28 | CT710 Instruction Guide CT710 Instruction Guide | 29
Table of solutions
PROBLEM SOLUTION
The radio doesn’t switch
on
The battery may be exhausted. Recharge it.
Uncorrected installation. Re-install it.
Battery recharge doesn’t
last long
The battery pack is over. Change it with a
new one.
Battery pack is not completely charged.
Reception led turns on
but no sound heard
Make sure the volume is not too low
Make sure to have the same CTCSS and DCS
codes of your group
The keypad doesn’t work The keypad lock function hasn’t been ena-
bled.
In standby, the radio
transmits without
pressing PTT
VOX level has been set too low. Adjust it.
Some functions cannot
be stored
Ensure to be on Channel mode. In Channel
mode some functions can be set only
through the programming software.
Reception of other
group signal while
transmitting
Select another CTCSS/DCS for your group
Technical Specification
General
Frequency range 144-146MHz / 430-440MHz
Operative temperature -20° +55°C
Operating voltage 7.4V 1600mAh
Operating mode mono band / dual band
Dimensions 95(H) x 55(L) 31(D) mm
Weight 230gr (antenna included)
Antenna impedance 50Ω
Duty cycle 5/5/90
Transmitter
Frequency stability ±2.5ppm
Output power VHF: 5W / UHF: 4W
Max frequency deviation ±5KHz
Audio distortion ≤ 3%
Adjacent Channel Power within European legal terms
Spurious Radiation within European legal terms
Occupied Bandwidth within European legal terms
Receiver
RF sensitivity <0.2μV
Audio distortion ≤ 3%
Audio response 300Hz ÷ 3KHz
Adjacent Channel Selectivity within European legal terms
Intermodulation Rejection within European legal terms
Blocking within European legal terms
Specifications are subject to change without notice.
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