Icom SM-30 - User Manual

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INSTRUCTIONS

DESKTOP MICROPHONE

SM-30

Thank you for purchasing the SM-30

d e s k t o p m i c r o p h o n e .

This is a unidirec-

tional, electret microphone designed

for base station operation with an Icom

transceiver.

Please read these instructions thorough-

ly before using the microphone.

PRECAUTIONS

CAUTION: NEVER expose the microphone

to rain, snow or any liquids.

CAUTION: NEVER let metal, wire, etc.

touch any internal part of the microphone.

CAUTION: NEVER touch or operate the

desktop microphone with wet hands.

DO NOT place the microphone in exces-

sively dusty environments or in direct sun-

light.

DO NOT use harsh solvents such as ben-

zine or alcohol to clean the microphone,

as they can damage the microphone’s sur-

faces.

Place the microphone in a secure place to

avoid inadvertent use by children.

This microphone is for the specified Icom

transceivers only! — The microphone can-

not be used with a non-Icom transceiver

since the power is supplied from the con-

nected transceiver.

About CE

The SM-30 complies with the

essential requirements of the

2004/108/EC directive for

Electromagnetic Compatibility.

• Microphone type : Unidirectional electret condenser microphone (preamp built-in)

• Output impedance : 600 Ω ±30% (at MIC GAIN: Max)

• Sensitivity : –28 dB ±4 dB (0 dB=1 V/Pa, at 1 kHz)

• Power requirements : 8 V DC (supplied from the transceiver)

• Cable length (approx.) : 1 m; 3 ft 3

⁄8 in

• Weight (approx.) : 350 g; 12.3 oz

All stated specifications are subject to change without notice or obligation.

1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan

A-6829X-1G-q Printed in Japan

PART NAMES AND FUNCTIONS

Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan,

the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.

SPECIFICATIONS

D PLUG PIN ASSIGNMENTS

The pins are described from the direction of the arrow in the illustration.

y GND (PTT ground)

t PTT

r No connection

q Microphone output

w 8 V DC input

e No connection

u GND (Microphone ground)

i No connection

D TOP VIEW

q PTT SWITCH

Push to transmit, then release to re-

ceive.

w PTT LOCK SWITCH

Push to continuously transmit. The

transmission continues until pushing this

switch again.

e PTT LOCK INDICATOR [LOCK]

Lights red when the PTT lock switch

(w) is ON.

D BOTTOM VIEW

MIC GAIN

ONOFF

LOW CUT

r MIC GAIN VOLUME [MIC GAIN]

Rotate to adjust the microphone out-

put level.

• Use this control as an adjunct to the

microphone gain setting of the con-

nected transceiver.

Rotating the control too far clockwise

may result in an output level that is

too high and transmit signal distor-

tion.

t LOW CUT SWITCH [LOW CUT]

Cuts out the low frequency components

of input voice signals.

Need help?

Do you have a question about the Icom SM-30 and is the answer not in the manual?

Summary

Part Names and Functions

Top View Controls

Details the PTT switch, PTT lock switch, and lock indicator on the microphone's top surface.

Bottom View Controls

Details the microphone gain and low cut switches on the microphone's bottom surface.

Precautions and Safety

Handling and Environmental Warnings

Covers critical safety advice on avoiding liquids, metal contact, wet hands, dust, sunlight, and harsh solvents.

The Icom SM-30 Desktop Microphone is a unidirectional electret microphone designed for base station operation with compatible Icom transceivers. This manual provides essential information for its proper use and maintenance.

Function Description

The SM-30 serves as an input device for voice communication through an Icom transceiver. It converts spoken words into electrical signals that can be transmitted. The microphone features a built-in preamp to optimize audio quality. Power for the microphone is supplied directly from the connected transceiver, meaning it cannot be used with non-Icom transceivers.

Usage Features

The microphone is equipped with several controls to enhance its functionality and user experience:

PTT Switch: This is the primary control for transmitting. Pressing the switch initiates transmission, and releasing it returns the transceiver to receive mode.
PTT Lock Switch: For continuous transmission, this switch can be engaged. Once pressed, transmission will continue until the switch is pressed again to disengage it.
PTT Lock Indicator: A red light illuminates when the PTT lock switch is active, providing a visual cue of continuous transmission.
MIC GAIN Volume: This rotary control allows the user to adjust the microphone's output level. It acts as an auxiliary control to the microphone gain setting on the connected transceiver. Users should exercise caution when adjusting this control, as rotating it too far clockwise may lead to an excessively high output level and potential distortion of the transmitted signal.
LOW CUT Switch: This feature is designed to improve voice clarity by cutting out low-frequency components from the input voice signals. This can be particularly useful in environments where background noise might interfere with speech intelligibility.
Plug Pin Assignments: The microphone connects to the transceiver via a multi-pin plug. The pin assignments are clearly defined to ensure proper connection and functionality. These include pins for microphone output, 8V DC input (power from the transceiver), PTT (Push-To-Talk) signal, and ground connections for both the microphone and PTT. There are also pins designated as "No connection."

Maintenance Features

Proper care and handling are crucial for the longevity and optimal performance of the SM-30 microphone. The manual outlines several precautions:

Environmental Protection: The microphone should never be exposed to rain, snow, or any other liquids. Similarly, it should not be placed in excessively dusty environments or subjected to direct sunlight. These conditions can damage the internal components and affect performance.
Electrical Safety: Users must never allow metal, wire, or any other foreign objects to touch the internal parts of the microphone. This prevents potential short circuits or damage to the electronics.
Handling with Care: It is important to avoid touching or operating the desktop microphone with wet hands, as this could pose an electrical hazard or damage the device.
Cleaning: When cleaning the microphone, harsh solvents such as benzene or alcohol should not be used. These substances can damage the microphone's surfaces and potentially affect its functionality. A gentle, dry cloth is recommended for cleaning.
Storage: To prevent inadvertent use, especially by children, the microphone should be stored in a secure place when not in use.

The SM-30 is designed for ease of use and reliability within the Icom ecosystem. Adhering to these guidelines will help ensure its continued performance and extend its operational life.

Icom SM-30 Specifications

Microphone Specifications

microphone type	Unidirectional electret condenser microphone (preamp built-in)
output impedance	600 Ω ±30% (at MIC GAIN: Max)
sensitivity	–28 dB ±4 dB (0 dB=1 V/Pa, at 1 kHz)

Power