General Research of Electronics Inc 0716 用户手册

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页码 134
you plan to attach the mounting bracket to a fixed surface with 
screws.
Attach the two self-adhesive rubber washers to the inside of the 
mounting bracket sides, over the holes that are used when 
attaching the bracket to the scanners side holes. Be sure to 
align the holes in the washer carefully with the holes in the 
mounting bracket. The rubber washers help protect the scanners
case from scratches. 
Slide the scanner carefully into the mounting bracket assembly,
and use the two provided knurled knobs to secure the scanner 
within the mounting bracket.
Connect the supplied DC power supply to your wall outlet. 
Connect the coaxial power plug to the radio. 
WARNING:
To prevent electric shock, do not use the AC adaptor s polarized 
plug with an extension cord, receptacle, or other outlet unless 
you can fully insert the blades to prevent blade exposure.
Attach the supplied antenna to the radio.
Your scanners sensitivity to various frequencies depends on its 
location and the antennas length. For best reception, adjust the 
antennas length as follows:
Frequency
Antenna Length
25-54 MHz
Extend fully
108-174 MHz
Extend 4 segments
216-225 MHz
Extend 3 segments
225-406 MHz
Extend 2 segments
406-1300 MHz
Collapse fully
NOTE:
If desired, you may also connect an external base station antenna 
feedline equipped with a BNC male connector to the antenna 
connector. Please refer to the section entitled “Connecting an 
Optional External Antenna” below for important instructions and 
warnings.
Mobile operation
By attaching the mounting bracket such that it is located on top 
of the radio, it is possible to mount the radio underneath your 
vehicles dashboard, or in any other mounting location where the 
radio will be suspended from above. You may also use the 
mounting bracket such that it is located underneath of the radio, 
0716 User Manual
Page 28