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SUPPLIED ACCESSORIES
qAntenna (FA-B04RE) ………………………………………1
wBelt clip (MB-98)…………………………………………1 set
eBattery spacer ………………………………………………1
rHand strap …………………………………………………1
tBattery pack* (BP-206) ……………………………………1
yAC adaptor*(BC-149A/D) …………………………………1
(The shape of the BC-149A and BC-149D are different.)
*Not supplied with some versions.
OPERATING THEORY
Electromagnetic radiation which has frequencies of
20,000 Hz (20 kHz*) and above is called radio frequency (RF)
energy because it is useful in radio transmissions. The IC-
R20 receives RF energy from 0.150 MHz* to 3304.999 MHz
and converts it into audio frequency (AF) energy which in turn
actuates a loudspeaker to create sound waves. AF energy is
in the range of 20 to 20,000 Hz.
*kHz is an abbreviation of kilohertz or 1000 hertz, MHz is abbreviation
of megahertz or 1,000,000 hertz, where hertz is a unit of frequency.
OPERATING NOTES
The IC-R20 may receive its own oscillated frequency, result-
ing in no reception or only noise reception, on some frequen-
cies.
The IC-R20 may receive interference from extremely strong
signals on different frequencies or when using an external
high-gain antenna.
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