5
3. Mount the antenna in such a position that no part of the human body will normally be
within 20cm of it for more than a few minutes while the radio is switched on, unless there
is an intervening metal screen (e.g. a metal roof) at least 0.3m
2
in area (e.g. 0.55m x
0.55m).
4. Terminate one end of the coaxial cable at the antenna. Good quality 50 ohm coaxial cables
such as RG58 or UR76 are suitable. Run the free end of the coaxial cable to the radio’s
mounting position and cut it to length allowing 200mm to 300mm excess.
5. Terminate the free end of the cable with the BNC crimp plug supplied, as shown below:
- Fit the crimp sleeve over the cable sheath.
- Trim the outer sheath from the cable to 15mm (see Figure 5 below).
- Trim the braid to 8.5mm.
- Trim the dielectric to 11mm. (Take extreme care not to ‘nick’ the centre conduc
tor with the trimming device.)
- Fit the male pin onto the centre conductor with the shoulder pressed against
the end of the dielectric.
- Crimp the male pin onto the centre conductor.
- Press the assembly firmly into the rear of the plug. (Ensure that no braid gets
trapped between the dielectric and the inside of the plug.)
- Slide the crimp sleeve over the braid and press against the shoulder of the plug.
- Crimp the crimp sleeve onto the braid and plug body.
Figure 5: Antenna Connector Assembly
To Next Page
Loading...
Need help?
General
