19
18
4
5
6
No signal
The transmi-
tting red light
is on, but no
voice is heard.
The receiving
green light is
on, but no
voice is heard.
A. The antenna is in poor contact. Please fasten
the antenna head.
B. The HF amplifier is broken, please change it.
C. The squelch level is so high that the squelch
cannot be opened. Please reset the squelch
level.
D. The mixer tube is broken, please change it.
E. The FM processing IC is broken, please
change it.
A. The power module is broken, so there is no
power output. Please change it.
B. The microphone is broken, please change it.
A. The speaker is broken, please change it.
B. The audio amplifier is broken, please change
it.
No
.
Problem Causes and Solutions
Specifications
PT6700
General Specification
Frequency
Number of channels
Channel spacing
Dimension(H×W×D)
Weight
Operating temperature
Receiving sensitivity
Frequency stability
Tx power
Max. frequency deviation
Max. audio power
Power supply
136~174MHz, VHF
400~470MHz, UHF
16
25kHz(W) /12.5kHz(N)
122mm x54mmx33mm
298g(including battery and antenna)
-25
℃
~+55
℃
≤
0.28μV
±2.5ppm
4W
(
UHF
)，
5W
(
VHF
)
＜
2.5 KHz
(
W
)
/
＜
5 KHz
(
N
)
≥
1000mW(16
Ω
)
DC7.4V
