User's Manual
48 Document Number: 0100SM1401 Issue: 12-16
RF Coaxial Cable
There are many types of RF coaxial cables available, but it is sometimes difficult to
know which type of cable to use.
There are two main aspects of a cable to consider when selecting the right cable for
the job.
Bend Radius:
The bend radius of a cable is a specification given to a cable to define how flexible
the cable is. Exceeding the bend radius specification can change characteristics
within the cable and lead to reduced RF performance. The thicker the cable is, the
wider its bend radius will be, however, the thicker the cable, the lower its electrical
resistance will be, providing less impact on the radio system gain.
The cable connected from the radio to the lightning arrestor is typically quite short. This allows a thin, flexible cable to be
used. Thin flexible cables have a higher electrical resistance characteristic than thick rigid cables, but as there is only a short
length being used, the impact on radio system gain is negligible. The thick rigid cable is typically connected from the hut to
the top of an antenna mast connected to an antenna.
Antenna Feedline Cable Loss:
The antenna feedline cable supplies the connection between the radio and the antenna. When long lengths of cable are
required, it is important to factor-in the cable loss associated with length and type of cable being used.
Feeder Tail Cables
Typical installations use a thin, flexible RF cable, to interconnect the radio, to the outside of a hut/cabinet, these cables are
called ‘Feeder Tail Cables’.
Schneider Electric offers a variety of Feeder Tail Cables:
Part E – Radio Planning and Design
RF Adaptors
RF adaptors can be useful where, two connectors are not of the same type, however, need to be connected (i.e. an antenna
port of a radio and an RF lead which interconnects the antenna)
Schneider Electric offers a variety of RF adaptors:
RF Adaptors
Order Code Notes
TBUMRFAPT-TNCF-NM
Trio RF Adapter TNC-Female to N-Male
TBUMRFAPT-TNCF-SMM
Trio RF Adapter TNC-Female to SMA-Male
TBUMRFAPT-NF-NF
Trio RF Adapter N-Female to N-Female - Flange Mount
Feed Tail Cables
Order Code Notes
TBUMRFJP-TNC-N-05M
Trio RF Cable Feeder Tail 1.5Ft/0.5m - TNC-Male to N-Male
TBUMRFJP-TNC-N-1M
Trio RF Cable Feeder Tail 3Ft/1m - TNC-Male to N-Male
TBUMRFJP-N-N-1M
Trio RF Cable Feeder Tail 3Ft/1m - N-Male to N-Male
TBUMRFJP-SMA-N-1M
Trio RF Cable Feeder Tail 3Ft/1m - SMA-Male to N-Male
TBUMRFJP-DUPLX-BP
Trio Band Pass Duplexer Cable Kit 3Ft/1m - Double-Screened RF223/U with N-Male to N-Male.
(QTY of 2). Suits TBUMDUPLXBPxxx