Radiod
d
ity
Extended manual for Radiod
d
ity DB25-D & GD-88
v2.0
© Radiod
d
ity 2022
page 191 of 209
17.4
RJ45 Speaker-Microphone connector of DB25-D
The Speaker-Microphone is connected via its RJ45-plug to the RJ45-socket of the
Radiod
d
ity DB25-D.
The RJ45 socket may also be used for programming the radio. It is based on 3.3 V
signals. The transmission speed is 115.2 kbaud.
Signal name
RJ45
Color
Speaker-Microphone*
Power Off (if connected to GND)
1
Grey
n.c.
PTT/Radio RXD (Data to Radio)
2
Blue
5
Microphone Audio
3
White
3
Cable Shield / analog ground
4
Silver
4
Radio TXD (Data from Radio)
5
Yellow
n.c.
Signal Ground
6
Black
6
+8V
7
Red
7
Speaker Audio
8
Green
8
*) Numbers as stated on the Speaker-Microphone internal PCB
17.5
K1 connector of DB25-D
At the left side of the radio there is a K1 socket with the following pin assignment:
Signal name
K1
PTT / Radio RXD (Data to Radio) 3.5 mm sleeve
Mic
3.5 mm ring
+5V via 100 Ω
3.5 mm tip
GND
2.5 mm sleeve
Radio TXD (Data from Radio)
2.5 mm ring
2.5 mm tip
Summary of Contents for DB25-D
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