14
NO. KEY
FUNCTION
1
UP
Increase frequency, channel number or setting value.
2
DOWN
Decrease frequency, channel number or setting value.
3
PTT
Press the PTT (Push-TO-Talk) key to transmit.
4
Number Key
Input VFO frequency or DTMF dial out etc..
5
D T M F O N /
OFF
Switches between DTMF dialing or function operating.
6
LOCK Switch
Locks out the UP
、
Down
、
Numerical keys and Function
keys.
7
MIC
Speak here during transmission.
KeyPadSerialData
+5V
DOWN
UP
MICGND
MIC
PTT
GND
microphone
MIC Connector Diagram(in the front view of connector)
Getting Acquainted
Summary of Contents for DB477C
Page 1: ...1 DB477C Version 3 ...
Page 39: ...39 Notes ...