Micom 3T - User Manual

Questions and Answers

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robertojonesAug 20, 2025
How to eliminate engine noise from Micom Transceiver antenna?
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  Melissa RodriguezAug 21, 2025
  If your Micom Transceiver antenna picks up engine noise: * Determine if the noise is engine-related by observing the difference in reception when turning the engine ON and OFF. * Ensure ground leads are properly connected, and all power wires and ground leads are as short as possible. * Make sure the noise blanker (if installed) is enabled. * Consider installing noise reduction Kit TLN8845.
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dholtAug 23, 2025
How to fix a blank display on Micom 3T Transceiver?
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  matthew92Aug 23, 2025
  If your Micom Transceiver has a blank display, check the following: * Ensure the DC power cable is properly connected to both the radio and the battery. * Verify that a 7.5A fuse is installed in the fuse holder located on the green wire of the DC power cable.
L
Linda HillAug 26, 2025
What to do if Micom 3T Transceiver has weak receive signal?
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  melissamcmillanAug 26, 2025
  If your Micom Transceiver display is present but you're experiencing a weak or no receive signal or noise, check these items: * Examine the connection of the antenna to the antenna tuner and the antenna tuner to radio cables for any loose or broken connections. * Ensure the squelch is not in the OFF position. * Confirm the correct programming of the operating channel, including frequency and mode of operation.
K
katrina59Aug 28, 2025
What does OVER TMP mean on Micom Transceiver?
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  slucasAug 28, 2025
  If your Micom Transceiver displays 'OVER TMP', check the following: * Ensure there is no obstruction to free airflow around the radio. * Verify that the fan system is working and there are no obstructions to the fan. * Perform the built-in test using the MRC or RSS to obtain more information. If no further information is displayed, the problem is in the HIGH POWER board.
I
Ian GardnerAug 30, 2025
What does PW_LATCH mean on Micom Transceiver?
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  Katherine HarrisAug 30, 2025
  If your Micom Transceiver displays 'PW_LATCH', perform the built-in test using the MRC or RSS to obtain more information. Check the condition of the antenna and its connections, because this error is displayed when the VSWR exceeds 3.5:1. To check whether the problem is caused by high VSWR, transmit into a dummy load. If the problem persists, there is a problem in the HIGH POWER board.
P
patricia62Sep 2, 2025
What does NO CLOCK mean on Micom 3T Transceiver?
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  Ann EllisSep 2, 2025
  If your Micom Transceiver displays 'NO CLOCK', check the following: * Ensure that a 30A fuse is installed in the fuse holder located on the red wire of the power cable. * Check for good connection of the power cable to the power supply and to the radio. If connections and cable are OK, then the problem is in the LORD board.
G
George MurraySep 5, 2025
What does CU-LIMIT mean on Micom 3T Transceiver?
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  ybrownSep 5, 2025
  If your Micom Transceiver displays 'CU-LIMIT', check the following: * Ensure that the radio is programmed to TUNER OFF when your antenna system is not equipped with an ATU. * Check for short-circuit or other damage to the antenna feed coax. * Verify that the ATU is in good working condition.
R
Renee WarnerSep 7, 2025
What does NOT PROG mean on Micom 3T Transceiver?
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  Dawn AllenSep 7, 2025
  If your Micom Transceiver displays 'NOT PROG' (displayed when the radio DC power failed during programming): * The radio is not programmed and the baud rate is 1200 bps. * Program the radio parameters (using the MRC or RSS). This forces the radio to accept the downloaded parameters.
D
Deanna BrooksSep 9, 2025
What does SYN FAIL mean on Micom 3T Transceiver?
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  Kimberly HoffmanSep 9, 2025
  If your Micom Transceiver displays 'SYN FAIL', perform the built-in test using the MRC or RSS, to obtain more information.
A
Adrian TuckerSep 12, 2025
What does BATTERY FAIL ERROR 11 mean on Micom Transceiver?
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  Michael LeonardSep 12, 2025
  If your Micom Transceiver displays 'BATTERY FAIL ERROR 11', the radio has an internal battery that enables the memory to store the last channel information that was used before the radio was turned off. If this battery becomes weak, it will display this warning. When the battery is dead, all the channel information will be retained, but the radio will always use channel 1 when you turn the radio on.

Summary

Introduction to MICOM-3 HF-SSB Transceivers

MICOM-3 Model Overview

Brief descriptions of the MICOM-3F, MICOM-3T, and MICOM-3R models.

Manual Structure Overview

Explains the division of the manual into Part I (Operation & Installation) and Part II (Manual Programming).

MICOM-3 HF-SSB Radio Features and Capabilities

Key Radio Features

Lists core features like DSP, BITE, ALE, channel capacity, and MIL-STD compliance.

