What is 7/8 leaky cable?
7/8 leaky cable, also known as leaky coaxial cable, is a cable similar to ordinary coaxial cable, consisting of an inner conductor, an insulating medium and an outer conductor with periodic slots. While electromagnetic waves propagate longitudinally in the 7/8 leaky cable, they also radiate outward through the slots. In addition, the external electromagnetic field can also be introduced into the cable through the slots and transmitted to the receiving end. The most popular and easy to use cell phone signal jammer.
Simply put, the 7/8 leaky cable is both a cable and an antenna.
Application scenarios of 7/8 leaky cable and ceiling antenna
The 7/8 leaky cable has uniform signal leakage, but the signal strength is low and the wall penetration ability is weak. Therefore, in scenarios where obstacles such as walls, columns, and partitions have a greater impact on the signal, it is crucial to ensure that the use area is unobstructed.
Although the signal distribution within the coverage range of the ceiling antenna may be uneven, as long as the spatial attenuation is within a certain range, regardless of the signal strength, it can meet business needs, and the material has little impact on signal propagation.
7/8 leaky cables are suitable for environments without wall shielding, such as tunnels, pipe corridors, and subways, while the use scenarios of ceiling antennas are very wide.
Cost-effectiveness
Although 7/8 leaky cables are more expensive than feeder cables, they are more suitable for straight, long-distance, and unobstructed environments. The signal coverage is uniform, the frequency range is wide, the radiation field is stable, and the compressive and tensile strengths are high. Although the price is high, when multiple systems (such as water level sensors, fans, pumps, and measurement robots) are introduced into the tunnel at the same time, the overall cost can be greatly reduced.
Comprehensive comparison
The 7/8 leaky cable has good signal uniformity in specific environments and no switching problems, but the cost is high and the application range is limited to specific environments (such as tunnels, etc.), while the application range of traditional antennas is much wider.
The use scenarios of 7/8 leaky cables are limited, but they perform well in tunnels, pipe corridors, subways, etc. The ceiling antenna is flexible to install and can be used in a variety of scenarios.
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