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Icom has a lot of data and "cloning" (programming cables) and the official part numbers all start with an "OPC-" or "OPC-i" prefix. Some sellers market them without the hyphen, the "i" or both.
The radio shop that your author helps out at a couple of days a week has a few Icom factory cables that are serial port (DE-9 based) and a couple of factory USB cables but they tend to use aftermarket FTDI USB cables due to past USB driver issues. Icom ships a USB driver CD with every factory cable and the shop has had driver clashes between the Windows drivers and the Icom drivers.
- The OPC-478UC is a 3-conductor cable that has a 3.5 mm (1/8 inch) TRS (Tip-Ring-Shank) "stereo" plug on the radio end. The original OPC-478 had a DE-9 connector on the computer end, there are now USB versions.
- The OPC-i966 is a 3-conductor cable that connects to a
9-pin acccessory connector on the side of a handheld. One radio that uses this cable is the IC-F4161 series.
- The OPC-i1862 and OPC-2338 are 3-conductor cables that connect to a
14-pin acccessory connector the side of a handheld. At
one point the OPC-1862 number had been discontinued and replaced by the OPC-2338.
- The ICOM OPC1122 and the OPC2344 Programming Cables are the standard mobile programming cable. They have an 8-pin RJ-45 (Ethernet style) modular connector on the radio end. The OPC1122 has been discontinued and some sellers still have stock or are selling the OPC2344 cable under both numbers.
- The ICOM OPC2363 Programming Cable is a USB to mobile cable that has a round 10-pin connector on the radio end (anybody have a photo of the radio end?) At the time of this writing it is used with the F5400, F6400, F7510, F7520 and F7540 series commercial radios but may be used in other markets in the future.
- Your page maintainer purchases all of his USB cables from Mark Dunkle at www.bluemax49ers.com. (Off-site pointer - opens in a new browser tab)
He learned from the experiences mentioned above at the shop. Mark's FTDI based USB cables just plain work and work with the Windows drivers… You can buy through his web page and avoid the eBay or Amazon markup. No, Mark is NOT paying him for providing this pointer.
- Some Thoughts on Radio Programming Computers and Laptops by Mike Morris WA6ILQ
If you do a lot of radio programming you might want to consider dedicating a laptop to radio programming.
This article describes what the author uses and why… It is an opinion piece… His needs may align with your needs or may not. What works for him may or may not work for you…
He prefers the CF‑30-31 series Toughbooks because they are cheap, Mil-Spec rugged, configurable, repairable and have a 9-pin hardware COM port that always works.
Modifications and Articles
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UX-49 PLL Lock Fix (The UHF IC-900
module) By Kevin Custer W3KKC
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CTCSS Tone Chart By Kevin Custer W3KKC
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IC-2A/AT/E Frequency Range Mod
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A Modification for the IC-02, 03, 04 transmit
audio (will probably be appropriate for the H16, U16 as well)
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IC-02, 03, 04, H16, U16 Tone Squelch
encode/decode board information Donated by Jeff Kincaid W6JK
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Fixing the random microphonic crackle
in the IC-2100 2m mobile
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Interfacing an IC-28, 38 or 48
mobile for remote base service Donated by Lee N3APP
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Some modification info for the IC-37 family.
Collected by Mike Morris WA6ILQ
The IC-37 is the 220 MHz radio. Some of the info will apply to the IC-27 (2m) and IC-47 (440 MHz) versions.
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Interfacing the IC-RPxx20 Repeater
to a Link-Comm RLC Controller 58 kB PDF file
This writeup is from Link Communications and is frequency independent. Information donated
by Eric Struble.
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Interfacing the IC-RP1520
Repeater to a Computer Automation Technology Inc. Controller 105 kB PDF file
While the title specifies the IC-RP1520 the information is frequency independent and
should be applicable to any Icom repeater that has the 8-pin DIN female accessory
connector on the rear panel. And the interfacing of the the Scom and the Arcom controllers is very similar to the CAT controller family.
