Equipment information:

Icom iC-r20 Receiver
Manufacturer:
Icom
Model: iC-r20
Date: 2004
Category: Radio, Communication
Group: Receiver
Description: COMMUNICATIONS RECEIVER
Information:
                                    FEATURES
O Covers 0.150-3304.999 MHz* wide frequency range
‘Some frequency bands are inhibited according to version
O External power supply operation O 1250 memory channels*
with 26 banks available
*200 auto write and 50 scan edge channels are included.
O Built-in bar-antenna O Dualwatch operation

GENERAL
• Mode : FM, WFM, AM, SSB, CW
• No. of memory channel : 1250 channel
(incl. scan edge and auto
memory write ch.)
• Frequency stability : ±6 ppm max.
• Tuning steps : 0.01, 0.1, 1, 5, 6.25, 8.33*,
9*, 10, 12.5, 15, 20, 25,
30, 50 and 100 kHz
*selectable depending on
the operating frequency
band.
• Antenna Impedance : 50 Ω
• Power supply requirement : 3 × AA(R6) alkaline cells,
BP-206 or external power
supply (BC-149/A/D, CP-18)
• Polarity : Negative ground
• Current drain (at 3.7 V, backlight is OFF) :
Rated audio 150 mA typical
Standby 100 mA typical
Power saved 35 mA typical
(Power save ratio is 1 : 4)
• Usable temperature range : –10°C to +60°C
( –14°F to +140°F)
• Dimensions : 60(W) × 142(H) × 34.8(D) mm;
(projections not included) 23⁄8 (W) × 519⁄32 (H) × 13⁄8(D) in
• Weight (with antenna and BP-206) : Approx. 320 (g);
1119⁄32 (oz)
• External SP connector : 3-conductor 3.5(d) mm
(1⁄8”) / 8Ω
• Audio output power (at 3.7 V) : 100 mW typical at 10 %
distortion with an 8 Ω load
• BP-206 charging time : Approx. 8 hours
• Charging current : 400 mA typical

These manuals are available for the above equipment:

