User`s guide

Chapter 4 - Antenna Descriptions
RF Connectors/Cables Information
Shikoku 1.5DS-QEHV coaxial cable is used in the Hawk antenna assemblies. This cable is very
similar to RG-316. Figure 4.5 shows simplified views of the cable construction while Table 4.8
details the electrical and mechanical characteristics.
Figure 4.5: Antenna Cable Construction
Table 4.4 Characteristics of coaxial cable
Item Specification
Center Conductor
Tinned Annealed Copper Wire, 0.54mm
diameter (7strands of 0.18 mm)
Maximum inner conductor
resistance (20°C)
120 ohms/km
Dielectric/Insulation Cross linked polyethylene, thickness 0.53mm
Outer Conductor Tinned annealed copper
wire braid, outside diameter - 1.6mm
Jacket Sheath Material Thickness 0.5mm. Finished Diameter
of 3.1 +/- 0.20mm
Approximate weight of cable 15 kg/km
Minimum bend radius 31mm
Test voltage 1000V/min
Minimum insulation resistance 1000 Meg-ohm/km
Characteristic Impedance 50 +/- 2 ohms
Operating Temperature
Range
-40 to +105 ºC
Standard Attenuation
0.91 dB/m at 900 MHz
1.26 dB/m at 1500 MHz
1.32 dB/m at 1600 MHz
1.50 dB/m at 1900 MHz
1.54 dB/m at 2000 MHz
Motorola GPS Products - M12+ User's Guide Revision 6.X 09FEB05
58