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Sonido Radio Page 21
AM Tuning & Listening Tips
Most portable radios including the Sonido Radio have an internal
AM antenna. Best performance is achieved when the radio is
swiveled on its base for maximum signal pickup from the transmit-
ting tower. This same technique can be used to help nullify
unwanted signals or radio noise. Experimentation is the best way
to see how it works for you.
Daytime reception is limited to about 300 miles maximum
because you can only receive the signal directly from the trans-
mitter site. You may receive AM stations thousands of miles away
at dawn, dusk and at night, depending on the time of year and
atmospheric conditions. The ionosphere is a layer of ions above
the earth. At night it slows and congeals into a giant mirror and
can reflect radio waves back to the earth, allowing you to receive
signals much farther away than during the day.
Distant listening is called DXing. One club that is devoted to
DXing is National Radio Club at: PO Box 164, Mannsville, NY
13661-0164. They maintain a website at: http://www.nrcdxas.org