Equipment information:

Icom IC-M421 Transceiver
Model: IC-M421
Date: 2004
Category: Radio, Communication
Group: Transceiver
                                    • Built-in Class D DSC
• Individual, Group & All Ships Call
• Position Request & Position Report with External GPS
Receiver Connection
• Waterproof Construction, Including Microphone (1m depth
for 30 minutes*)
• Large Full Dot-matrix LCD with
10 Character Scrolling Channel Name
• Simple Operation with Large Buttons
• Simple Tag Scanning Function
• Loud Speaker Audio

Built-in Class D DSC
The IC-M421 has a built-in Ch 70 (DSC channel) receiver,
which monitors Ch 70 activity, even while you are receiving
another channel. In an emergency situation, an automated
distress call can be sent at the touch of a button.
Digital selective calling features
The DSC uses a unique ID (MMSI code) similar to a telephone
number. So you can make a contact with the intended ID
station or group directly or with all ships in the area.
When connected to an external GPS receiver, the position
request and position report functions allow you to exchange
the ship's position information. The polling (request/reply)
function checks whether a specific ship is in the
communication range. A total of 100 address IDs can be
programmed with 10-character address name and up to 40
received DSC messages (20 distress and 20 other calls) are
Large LCD with Dot-matrix Characters
The IC-M421 has a full dot-matrix display with up to
168-character capability that allows you to see a host of
information such as channel number, channel name, position
and DSC data etc. With the backlit display, large buttons
and knobs, the IC-M421 is easy to operate, even at night.
Waterproof Protection
The IC-M421, including the microphone, has waterproof
protection, equivalent to JIS waterproof specification Grade 7*.
* Equivalent to IPX7 of the corresponding international
standard IEC 60529 (2001). 1m depth for 30 minutes; except
Loud Speaker Audio
The speaker's high sound pressure level delivers loud and
clear reception, even over background noise. The microphone
is tuned to pick up voice, while reducing ambient noise.

These manuals are available for the above equipment:

Icom -- IC-M421 -- Datasheet
File name: Icom-7497-Manual-Page-1-Picture
Manual Type: Datasheet
Pages: 2
Size: 932.88 Kbytes (955271 Bytes)
Language: english
Manual-ID/Number: 04YS0130
Date: 2004
Quality: Electronic document, no scan, very well readable.
Upload date:
MD5: 1896f9ddda1e444e68de0f6c73410a3b
ed2kID: 098318d359feed994f7ead4e77c7904e
Downloads: 38 since 09 January 2016
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