ICOM 375410 Manuale Utente

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BASIC MANUAL
 
Recommendation
CLEAN THE RECEIVER THOROUGHLY 
IN A BOWL OF FRESH WATER after 
exposure to saltwater, and dry it before 
operating. Otherwise, the receiver’s keys, 
switches, and controllers may become 
unusable, due to salt crystallization, and/or 
the charging terminals of the battery pack 
may corrode.
NOTE: If the receiver’s waterproof 
protection appears defective, carefully 
clean it with a soft, damp (fresh water) 
cloth, then dry it before operating.
The receiver may lose its waterproof 
protection if the case, jack cap, or 
connector cover is cracked or broken, or 
the receiver has been dropped.
Contact your Icom distributor or your 
dealer for advice.
 
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-R30 receives RF 
energy from 0.100 MHz* to 3304.99999 
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-R30 may receive its own oscillated 
frequency, resulting in no reception or only 
noise reception, on some frequencies.
The IC-R30 may receive interference 
from extremely strong signals on different 
frequencies or when using an external 
high-gain antenna.