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July 07, 2013

Comments

Johan

An additional advantage a car radio has that it gets its power direct and "clean" from DC 12V battery whereas a home radio first has to transform mains AC to DC low voltage. This is very often the cause of interference esp. with a "modern" switch power supply. Because of this the car stereo also has an "unlimited" amount of power available for peaks whereas a home radio is limited by the transformer specs. On batteries even more so of course.

RADIO-TIMETRAVELLER

Less RFI noise is a huge advantage in mobile DXing. And vehicle radios with the old traditional whip antenna seem to be more sensitive than the built in windshield wire antenna.

If you have the old style whip, try extending it about 24-30 inches and it will improve the sensitivity quite a bit. Do this by getting 36 inch lengths of steel, flexible music wire in various gauges from the hobby store. Don't add too much length or you will run into overload and desense problems unless you are really out in the boondocks.

My extended whip 2006 Ford Ranger truck radio picks up more than my $400 Eton E1, though the selectivity is much worse, obviously. Mobile DXing is the way to go.

Bill
RADIO-TIMETRAVELLER

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