T W - 4 7 T W O - W A Y R A D I O I N T E R F A C E
1 - 6
Figure 1-4: Relay in series with the microphone
Figure 1-5: Relay across the sleeves of the mic and earphone con-
nectors
1
2
3
4
5
6
7
8
9
From walkie-talkie
earphone
To walkie-talkie
microphone input
Shield
Tip
Tip
Shield
Example 2
: Relay in series with the microphone
Jumper settings
J6 On (DC path for mic)
J7 Off
J8 On (Medium gain mic input)
1
2
3
4
5
6
7
8
9
From walkie-talkie
earphone
To walkie-talkie
microphone input
Shield
Tip
Tip
Shield
Example 1
: Relay across the sleeves of the microphone
and earphone connectors
Jumper settings
J6 On (DC path for mic)
J7 Off
J8 On (Medium gain mic input)