Transmitter and Receiver Performance

Details on output power, duty cycle, thermal protection, and receiver functions.

Frequency Sources and Options

Describes standard DTCXO and optional OCXO frequency sources for accuracy.

Familiarization with MICOM-3 Radio Components

MICOM-3 Front Panel Layout

Identifies controls and indicators on the front panels of MICOM-3F, MICOM-3T, and MICOM-3R.

Rear Panel Connectors

Details the functions of connectors located on the rear panel of all models.

LCD Display Indicators and Functions

Explains display organization, modes, and various operational indications.

General Operating Procedures for MICOM-3

Using the Keypad and Navigation

Explains how to use the keypad and navigation keys for menu selection and data entry.

Understanding Function and Special Keys

Details the usage of Function Keys (F1-F4), MORE key, and scroll keys.

Editing and Display Modes

Covers Alphanumeric Edit, Numeric Edit, and View modes for data input and display.

Basic Operation: Power, Transmit, and Receive

Powering the Radio On and Off

Step-by-step instructions for turning the radio on, including self-test.

Transmitting and Receiving Calls

Explains PTT operation, voice transmission, and how to receive calls.

Channel and Frequency Modes

Describes how to enter and use the Channel and Frequency modes.

Automatic Link Establishment (ALE) Operations

ALE Capabilities and Features

Details ALE functions like scanning, sounding, selective calling, and LQA.

ALE Addressing and Call Types

Explains addressing methods (individual, net, group, wildcard) and call types.

Using ALE Functions in Channel Mode

Describes how to use ALE calls and functions while operating in Channel mode.

Configuring ALE Parameters

ALE Mode Options Overview

Lists programmable ALE features such as NET, DIR, AMD, OPT, and AUTO.

Setting Net and Directory Parameters

Instructions for configuring net options and managing the ALE address directory.

ALE Options Configuration

Details on configuring options like PTOT, MLQA, QCAL, and AADR.

VP-116 Mini Voice Privacy Unit Operation

VP-116 Unit Connection and Parameters

Explains connecting the unit and specific parameters for privacy operation.

Using VP-116 in Different Modes

Describes how to use the VP-116 in Channel, Frequency, and ALE modes.

VP-116 Testing Modes

Covers Local Loopback (LLB) and Built-In-Test (BIT) modes for the VP-116 unit.

Vocoder Functionality and Configuration

Vocoder Modes and Keys

Explains PVT, DIG, and CLR modes and how to select vocoder keys.

Programming the Vocoder

Details on programming PVT keys, viewing configuration, and erasing stored keys.

MICOM-3 GPS Receiver Operation and Data

GPS Receiver Functions and Data Formats

Describes GPS data acquisition and LLA/ECEF format options.

GPS Antenna Installation and Placement

Guidance on antenna description, selection, and proper installation location.

Sending Position Data via ALE

Instructions for sending position reports and requesting positions from other stations.

Radio Installation Procedures

General Installation Planning

Covers government regulations, inspection, and site selection for installation.

MICOM-3 R and MICOM-3 F Installation

Details the installation procedure for MICOM-3R and MICOM-3F in vehicles.

DC Power and Ground Connections

Explains proper DC power and ground connections for vehicular installation.

MICOM-3 Radio Maintenance Guidelines

Preventative Maintenance Checks

Routine checks for system integrity and periodic calibration requirements.

Using the Built-In Test (BIT) Function

Guides on performing self-tests to identify malfunctions and check unit operation.

Troubleshooting MICOM-3 Radio Issues

Common Problems and Corrective Actions

Troubleshooting chart identifying common problems and their solutions.

Interpreting Fault Messages

Lists potential error codes and their probable causes for quick diagnosis.

Service and Support Information

Radio Checks Before Service Request

Basic checks to perform before contacting service representatives.

Appendix A: micomTrooper 3 Backpack Transceiver

micomTrooper 3 Overview and Features

Introduces the micomTrooper 3, its purpose, and key functional descriptions.

Preparing micomTrooper 3 for Operation

Covers unpacking, harness installation, battery setup, and accessory connection.

Preparing micomTrooper 3 for Static Operation

Instructions for connecting dipole or long-wire antennas for static operations.

micomTrooper 3 Battery Charger (FLN9541) Operation

Charger Purpose and Operating Instructions

Details the purpose and step-by-step instructions for using the FLN9541 charger.

List of Procedures and Manual Navigation

Procedure Reference Guide

An index of procedures with corresponding page numbers for quick access.

Micom 3T Specifications

General

Brand	Micom
Model	3T
Category	Transceiver
Language	English

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