B&B Electronics ZZ24D-NA(NB,NC,ND)-SR - Manual - Manual (Page 20)

Product Introduction
14 Manual Documentation Number: pn7515_ZlinxIO-0712m
2.5.7.3 Cable Loss
Those high frequencies you are piping to your antennas don’t propagate particularly well through cable and connectors. Use
high quality RF cable between the antenna connector and your antenna and ensure that all connectors are high quality and
carefully installed. Factor in a 0.2 dB loss per coaxial connector in addition to the cable attenuation itself. Typical attenuation
figures per 10 feet (3 meters) for two popular cable types are listed below.
Cable Types
Frequency RG-58U* LMR-400*
900 MHz 1.6 dB 0.4 dB
2.4 GHz 2.8 dB 0.7 dB
*Loss per 10 feet (3 meters) of cable length
Figure 6 Attenuation figures
While long cable runs to an antenna create signal loss, the benefit of elevating the antenna another 25 feet (7.6 m) can more
than compensate for those lost dB.