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A repeater mod for the F121,
F121S, F221, and F221S commercial radios 77 kB PDF file. Donated by Sean
Smith VE6SAR.
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General Icom Commercial Equipment Information
Donated by Thomas Reynolds KD7SGM.
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MDC-1200 Compatible Models
565 kB PDF file
MDC is an audio FSK data burst based system that is used to identify mobile radios in the land mobile radio world.
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Solving antenna connector problems on Icom
handhelds: IC2/3/4AT, IC02/03/04AT series Donated by Mike Morris WA6ILQ
(his first ever article, was published in a local club newsletter around 1983-1984, back when
anyone could walk into or mail order from the Tektronix Company Store in Portland Oregon).
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Increasing the CTCSS level
on the IC-706MKIIG transceiver By David Branson KCØLL.
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Expanded Frequency Coverage on TX and RX for the Icom IC-W32AE
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UX-series Module Interfacing
Design Guide 600 kB PDF file By Joseph Haas KEØFF
A comprehensive guide to the interface signals and protocols used in the IC-900
and IC-901 multi-band transceivers. This is still a work-in-progress and will
be updated as time permits, culminating in a full mobile radio control unit.
Additional info on the ACC FC-900 interface for the IC-900/901 can be found
on the ACC Index page.
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OPC-478 Programming cable CAD files (ZIP) Supplied
By James Craswell WØVNE
These files are the CAD files for a program cable used with ICOM products such
as the IC-F4S series of UHF Radios. It also works with a wide variety of other
radios. You need to download the CIRCAD program from http://www.circad.net/.
The free demo version should allow you to print out the schematic and even
print out a template to make a PCB. Or you can hand wire a board using Vector
board. This is a clone of the OPC-478 cable. Hams who like Circad can get the
full version, which allows you to make GERBER files to mass produce PCBS for
$250 (1/4 the price of the retail version). You can email me at w0vne /at/ y
ahoo /dot/ com for the details of that but remember: you won't need the full
version to make up this board.
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Manuals and Brochures
The IC-F series, IC-U series, and IC-V series radios are commercial Land Mobile Radios (LMR).
The M-series are marine radios, the A-series are aircraft (AM modulation), the FR and UR-series are LMR repeaters and options.
Mobiles and Handhelds
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Icom Manuals Download
Page Icom's own manual page (offsite link)
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IC-2AE (European) Instruction Manual less cover 717 kB PDF file
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IC-2A / AT / E
Instruction Manual 3.2 MB PDF file
Includes ratings info for a bunch of battery packs, as well as descriptions of
most of the IC-2A accessories.
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IC-2AT / E complete
schematic 95 kB PDF file (European model, with touchtone pad and tone burst)
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IC-2A / AT / E
Handheld Service Manual 5.2 MB PDF file
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IC-µ2A / AT / E
Handheld Service Manual 3.1 MB PDF file
Note this is the "Micro" 2A / AT / E model.
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IC-3A / AT 220 MHz Handheld Instruction
Manual 2.9 MB PDF file
Includes specifications on BP2/3/4/5 battery packs.
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IC-3A / AT 220 MHz Schematic and PCB
Layout 1.4 MB PDF file
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Anybody have the IC3AT service manual?
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IC-3SAT 220 MHz Handheld Instruction
Manual 3.3 MB PDF file
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IC-3SAT 220 MHz Handheld Instruction
Manual 3.9 MB version (slightly better detail)
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IC-3SAT 220 MHz Service Manual 2.8 MB PDF file
Includes UT-49, UT-50, UT-51 tone/DTMF options.
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IC-4A / AT / E
440 MHz Handheld Instruction Manual 601 kB PDF file
Includes info for BP2/3/4/5 battery packs.
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Anybody have the service manual for the IC4AT ?
