Using the Channel Mode. Micom 3T, MICOM-3F M91AMNOKV5-K, MICOM-3T M90AMNOKV5-K, 3R, MICOM-3R M95AMNOKV5-K, 3f

MICOM-3F/3T/3R HF-SSB Owner’s Guide

Filter Bandwidth

The filter bandwidth depends on the type of signal to be transmitted and received. A default filter bandwidth can be configured for each channel (if no particular filter is set for the current channel, the radio retains the previously used filter). When a new type of call is received or sent, the bandwidth filter changes automatically, depending on the PTT source (voice, data or CW), and the programmed bandwidth for the channel being used.

Bandwidth set to: Service type:

2.1 K Data

2.7 K

3.0 K

3.3 K

CW

LSM

Voice

Data

High speed data, vocoder, or voice privacy device

Morse

Low speed data

Filter changes after:

First data PTT

First microphone or voice PTT

First data PTT

First data PTT

First CW PTT

First data PTT

Note

When the filter bandwidth is set to CW, the following CW bandwidths can be configured in the Programming mode: 0.25 K, 0.5 K or 0.8 K.

Using the Channel Mode

The Channel mode is used for choosing channels already programmed in the MICOM-3.

The following sections describe how to use the Channel mode.

Selecting the Channel Mode

In general, the MICOM-3 automatically enters the Channel mode when turned on, and starts using the last used channel.

If not, use the Menu screen to select the Channel mode: this is the first item on the menu you see when you press

MENU

.

➤

To enter the Channel mode:

1. Press to display the Menu screen.

MICOM-3

MENU CHAN

FREQ

I

ALE

BIT

MICOM-3

CH 1

2. Press (F1).

The last active channel flashes in the display.

3. Press to confirm your choice, or select another channel as explained in the Choosing a New Channel section starting on page 21.

18

Basic Operating Instructions

Channel Mode Options

In the Channel mode, you can operate a variety of functions and options which can help eliminate noise or otherwise assist reception and/or transmission. The display reflects the options selected.

Note

The changing of the channel options is temporary. When you change the currently used channel, all the current options will be lost and replaced by the values configured for the newly selected channel.

➤

To select Channel mode options:

Refer to Figure 2 for a concise description of the options available in the Channel mode.

Additional options are available for MICOM-3 with the GPS receiver option (see the Using

the MICOM-3 GPS Receiver section starting on page 104).

TXM

(F1) – press to switch to the channel transmit frequency

(appears only when using a duplex or Tx only channel). After releasing, the radio returns to the receive frequency.

MICOM-3

CH 1

T 15,000.00

USB

TXM

BAND

I

SQ

DSP

Note

For a MICOM-3 with the VP-116 option, this position displays

PVT

or

CLR

(for the vocoder option, you may also see

DGTL

) respectively. Pressing F1 then toggles the operating mode of the VP-116 or vocoder.

BAND

(F2) – toggles between upper sideband (USB) and lower sideband (LSB).

MICOM-3

CH 1

BAND USB

USB

SQ

BAND

I

SQ

DSP

SQ

(F3) – toggles the squelch on/off.

MICOM-3

CH 1

SQUELCH ON

USB

SQ

BAND

I

SQ

DSP

DSP

(F4) – accesses the Digital Signal Processing menu, which includes the following options:

MICOM-3

CH 1

DSP PARAM

USB

SQ

CLAR

NF

I

NB

•

CLAR

(F1) – controls the clarifier (off/lower frequency/higher frequency).

MICOM-3

CH 1

CLAR OFF

USB

SQ

<--

-->

•

NF

(F2) – controls the notch filter (off/lower frequency/higher frequency).

MICOM-3

CH 1

NF OFF

USB

-->

SQ

19

MICOM-3F/3T/3R HF-SSB Owner’s Guide

Note

The

CLAR

(F1) and

NF

(F2) function keys are not available for TXO (transmit only) channels.

•

CLIP

(F3) – toggles the clipper on/off.

MICOM-3

CH 1

CLIP - OFF

USB

SQ

CLAR

NF

I

NB

•

NB

(F4) – toggles the noise blanker on/off.

MICOM-3

CH 1

NB - OFF

USB

SQ

CLAR

NF

I

NB

•

ATTN

(MORE, F2) – toggles the attenuator on/off.

MICOM-3

CH 1

ATTEN - ON

USB

SQ

ATTN

I

PWR

(MORE, F1) – selects the transmit power level (LOW, MED,

HIGH or MAX).

MICOM-3

CH 1

POWER LOW

USB

SQ

LOW

MED

HIGH

MAX

MODE

PLT).

(MORE, F2) – selects the operation mode (SSB, AME or

MICOM-3

CH 1

MODE SSB

USB

SQ

SSB

AME

PLT

AGC

(MORE, F3) – controls the automatic gain control function

(fast/slow/off).

MICOM-3

CH 1

AGC FAST

USB

SQ

PWR

MODE

I

BW

BW

(MORE, F4) – selects the filter bandwidth.

MICOM-3

CH 1

BW 2.7

USB

2.1

2.7

I

3.3

SQ

RCLV

(MORE, MORE, F1) – displays the receive level when F1 is pressed.

When ALE is active, three additional options appear:

•

CALL

– initiates an ALE call.

•

PAGE

– displays the stacked received messages.

•

MON

– enables/disables the speaker during ALE link establishment.

For a description of these options, refer to the Using Automatic Link Establishment (ALE) chapter starting on page 34.

20

Basic Operating Instructions

MICOM-3

CH 6

F 16,000.00

USB

BAND

I

DSP

VP

VP-116 only

PVT#

CLR

Vocoder only

VCD

PVT#

DGTL

CLR

TXM

For duplex and TX only channels

More

More

Only for ALE Enabled

More

BAND

LSB

USB

SQ

ON

OFF

DSP

CLAR

..

..

..

..

..

..

OFF

..

..

+200

NF

..

..

PWR

LOW

MED

HIGH

MAX

MODE

SSB

AME

PLT

CLIP

NB

ATTN

ON

OFF

ON

OFF

ON

OFF

AGC

SLOW

FAST

OFF

BW

2.1

2.7

3.0

3.3

LSM

CW

RCLV

Note 1

GPS

Note 2

More

CALL

SEND

PAGE

Figure 2. Channel (CH) Menu

Notes

The

RCLV

item appears only if the received signal level display is not permanently enabled using

MENU

>

PROG

>

RAD

>

PRMT

>

RCLV

.

The

GPS

item appears only if your radio includes the GPS option.

MON

ON

OFF

MULT ALL

NET

GRP

ANY

WILD

SELF

SEND

PAGE

GLOB

SEL

SEND

PAGE

CHAN

SEND

PAGE

CHAN

SEL

SEND

PAGE

CHAN

SEL

SEND

PAGE

CHAN

SEL

SEND

CHAN

Choosing a New Channel

➤

To choose a channel:

MICOM-3

MENU

1. If you are not in the Channel mode, press

MENU

to display the menu screen, and press

CHAN

(F1).

CHAN

FREQ

I

ALE

BIT

MICOM-3

CH 1

The last used channel number is displayed, blinking.

21