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Old 26th May 2004, 3:14 pm   #12
paulsherwin
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Join Date: Jun 2003
Location: Oxford, UK
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Default Re: Building an external ferrite rod aerial

I've now built a permanent version in a wooden box, using pretty much the same components as the prototype. I hand selected a higher gain transistor (hfe 600, prototype was 300) but this doesn't make a lot of difference and any general purpose small signal silicon transistor should work (such as a BC108 or 2N2926 ).

I've just spent half an hour listening to BBC Radio Cambridge and some Dutch music station. It isn't really suitable for DXing though, since the tuning is quite precise and if it isn't tuned correctly you can't hear the DX station! Pulls in RTE R1 like a good 'un though.

I can recommend this easy and zero cost project to anybody without a good longwire aerial. Here's the circuit, such as it is (wavechange and on/off switch omitted).

Best regards, Paul
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