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IC-µ4A / AT / E
440 MHz Handheld Service Manual 3.1 MB PDF file
Note this is the "Micro" 4A / AT / E model. Includes info on the UT-37 option.
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IC-02A / AT Handheld Instruction
Manual 1.7 MB PDF file
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IC-02A / AT / E
2m Handheld Service Manual 2 MB PDF file
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IC-03AT 440 MHz Handheld Instruction
Manual 3.9 MB PDF file
Also relevant to the 02AT and 04AT.
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IC-03AT 220 MHz Service Manual 2.5 MB PDF file
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IC-04A / AT / E
440 MHz Handheld Instruction Manual 1.6 MB PDF file
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IC-04A / AT / E
440 MHz Handheld Service Manual 2.4 MB PDF file
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IC-A2 Maintenance Manual
1.8 MB PDF file
Note that this is an aircraft band handheld transceiver (AM modulation).
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IC-4GA / GAT / GE
440 MHz Service Manual 2.4 MB PDF file
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IC-12GAT / GE
1200 MHz Handheld Service Manual 2 MB PDF file
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IC-22U / IC-24E/G
Mobile Instruction Manual 1.0 MB PDF file
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IC-24AT / IC-24ET dual band
Handheld Instruction Manual 3.6 MB PDF file
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IC-32A / AT / E
dual band Handheld Service Manual 2.8 MB PDF file
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IC-37A 220 MHz Instruction
Manual 2.6 MB PDF file radio photo
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IC-47A/E UHF Mobile Service
Manual 2.9 MB PDF file
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IC-125 VHF Radio Telephone Instruction
Manual 1.2 MB PDF file
A 5-channel diode-programmable transceiver that supposedly can be converted to operate
in the amateur band by replacing two PLL crystals. Donated by Greg Beat.
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IC-125/T/TM VHF Land Mobile Radio Telephone
Maintenance Manual 6.5 MB PDF file
The full service manual for the above radio. Donated by Greg Beat.
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IC-208H two band Mobile Instruction
Manual 3.3 MB PDF file
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IC-208H two band Mobile Service
Manual 4.3 MB PDF file
The service manual has a mis-print. On page 5-2 the resistor in the jig cable should
be sized at 22 K ohm, not 2.2 K ohm. Even the Icom Knowledge Base Article on the
topic has it wrong. You can download a fixed
copy of the above file here as a 4 MB PDF file.
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IC-3200A/E dual band Mobile Service
Manual 3.8 MB PDF file
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IC-3220A/E/H dual band Mobile
Service Manual 2.7 MB PDF file
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IC-435 UHF mobile info package (sales flyer,
schematic, programming) 2.1 MB ZIP file
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IC-706 Service Manual
4.4 MB PDF file
Includes options UT-102 and AT-180. This is the HF radio that also does 6 meters. When
coupled to a high-end repeater controller that understands what a HF remote base is
(like an NHRC-10, an Arcom RC210 or similar capability controller) this makes a dandy
HF remote base. Just watch the pre-emphasis and de-emphasis! And note that the Icom
command language in the 706 microprocessor has a firmware bug: The 706 series will not
let you set the VHF / UHF CTCSS encoder frequency remotely. There is a
workaround for this that the NHRC-10 controllers have as a built-in feature: pre-program
32 memory channels with the 32 CTCSS encode tones, then to change frequency recall
the appropriate tone-coded memory to the dial, then program the dial with your desired
target frequency.
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IC-706MKII Service
Manual 3.5 MB PDF file
This is the later 706 HF radio that also does 6 meters and 2 meters.
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IC-706MKIIG User Manual
2.1 MB PDF file
This is the most recent 706 HF radio that also does 6m, 2m and 440 MHz.
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IC-706MKIIG Service Manual
12.7 MB PDF file
This is the most recent 706 HF radio that also does 6m, 2m and 440 MHz.
