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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.
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