Accessory Connections; External Speaker; Microphone - Kenwood TM-281A Instruction Manual

ACCESSORY CONNECTIONS

E S
XTERNAL PEAKER
1
If you plan to use external speaker, choose speaker
with an impedance of 4 Ω to 8 Ω (standard is 8 Ω). The
external speaker jacks accept a 3.5 mm (1/8") mono
(2-conductor) plug.
6
M
ICROPHONE
For voice communications, connect a 600 Ω microphone
equipped with an 8-pin modular plug into the modular
socket on the front of the main unit. Press firmly on the
plug until the locking tab clicks.
Attach the supplied microphone hanger in an appropriate
location using the screws included in the screw set.
Microphone hanger

Microphone

hanger screw
(3 mm x 10 mm)
Keypad serial data
No Connection
MIC, 600 Ω impedance
GND (MIC)
PTT
GND
DC 8 V, 100 mA max
No Connection