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Don't overlook the IC-706MKIIG CTCSS deviation mod above - stock the radios had low CTCSS
deviation, KCØLL fixed it.
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IC-756 Service Manual 6.5 MB PDF file
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IC-900A/E Mobile Service
Manual 9.8 MB PDF file
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IC-901A/E Mobile Service
Manual 9.7 MB PDF file
Includes options UT-40, UT-48, EX-766.
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IC-900-901A/E Data
Structure 82 kB PDF file
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IC-2100H 2m Mobile Instruction
Manual 790 kB PDF file
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IC-2100H 2m Mobile Service
Manual 3.5 MB PDF file
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IC-2100H 2m mobile schematic package
2.4 MB PDF file
Popular with the Packet / APRS community. Also see the IC-2100
modification file above.
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IC-7000 Service Manual 11 MB PDF file
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IC-F110S, 111S, 121S and IC-F210S,
211S and IC-F221S Service Manual 5.0 MB PDF file
This contains two manuals: the first is the 8-channel 136-174 MHz VHF transceiver
(pages 1-37) and the second is the 8-channel UHF transceiver (pages 38-74). The UHF
model comes in two splits: 400-430 MHz and 440-490 MHz.
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IC-F111, 121 (VHF) and IC-F211,
221 (UHF) Instruction Manual 759 kB PDF file from Sean Smith VE6SAR
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IC-F111S, 121S (VHF) and IC-F211S,
221S (UHF) Instruction Manual 758 kB PDF file from Sean Smith VE6SAR
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IC-H16 and IC-U16 Owner's Manual
3.8 MB PDF file The owner's manual for the commercial version of the
IC-02 and IC-04 (no programming info).
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IC-H16, IC-U2, and IC-U16
Instruction Manual 2.6 MB PDF file Seems to be a better scan of
a different version of the above manual.
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IC-H16, IC-U16, IC-U2, IC-V100, IC-U400,
IC-V200, IC-U200 and the IC-V201 Programming information 1.8 MB PDF file
Includes EX-494 programming keypad.
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IC-H16 VHF Handheld Service Manual
2.6 MB PDF file
Includes schematics for CM7 and CM8 battery packs.
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IC-H16T VHF Handheld Service Manual
3.8 MB PDF file
This is the later "T" version
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IC-H16 MK-II VHF Handheld Service
Manual 10.1 MB PDF file
This is the later "Mark 2" version that was never imported into the USA. It's a totally
different radio than the H16.
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IC-PS30 13.8V 25A Power Supply Instruction
Manual 332 kB PDF file
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IC-R1 Wideband Handheld Receiver Instruction Manual
6 MB PDF file
Includes info on BP-81/82/83/84/85/90 battery packs.
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IC-R10 Communications Receiver Instruction
Manual 1.2 MB PDF file
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IC-R100 Communications Receiver Instruction
Manual 2.2 MB PDF file
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IC-U16 UHF Handheld Service Manual
2.4 MB PDF file
Includes schematics for CM7 and CM8 battery packs.
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IC-W2A / W2E Handheld
Service Manual 1.8 MB PDF file
Includes option UT-63.
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IC-W2A / W2E Handheld schematics
only 514 kB PDF file
To expand the receiver frequency range of the IC-W2A to 118.00-170.00, 322.00-513.00,
and 800.000-970.000, do the following: Hold down the Light, B, and # keys while turning
the power on. That's actually a four button sequence, since the power on function is
controlled by a keypad button.
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IC-W21AT / ET
Handheld Service Manual 4.2 MB PDF file
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IC-W31AT / ET
Handheld Service Manual 2 MB PDF file
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IC-W32AT / ET
Handheld Instruction Manual 735 kB PDF file
Includes info on BP170/171/172/173/180 battery packs.
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IC-W32AT / ET
Handheld Service Manual 10.8 MB PDF file
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Batteries and Chargers
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BC-35 Desktop Battery Charger Manual
with schematic 763 kB PDF file
For BP2/3/4/5/7/8 battery packs.
