ICOM IC F121S User Manual

ii

the supplied microphone only. Other microphones

have different pin assignments and may damage the trans-
ceiver.

use or place the transceiver in areas with tempera-

tures below –22°F (–30°C) or above +140°F (+60°C), or in areas
subject to direct sunlight, such as the dashboard of a vehicle.

operating the transceiver without running the vehi-

cle’s engine.  The vehicle’s battery will quickly run out if the
transceiver is in transmission while the vehicle’s engine OFF.

placing the transceiver in excessively dusty envi-

ronments.

placing the transceiver against walls. This will

obstruct heat dissipation.

the use of chemical agents such as benzine or alco-

hol when cleaning, as they damage the transceiver surfaces.

CAUTION: Changes or modifications to this transceiver, not ex-
pressly approved by Icom Inc., could void your authority to operate
this transceiver under FCC regulations.

TABLE OF CONTENTS

IMPORTANT .................................................................................... i
EXPLICIT DEFINITIONS ................................................................. i
PRECAUTION .................................................................................. i
TABLE OF CONTENTS  .................................................................. ii
1 PANEL DESCRIPTION  ........................................................... 1–5

■ Front panel ............................................................................... 1

■ Function LED  ........................................................................... 2

■ Programmable function keys .................................................... 3

■ Turning power ON .................................................................... 6

■ Channel selection ..................................................................... 6

■ Receiving and transmitting ....................................................... 7

D Transmitting notes ................................................................. 7
D Scrambler function  ................................................................ 8
D User set mode ....................................................................... 8

■ Rear panel and connection  ...................................................... 9

■ Supplied Accessories  ............................................................. 10

■ Mounting the transceiver ......................................................... 11

■ Optional UT-108 installation  ................................................... 11

■ Optional UT-109/UT-110 installation  ...................................... 12

■ Optional OPC-617 installation................................................. 12

■ Antenna................................................................................... 13

■ Fuse replacement  .................................................................. 13

■ Cleaning ................................................................................. 13

IC-F111S/F121S_F211S/F221S   02.9.6 0:58 PM  Page ii (1,1)