Icom -- iC-r20 -- Service Manual
File name: Icom-3225-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 70
Size: 6.57 Mbytes (6891290 Bytes)
Language: english
Revision:
Manual-ID/Number: S-14104MZ-C1
Date: 2004
Quality: Electronic document, no scan, very well readable.
Upload date:
MD5: e617913c217292066ae369f39f0dac5f
ed2kID: 3fc50d2811cd0b73f61ec966e10e0554
Downloads: 578 since 06 February 2012
Information:
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY INSTRUCTIONS
SECTION 4 CIRCUIT DESCRIPTION
4-1 RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
4-2 PLL CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 7
4-3 OTHER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 10
4-4 POWER SUPPLY CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 11
4-5 PORT ALLOCATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 12
4-6 BC-156 CIRCUIT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 14
SECTION 5 ADJUSTMENT PROCEDURES
5-1 PREPARATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
5-2 SOFTWARE ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 3
SECTION 6 PARTS LIST
SECTION 7 MECHANICAL PARTS AND DISASSEMBLY
SECTION 8 SEMI-CONDUCTOR INFORMATION
SECTION 9 BOARD LAYOUTS
9-1 RF UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
9-2 LOGIC UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 3
9-3 REC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 5
9-4 1STAVCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 7
9-5 1STBVCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 7
9-6 2NDCVCO BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 7
9-7 2NDDVCO BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 7
9-8 DOWNCONV BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 7
SECTION 10 BLOCK DIAGRAM
SECTION 11 VOLTAGE DIAGRAM
11-1 RF UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 1
11-2 LOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 3
11-3 REC UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 4
11-4 1STAVCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 5
11-5 1STBVCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 5
11-6 2NDCVCO BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 6
11-7 2NDDVCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 6
11-8 DOWNCONV BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 7
SECTION 12 BC-156 BATTERY CHARGER UNIT
12-1 DISASSEMBLY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 1
12-2 BC-156 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 1
12-3 BC-156 VOLTAGE DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 2
12-4 BC-156 BOARD LAYOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 3
Icom-3225-Manual-Page-1-Picture
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Icom -- iC-r20 -- User Manual
File name: Icom-7504-Manual-Page-1-Picture
Manual Type: User Manual
Pages: 88
Size: 2.56 Mbytes (2679416 Bytes)
Language: english
Revision:
Manual-ID/Number: A-6353H-1 EX
Date: 2004
Quality: Electronic document, no scan, very well readable.
Upload date:
MD5: c2a57b6effe1843af9a3dd9ee330938c
ed2kID: a09496b39d2eab3e6a269150bfec034b
Downloads: 52 since 09 January 2016
Information:
FOREWORD ..................................
IMPORTANT ..................................
EXPLICIT DEFINITIONS..............
PRECAUTION ................................
................ii
SUPPLIED ACCESSORIES ........
................iii
OPERATING THEORY ................
................iii
OPERATING NOTES ...................
................iii
TABLE OF CONTENTS................
...............iv
QUICK REFERENCE GUIDE .....
............I-VI
■ Preparation............................
............I
1 PANEL DESCRIPTION...........
............1-7
■ Front, top and side panels ...
................1
■ Function display....................
................6
2 BATTERY CHARGING ...........
..........8-10
■ Battery installation................
................8
■ Caution...................................
................9
■ Battery charging....................
................9
3 FREQUENCY AND CHANNELSETTING
........11-16
■ Mode selection.......................
..............11
■ Operating band selection.....
..............12
■ Setting a tuning step.............
..............14
■ Setting a frequency...............
..............14
■ Selecting a memory channel
..............10
■ Receive mode selection......
..............16
■ Lock function.........................
..............16
4 BASIC OPERATION ...............
........17-23
■ Receiving................................
..............17
■ Setting audio volume............
..............17
■ Squelch level setting.............
..............18
■ Monitor function.....................
..............18
■ Attenuator function...............
..............19
■ RF gain...................................................19
■ Duplex operation...................................20
■ AFC function...........................................21
■ NB/ANL functions..................................21
■ Band scope.............................................22
■ [DIAL] function assignment...................23
DUALWATCH OPERATION ............24-25
■ Setting audio volume............................24
■ Squelch level setting..............................24
■ Main band selection...............................25
■ Band exchange......................................25
MEMORY CHANNELS......................26-33
■ General description...............................26
■ Memory channel programming............26
■ Memory bank setting............................27
■ Memory bank selection.........................28
■ Programming memory/bank name.....29
■ Selecting memory/bank name indication.....30
■ Copying memory contents....................31
■ Memory clearing....................................32
■ Erasing/transferring bank contents.....33
SCAN OPERATION ..........................34-41
■ Scan types..............................................34
■ Full/band/programmed scan................35
■ Scan edges programming....................36
■ Memory/bank/all bank scan.................37
■ Auto-memory write scan.......................38
■ Skip channel/frequency setting............39
■ Scan resume condition.........................40
PRIORITY WATCH ............................42-44
■ Priority watch types...............................42
■ Priority watch operation........................43
9 COMFORTABLE RECEIVING..........45-48
■ Tone/DTCS squelch operation.............45
■ Tone squelch frequency/DTCS code
setting...........................................................46
■ DTCS polarity setting............................47
■ Tone scan...............................................48
10 SET MODE .........................................49-59
■ General...................................................49
■ Set mode items......................................50
11 OTHER FUNCTIONS........................60-67
■ Antenna selection..................................60
■ Weather channel operation.................61
■ Data cloning...........................................62
■ Auto power-off function.........................63
■ IC recorder..............................................64
■ Partial reset............................................67
■ All reset..................................................68
12 CONTROL COMMAND ....................68-69
■ General...................................................68
■ Data format.............................................68
■ Command table.....................................68
13 FREQUENCY TABLE .......................70-61
■ TV channels............................................70
■ VHF marine channels...........................73
■ Weather channels..................................73
■ Other communications in the USA.....74
■ Other communications— other countries
.....76
......78
.....78
......79
......80
Icom-7504-Manual-Page-1-Picture
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Icom -- iC-r20 -- User Manual
File name: Icom-7515-Manual-Page-1-Picture
Manual Type: User Manual
Pages: 108
Size: 2.43 Mbytes (2545752 Bytes)
Language: english
Revision:
Manual-ID/Number: A-6353H-1 EX-
Date: 2004
Quality: Scanned document, all readable.
Upload date:
MD5: 0d546661be3582fc9fc104de35d5d767
ed2kID: 7f8d549aba908b6ffebea47bd60743cd
Downloads: 51 since 09 January 2016
Information:
Icom-7515-Manual-Page-1-Picture
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