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BC-35 Manual, a little
over half the size, no schematic 409 kB PDF file
For BP/2/3/4/5/7/8 battery packs.
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BC-35 Schematic Diagram Vertically
oriented for printing 121 kB PDF file
The BC-35 is the drop-in rapid charger for the ICM-5, IC-M11, IC-M16, IC-U16, IC-2GAT,
IC-02AT, IC-2AT, IC-32AT, IC-4GAT, IC-04GAT, IC-04AT, IC-4AT, IC-12GAT, IC-03AT,
IC-3AT, IC-IC-H2, IC-H6, IC-H12, IC-U12 plus the Radio Shack HTX202 and HTX404.
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Fixing a design bug in the BC-35 charger by
Mike Morris WA6ILQ
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Data sheet on the rechargeable battery packs
for the IC-2/3/4 and IC-02/03/04 series handhelds 64 kB PDF file
This data sheet covers the "amateur grade" BP-2, BP-3, BP-4, BP-5, BP-5A, BP-7, BP-8
and BP-70. Except for the BP-4 they are recharged in the BC-35 charger mentioned above
(the BP-4 is a holder for ten AA penlight cells).
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Data sheet on the rechargeable battery packs
for the IC-H16, IC-U16 125 kB PDF file
This data sheet covers the "commercial grade" CM-5, CM-7, CM-8, CM-12, CM-96 series.
The trailing B (as in CM-7B) indicates black plastic, a trailing G (as in CM-7G)
indicated gray. No trailing letter (as in CM-7) indicated dark gray. All except the
CM-12 series are recharged in the BC-35 charger mentioned above (the CM-12 is a
holder for ten AA penlight cells).
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CM-7 battery pack schematic (also
applicable to the BP-7)
This is the high power ("12 volt") pack that has an interesting design - since the
BC-35 is effectively an 11v charger designed to charge 9.6v batteries this battery
pack uses an internal relay to switch two 6v cell groups in parallel for charging
and in series (12v) for operation.
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CM-8 battery pack schematic (also
applicable to the BP-8)
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Amateur Radio Repeaters
LMR Repeaters
The FR3000 (VHF) / FR4000 (UHF) are the first generation factory repeaters.
The FR5000 (VHF) / FR6000 (UHF) are the second generation.
The FR5300 (VHF) / FR6300 (UHF) are the third generation.
You will see a x100 or a x200 model mentioned in some manuals. Both were an export version of the x000 module.
The repeaters are programmed with Icom's standard 8-pin RJ-45 cable, their model
OPC-1122U (old, discontinued in October 2022) or the
OPC-2344 (current). Both will work, both were a two-piece cable, USB-A to USB-mini and a short cable that contained a ciruit board in a pod with a female USB-mini connector in the pod and a short RJ-45 male cable (see the photos). Both the old and the new official Icom cables are expensive and need Icom's USB drivers. Save a few dollars, get a FTDI USB OPC-1122 cable from Mark Dunkle KJ6ZWL at BlueMax49ers (off-site pointer, opens in a new browser tab). His cables just plain work and use the stock Windows drivers.
The FR5000 / 6000 units have an option slot in the back and one of the options is the UC-FR-5000 digital trunking module for the Icom IDAS system (their flavor of NXDN). That module has three RJ-45 jacks on the back - two for the trunking buss (the jacks are paralleled) and a third for an ethernet connection. The jacks are not labeled, the ethernet jack is the one towards the center of the module.
An IT tech at a customer site plugged an ethernet cable into the front panel microphone jack instead into the rear ethernet jack.
The ethernet jack is protected from the 48 volts of Power-Over-Ethernet. The microphone jack is not!! Both the RF board and the
control board were thoroughly toasted and the repeater was beyond economical repair. The customer had to buy a new repeater module
and added a label to all of his units…
The FR5000 / 6000 units are "full duty cycle" at from 1 to 25 watts output and will do 45 watts intermittent duty.
