Mentor XL
12.4.3
Suggested cable types
•
For cable runs <35 m (120 feet
) use RG59 cable. This is a low cost 75Ω cable but is
relatively easy
to source and terminate.
•
For cable runs <70 m (230 feet) use cable type CT125 (known as CX125 in some markets). This is
a 75Ω cable
used for CCTV and Satellite TV installations.
•
For cable runs <100 m (320 feet) use cable type LMR-
400. This is a high quality 50Ω cable. An
ultra-flexible version is also available but with slightly higher attenuation, reducing the maximum
cable length to 85 m. BNC connectors are available for the LMR-400 series. Cable type CT150 can
also be used for cable runs approaching 100 m but it has
75Ω impedance so LMR
-400 is
preferred.
•
For cable lengths >80m, consider the use of the external receiver described in section 12.5.
Recommended Cable Types For Use With Trimble Bullet III Antenna
RG59
CT125
CT167
LMR400
Nominal Impedance (Ω)
75
75
75
50
Nominal Diameter (mm)
6.15
7.8
10.1
10.3
Cable < 35 metres
Cable < 50 metres
Cable < 75 metres
Cable < 100 metres
CT125 is also marketed as CX125
Page 63 of 84
Trilogy Communications
