ii
FORWARD
Thank you for purchasing this Icom product. The IC-
FR3100/FR4100
VHF
/
UHF FM REPEATER
is designed
and built with Icom’s state of the art technology and
craftsmanship. With proper care, this product should
provide you years of trouble-free operation.
We want to take a couple of moments of your time to
thank you for making the IC-FR3100/FR4100 your re-
peater of choice, and hope you agree with Icom’s phi-
losophy of “technology first.” Many hours of research
and development went into the design of the IC-
FR3100/FR4100 series.
D
FEATURES
❍ 25 W continuous full duty cycle operation
This repeater looks as good as it performs. A rugged
heatsink, large cooling fans and a high performance
power module provide the repeater with a stable
25 W at full duty cycle operation.
❍
Automatic battery backup system
A built-in backup system supports automatic switch-
ing to an external power supply (13.2 V DC) if the
AC power supply fails.
❍ Multiple CTCSS & DTCS tone memories
with multiple memory channels
Up to 16 CTCSS/DTCS tones (TX/RX tones respec-
tively) can be programmed in a channel. This fea-
ture allows you to share a channel with multiple user
groups. You can also give priority/exclusive use to a
specified group simply by programming different
tones to another memory channel. Ideal for many
different applications.
❍ Built-in 2-Tone, 5-Tone, DTMF encoder &
decoder
Multiple signaling systems are equipped as stan-
dard. These systems are fully compatible with Icom
F-series radios.
❍ Telephone interconnect capability
❍ DTMF remote control capability
You can control the repeater from a remote location
over the air or over a phone line with DTMF.
❍ Other features
- PC programmable
- Wall or 19 inch rack mount (optional MB-77/MB-78)
- Optional Voice Scrambler Unit (UT-109 #01/UT-110
#01) for base operating mode
SUPPLIED ACCESSORIES
The following accessories are supplied with the IC-
FR3100/FR4100 series
q AC power cable (OPC-492) ……………………… 1
w Spare fuse (FGB 1 A)……………………………… 1
e Spare fuses (ATC 20)……………………………… 2
EXPLICIT DEFINITIONS
IMPORTANT ............................................................ i
EXPLICIT DEFINITIONS ......................................... i
PRECAUTION ......................................................... i
FORWARD .............................................................. ii
SUPPLIED ACCESSORIES ................................... ii
TABLE OF CONTENTS .......................................... ii
1 PANEL DESCRIPTION ......................... 1 – 4
■ Front panel .................................................... 1
■ Rear panel ..................................................... 2
2 INSTALLATION AND
CONNECTIONS .................................. 5–10
■ Unpacking ..................................................... 5
■ Selecting a location ....................................... 5
■ Antenna connection ....................................... 5
■ Duplexer ........................................................ 5
■ Grounding ...................................................... 5
■ Required connections .................................... 6
■ Advanced connections .................................. 7
■ Power ............................................................ 8
■ Mounting the repeater ................................... 8
3 OPTIONAL UNIT INSTALLATION ........... 11
■ Opening the repeater’s case ....................... 11
■ Voice scrambler unit installation .................. 11
4 OPERATION ............................................ 12
■ Turning power ON ....................................... 12
■ Receiving and transmitting .......................... 12
5 MAINTENANCE ................................ 13–14
■ Troubleshooting ........................................... 13
■ Fuse replacement ........................................ 14
6 SPECIFICATIONS AND OPTIONS ... 15–16
■ Specifications .............................................. 15
■ Options ........................................................ 16
7 ABOUT CE ........................................ 17–19
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