They offer both analog wide (20/25 KHz / 16K0F3E) and narrow (12.5 KHz / 11K0F3E) FM modes AND also support and include
the NXDN Digital (6.25 KHz / 8K10F1D and E and 4K00F1D and 4K00F3E) format right out of box. These repeaters also support "mixed-mode" operation.
The third generation FRx300 models are very similar to the FRx000 models however with two major differences:
1) The FR5300 and FR-6300 units have a GPS Disciplined Oscillator internally that locks the units absolutely on channel. There is female SMA on the back for a GPS antenna.
2) The FR6300 accessory connector pinout is identical except that pin 20 does nothing - which is a real problem as that
pin is used for TX external data (like paging data) or as a flat audio input.
You are NOT going to be able to use a FR5300 or FR6300 as a MMDVM transmitter.
The FR5x00 / 6x00 units are available in two packages: the IC-FR-5000 / 5300 / 6000 / 6300 rack mount package which comes with one radio module and an open slot for a UR-5000 / 5300 / 6000 / 6300 "channel expansion module" (a second repeater module). If the customer did not need a need a second repeater module then a power supply or a flat pack duplexer (or both) could be mounted in the space. The front panel on the rack mount package has a local speaker and there are two cables that plug into the microphone jack on each of the two modules… you could have two VHF modules, two UHF modules or one of each. A short tap on the blue power button switches between repeater modules.
There was an third package (now discontinued) - the "CY" package that held one module, a power supply and a flat pack duplexer. That housing had a fan, and there was a "CY mod" data sheet that documented the process to add a twisted pair fan harness to the UR module. This connected the fan to the antenna relay connections inside the module.
FR3000 / FR4000:
CY5000 / CY6000:
FR5000 / FR5300 / FR6000 / FR6300:
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The FR5000 / 5300 covers 136-174 MHz in one frequency range.
The UHF FR6000 / 6300 are made in multiple ranges.
The range information appears on one of the screens of the programming software, and is encoded as
the last digit of the FCC ID number – it will be a 1 for low range and a 2 for high range. The first two digits
of the serial number also has that information:
FR6000:
400-470 MHz: 01, 14, 41, 63
450-512 MHz: 11, 19, 51, 67
FR6300:
350-440 MHz: 22 or 62
400-470 MHz: 11, 12, 13, 17, 18, 51, 52, 53, 57 or 58
450-512 MHz: 31 or 71
450-520 MHz: 32, 34, 72 or 74
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FR-5000 / 5300 / 6000 / 6300 Accessory Connector Pinout 378 KB PDF file
This is the female DB-25 connector on the back of the module.
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A brochure called an "FFB" - "Feature, Function, Benefit" by the marketing people 125 KB PDF
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FR5000 / FR6000 Product Brochure (dated 2018) 1.05 MB PDF file
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FR-5000 / FR-6000 Instruction Manual 570 KB PDF file
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FR-5000 / FR-5100 Service Manual 25.5 MB PDF file
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2008 FR-5000 / FR-5100 Service Manual 3.61 MB PDF file
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FR-5000 Service Manual Addendums 8.34 MB PDF file
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FR-5000 / FR-6000 Configuration Guide 414 kB PDF file
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FR-6000 / FR-6100 Service Manual 4.325 MB PDF file
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Back to the top of the page
Back to Home
This page originally posted on 14-Oct-2004
Text, artistic layout and hand-coded HTML © Copyright 2004 and date of last
update by Mike Morris WA6ILQ
This web page, this web site, the information presented in and on its pages and
in these modifications and conversions is © Copyrighted 1995 and (date of
last update) by Kevin Custer W3KKC and multiple originating authors. All Rights
Reserved, including that of paper and web publication elsewhere.
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Equipment
