Aug 042016
 

Data Alliance uses low-loss coaxial cable in all of our antenna cables, as opposed to the old standard, RG cable that is used in most other brands of antenna cables.

The term “low loss” antenna cables refers to the’ low attenuation (loss) over distance, of the coaxial cable used in the antenna cable, relative to a typical old standard, RG cable.   Low loss coaxial cable has far better shielding than typical RG style cable thus achieving better low loss characteristics.  Additionally, low loss coaxial cables use solid center conductors which offer lower attenuation than stranded conductors that are sometimes found on RG style cables. Low loss coaxial cables are typically used in WLAN, Cellular, PCS, ISM and many other wireless applications.

Signal Loss in Certain Coax Types for four most-used frequencies for WiFi and 4G (thinnest to thickest, left to right):

RG-174RG-174 Attenuation Per Foot:

  • at 900 MHz: 0.31447 db/ft
  • at 2.4 GHz: 0.60237 db/ft
  • at 3.4GHz: 0.76886 db/ft
  • at 5.1-5.8GHz: 1.1134 db/ft

RG-178RG178 Attenuation Per Foot:  (RG178: clear jacket over copper braid)

  • at 900 MHz: 0.55 db/ft
  • at 2.4 GHz: 0.89 db/ft
  • at 3.4GHz: 1.02 db/ft
  • at 5.1-5.8GHz: 1.38 db/ft

LMR-100LMR-100: Attenuation Per Foot in LMR100A Coax: (black jacket)

  • at 900 MHz: 0.23 db/ft
  • at 2.4 GHz: 0.39 db/ft
  • at 3.4GHz: 0.47 db/ft
  • at 5.1-5.8GHz: 0.643 db/ft

RG-58RGB-58 Attenuation Per Foot:

  • at 900 MHz: 0.1365 db/ft
  • at 2.4 GHz: 0.258 db/ft
  • at 3.4GHz: 0.328 db/ft
  • at 5.1-5.8GHz: 0.479 db/ft

LMR-200LMR-200: Attenuation Per Foot or meter in LMR-200 Coax:

  • at 900 MHz: 0.39 db/ft
  • at 2.4 GHz: 0.42 db/ meter
  • at 3.4GHz: 0.83 db/ft
  • at 5.1-5.8GHz: 0.108 db/ft

LMR-400LMR-400: Attenuation Per Foot in LMR400 Coax:

  • at 900 MHz: 0.228 db/ft
  • at 2.4 GHz: 0.391 db/ft
  • at 3.4GHz: 0.532 db/ft
  • at 5.1-5.8GHz: 0.641 db/ft

The attenuation rate per foot does not change with length of the cable:  i.e.,  attenuation at 10 feet is 10x the attenuation at one foot, etc.

Attenuation In Coax For Antenna Cables:   Signal strength is lost in the antenna cable:   It is best to have the shortest cable that will serve your needs.

As coaxial antenna cable transfers radio frequency (RF) power from one point to another, the power that enters it is degraded along the length of the RF cable, meaning less power reaches the remote than entered the RF cable. This loss of power in the coax cable is what is referred to as attenuation. The loss is defined in terms of decibels/unit length at a given frequency:

Coax used in Data Alliance’s antenna cables:  We use low loss antenna cables for superior connection quality.  Suited for indoor and outdoor use, our cables provide superior matching and loss values.  Both connectors are soldered, not crimped, for the best possible signal quality. 

Our shorter cables (less than two meters) we make with cable type equivalent to LMR100A or higher,  in quality and signal-loss per meter.  All of our cables of 2-meters or more are made from cable equivalent to LMR200 in quality and signal-loss per meter.  The higher quality of the cable of our cables translates into lower sigal loss / better performance. 

Our cables of 2-meters to 9-meters are made from cable-type equivalent to LMR200 in quality and signal-loss per meter.  Longer cables made from cable-type equivalent to LMR400 The higher quality of the cable of our cables translates into lower signal loss & better performance. 

SOLUTIONS FOR SIGNAL LOSS:  

The solution is to reduce the length of antenna cables or eliminate them altogether, if possible:  Bring the WiFi device as close as possible to the antenna.  

Use one of the following solutions:

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