location: Bangalore, India Posts: 132	My Crystal Radio This is the circuit of my fixed tuned simple crystal radio to receive a 200kW local broadcast station on 612kHz. Parts required are a pair of sensitive balanced-armature headphones, a moulded inductor and any germanium transistor with its base and emitter shorted. With a long wire antenna and water-pipe earth, reception is loud enough to be heard faintly even at a distance from the headphones. Attached Thumbnails

8th Jul 2014, 10:25 pm	#2
johnyjf Tetrode Join Date: Apr 2013 Location: Reading, Berkshire, UK. Posts: 56	Re: My Crystal Radio The don't come any simpler than that! Not sure you shouldn't check radiation levels from your local transmitter though, might be bad for your health! __________________ Regards Johnyjf

9th Jul 2014, 5:03 am	#3
vu2nan-nandu Pentode Join Date: Jul 2014 Location: Bangalore, India Posts: 132	Re: My Crystal Radio Hi Johnyjf, Thanks! No problem, the transmitter is 25 km away. Regards, Nandu.