PRECAUTIONS
R DANGER HIGH RF VOLTAGE! NEVER
attach an antenna or internal antenna connector dur-
ing transmission. This may result in an electrical shock
or burn.
R WARNING! NEVER
with a headset or other audio accessories at high vol-
ume levels. Hearing experts advise against continuous
high volume operation. If you experience a ringing in
your ears, reduce the volume or discontinue use.
R WARNING! NEVER
transceiver with wet hands. This may result in an elec-
tric shock or damage to the transceiver.
R WARNING! NEVER
objects protrude into the transceiver or into connec-
tors on the rear panel. This may result in an electric
shock.
R WARNING!
Immediately turn the transceiver
power OFF and remove the power cable if it emits an
abnormal odor, sound or smoke. Contact your Icom
dealer or distributor for advice.
CAUTION: NEVER
stable place (such as on a slanted surface or vibrated
place). This may cause injury and/or damage to the
transceiver.
CAUTION: NEVER
the transceiver. This may reduce transceiver perfor-
mance and/or damage to the transceiver.
In particular, incorrect settings for transmitter circuits,
such as output power, idling current, etc., might dam-
age the expensive final devices.
The transceiver warranty does not cover any problems
caused by unauthorized internal adjustment.
CAUTION: NEVER
top, rear or bottom of the transceiver.
CAUTION: NEVER
snow or any liquids.
CAUTION: NEVER
place without adequate ventilation. Heat dissipation
may be reduced, and the transceiver may be dam-
aged.
CAUTION:
The line-voltage receptacle must be
near the transceiver and must be easily accessible.
Avoid extension cords.
CAUTION:
The transceiver weighs approximately
25 kg (55 lb). Always have two people available to
carry, lift or turn over the transceiver.
operate the transceiver
operate or touch the
let metal, wire or other
put the transceiver in any un-
change the internal settings of
block any cooling vents on the
expose the transceiver to rain,
install the transceiver in a
DO NOT
use harsh solvents such as benzine or al-
cohol when cleaning, as they can damage the trans-
ceiver's surfaces.
DO NOT
push the PTT switch when you don't actu-
ally desire to transmit.
DO NOT
use or place the transceiver in areas with
temperatures below ±0°C (+32°F) or above +50°C
(+122°F).
DO NOT
place the transceiver in excessively dusty
environments or in direct sunlight.
DO NOT
place the transceiver against walls or put-
ting anything on top of the transceiver. This may over-
heat the transceiver.
Always place unit in a secure place to avoid inadver-
tent use by children.
BE CAREFUL!
If you use a linear amplifier, set the
transceiver's RF output power to less than the linear
amplifier's maximum input level, otherwise, the linear
amplifier will be damaged.
BE CAREFUL! NEVER
cover when transmitting continuously for long periods.
The top cover may be hot.
Use Icom microphones only (supplied or optional).
Other manufacturers' microphones have different pin
assignments, and connection to the IC-7800 may dam-
age the transceiver or microphone.
The LCD display may have cosmetic imperfections
that appear as small dark or light spots. This is not a
malfunction or defect, but a normal characteristic of
LCD displays.
During maritime mobile operation, keep the trans-
ceiver and microphone as far away as possible from
the magnetic navigation compass to prevent errone-
ous indications.
Turn [I/O] switch (on the rear panel) OFF and/or dis-
connect the AC power cable from the AC outlet when
you will not use the transceiver for long period of
time.
ii
touch the transceiver top
Need help?
Do you have a question about the IC-7800 and is the answer not in the manual?
Questions and answers
My 7800 automatically goes into Split mode when transmitting on the "Main" side of the radio. It transfers the Main frequency to the "Sub" frequency, goes into split mode and transmits on the Sub side of the radio. What Causes that and how do I cancel that?