Kenwood MC-48 User Manual

KENWOOD
AUTOPATCH MICROPHONE IMvI G = 2}. Ss
INSTRUCTION MANUAL
INTRODUCTION
The MODEL MC-48 is an AUTOPATCH MICRO-
PHONE specifically designed to be used with KEN-
WOOD TRANSCEIVER models TW-4000A, TM-
201A and TM-401A. It features a 16 key AUTO-
PATCH encoder and frequency UP and DOWN
switches.
FEATURES:
1. Microphone is equipped with a tone-pad en-
coder.
2. A built-in delay holds the microphone (and
transceiver) in transmit mode for about 0.7
second between key presses.
Se)
. Micro switch is used for PTT.
4. Specifically designed for transceiver operation to
provide good sensitivity and frequency response
and clear tones.
APPLICABLE MODEL
TW-4000A
TM-201A, TM-401A
SPECIFICATIONS
[GENERAL]
Power requirement
Current drain:
Connector:
Dimensions:
Weight:
[MICROPHONE]
Element:
Sensitivity:
impedance:
[AUTOPATCH]
Key:
Tone output
8.5 VDC + 10%
Less than 20mA (at 8.5
V DC)
8 pins
W 51xH 73x D 33 mm
145 gr. (Approx.)
Electret condensor
—70dB (OdB=1V/1iu
bar)
9002.
16 keys
3.8mV/5.6KQ
(Adjustable)
(With the keys 3 and 6
simultaneously depressed)
G) 8C (+8 V) (4) UP
(3) DWN
© NC
(2) STBY (PTT)
(4) MIC
(8) GND
FRONT VIEW
OPERATION:
16 Key AUTOPATCH encoder
When the tone encoder is started operating, the
transceiver is set in transmit mode even with the
PTT switch released.
Frequency UP/DOWN switches
These switches are used to step the operating fre-
quency up or down.
When the UP or DOWN switch is held depressed,
the frequency shifts rapidly.
PTT switch
Simply press the PTT switch to activate the trans-
mitter.

Kenwood MC-48 Specifications

General

Brand	Kenwood
Model	MC-48
Category	Microphone
Language	English

Summary

Introduction to the Kenwood MC-48 Autopatch Microphone

Key Features of the MC-48 Microphone

Applicable Models for MC-48 Microphone

Specifications of the MC-48 Microphone

General Specifications

Details general specifications including power, current, connector, dimensions, and weight of the MC-48 microphone.

Microphone Specifications

Covers microphone-specific details such as element type, sensitivity, and impedance.

Autopatch Specifications

Outlines specifications related to the autopatch function, including key count and tone output.

Operation of the MC-48 Microphone

16 Key Autopatch Encoder Operation

Explains the function of the 16-key autopatch encoder, including transmit mode activation.

Frequency UP/DOWN Switches

Details how the UP/DOWN switches are used to change operating frequency.

PTT Switch Operation

Describes the function of the PTT switch for activating the transmitter.

Schematic Diagram of MC-48 Microphone

Frequency Response Graph