Mooncat Posted October 31, 2006 Report Share Posted October 31, 2006 As most commercial FM radio receivers are not fitted with an external aerial connection, does anyone know how to add one, for use in poor signal locations such as caravans. Quote Link to comment Share on other sites More sharing options...
audioguru Posted October 31, 2006 Report Share Posted October 31, 2006 Most portable FM radios use the earphones cable or a whip aerial.My car radio also has a whip aerial.My home stereo has "rabbit ears" as its FM aerial.My clock radio uses its power cord as its aerial.FM radios need an external aerial. Many AM radios have an internal ferrite bar aerial.Is a caravan a motor home? Then use a car radio with a car radio aerial. Quote Link to comment Share on other sites More sharing options...
zak4000 Posted November 1, 2006 Report Share Posted November 1, 2006 wow, i never know that a power cord could be used as an aerial. How is that done and how are earphone made in to an aerial? Quote Link to comment Share on other sites More sharing options...
audioguru Posted November 1, 2006 Report Share Posted November 1, 2006 The power cord or earphones cable is made a high impedance at FM requencies with a small inductor in series so the signal isn't shorted, then a small capacitor couples the signal that is picked-up. The small capacitor is frequently just the wires close together side-by-side. Quote Link to comment Share on other sites More sharing options...
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