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S-15110XZ-C1
September 2014
PMR446 TRANSCEIVER
This service manual describes the latest technical informa-
tion for the IC-F29SR PMR446 TRANSCEIVERS, at the time of pub-
lication.
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than the specifi ed voltage. This
will ruin the transceiver.
DO NOT expose the transceiver to rain, snow or liquids.
DO NOT reverse the polarities of the power supply when con-
necting the transceiver.
DO NOT apply an RF signal of more than 20 dBm (100 mW) to the
antenna connector. This could damage the transceiver’s front-end.
To upgrade quality, any electrical or mechanical parts
and internal circuits are subject to change without notice
or obligation.
Be sure to include the following four points when ordering
replacement parts:
1. 10-digit Icom part number
2. Component name
3. Equipment model name and unit name
4. Quantity required
<ORDER EXAMPLE>
1110003491 S.IC TA31136FNG IC-F29SR MAIN UNIT 5 pieces
8820001210 Screw 2438 screw IC-F29SR Top cover 10 pieces
Addresses are provided on the inside back cover for your
convenience.
ORDERING PARTS
1. Make sure that the problem is internal before dis-assem-
bling the transceiver.
2. DO NOT open the transceiver until the transceiver is dis-
connected from its power source.
3. DO NOT force any of the variable components. Turn them
slowly and smoothly.
4. DO NOT short any circuits or electronic parts. An insulated
tuning tool MUST be used for all adjustments.
5. DO NOT keep power ON for a long time when the trans-
ceiver is defective.
6. DO NOT transmit power into a Standard Signal Generator
or a Sweep Generator, otherwise the RF power may dam-
age them.
7. ALWAYS connect a 30 dB to 40 dB attenuator between the
transceiver and a Deviation Meter or Spectrum Analyzer,
when using such test equipment.
8. READ the instructions of the test equipment thoroughly
before connecting it to the transceiver.
REPAIR NOTES
INTRODUCTION
CAUTION
Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan, the United States, the
United Kingdom, Germany, France, Spain, Russia and/or other countries.
MODEL VERSION VERSION
NUMBER
FREQUENCY RANGE
(MHz)
IC-F29SR EUR-01 #61 446.00625–446.09375
UK-01 #62
TABLE OF CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY INSTRUCTION
SECTION 4 CIRCUIT DESCRIPITON
4-1 RECEIVE CIRCUITS ........................................................................................ 4-1
4-2 TRANSMIT CIRCUITS ...................................................................................... 4-2
4-3 FREQUENCY SYNTHESIZER CIRCUITS ....................................................... 4-2
4-4 VOLTAGE BLOCK DIAGRAM ........................................................................... 4-2
4-5 CPU PORT ALLOCATION ................................................................................ 4-3
SECTION 5 PARTS LIST
SECTION 6 MECHANICAL PARTS
SECTION 7 BOARD LAYOUTS
SECTION 8 BLOCK DIAGRAM
SECTION 9 VOLTAGE DIAGRAM
1-1
SECTION 1
.
SPECIFICATIONS
M GENERAL
• Frequency range: 446.00625–446.09375 MHz
• Number of conventional channels: 16
• Type of emission (Occupied band-width): 8K50F3E (12.5 kHz)
• Operating temperature range: –25˚C to +55˚C
• Power supply voltage: Specified Icom's battery packs only (7.5 V DC: negative ground)
• Current drain (Approximately): Receiving 80 mA (stand-by)
300 mA (maximum audio, internal speaker)
Transmitting 0.5 A (at 0.5 W ERP)
• Dimensions (Projections not included): With BP-279
52.2(W) × 186.1
(H) × 24.5(D) mm
• Weight: With BP-279 240 g
• Intermediate frequency: 1st
2nd
46.35 MHz
450 kHz
• Input impedance (Microphone): 2.2 k
• Output impedance (Speaker): 8
M TRANSMITTER
• Output power: 0.5 W ERP
• Modulation: Variable reactance frequency modulation
• Maximum frequency deviation: ±2.5 kHz
• Frequency stability: ±2.5 ppm
• Spurious emissions: 0.25 µW (1 GHz), 1.00 µW (1 GHz)
• Adjacent channel power: 60 dB
• Audio harmonic distortion: 1.0% typical at AF 1 kHz 60% deviation
• Residual modulation (With CCITT FILTER): 48 dB typical
• Limiting charact of modulator: 60–100% of maximum deviation
M RECEIVER
• Sensitivity: 26.5 dBµ V/m at 20 dB SINAD
• Intermodulation: 86.29 dBµ V/m
• Spurious response: 91.29 dBµ V/m
• Audio output power: 0.8 W typical at 5% distortion into the 12 internal speaker.
0.4 W typical at 5% distortion into an 8 external speaker.
• Adjacent channel selectivity: 81.29 dBµ V/m
• FM Hum and noise (With CCITT FILTER): 47 dB typical
• Squelch sensitivity (Threshold): 26.5 dBµ V/m
Specifications are measured in accordance with EN 300 296.
All stated specifications are subject to change without notice or obligation.
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