HYBRIFLEX Standard LTE, Cabling Solution for 4 RRU

Rev : B | Rev date : 11 Feb 2021

RFS' HYBRIFLEX cabling solution for Remote Radio Unit (RRU) combines optical fiber and DC power in a single lightweight aluminum corrugated cable, making it the world's most innovative solution for RRU deployments. It was developed to reduce installation complexity and cost at Cellular sites.
HYBRIFLEX cabling solutions allows mobile operators deploying RRU architecture to standardized installation process and eliminates the need and the cost for an internal grounding wire.
The HYBRIFLEX cable is part of a site installation kit. It consists of an armored bundle of 4 unshielded DC cables, 8 F/O distribution cables and a rip cord to adjust the breakout part of the cable.


  • A corrugated armor with excellent bending characteristics minimizes installation time and enables mechanical protection and EMC shielding
  • Outer conductor grounding eliminates typical additional grounding requirement and saves on installation costs
  • Lightweight solution and compact design decreases tower loads
  • Robust cabling eliminates need for expensive cable trays and conduits
  • Installation of stripped fiber optic cable pairs directly to RRH reduces CAPEX and wind load by eliminating need for junction boxes
  • F/O and DC housed in single corrugated cable saves CAPEX by standardizing RRH cable installation and reducing installation equipments


Technical features


Cable Type4 RRU HYBRIFLEX™ Standard LTE
Fire PerformanceFlame Retardant, LSZH

Mechanical Specifications

Outer Diameter Nominal mm (in)27.8 (1.09)
Cable Weight kg/m (lb/ft)0.86 (0.58)
Minimum Bending Radius, (Operating)mm (in)120 (4.7)
Minimum Bending Radius, (Installation)mm (in)250 (9.8)
Tensile Strength N (lb)700 (157)
Recommended / Maximum Clamp Spacing m (ft)0.8 / 1 (2.75 / 3.3)

DC Power Cable Specifications

Number of DC Pairs4
Maximum DC-Resistance Power Cable Ω/km (Ω/kft)3.3 (1)
Cross Section of Power Cable mm² (AWG)6 (10)
Shieldingprovided by aluminium armor
DC Wire Jacket MaterialPolyethylene, PE, Metalhydroxite Filling
DC Wire Jacket Thickness mm (in)0.5 (0.02)
DC Cable Single Bending Radius mm (in)100 (3.94)
DC Cable Diameter mm (in)9.9 (0.39)
DC Cable JacketUV stable black and blue PE
DC Standards (Meets or Exceeds)IEC 60228

Cable Jacket

UV-Protection Individual and External JacketYes
Jacket MaterialUV stable black PE

Armor Specifications

Armor TypeCorrugated Aluminum tube
Maximum DC-Resistance of Armor Ω/km (Ω/kft)1.21 (0.37)
Copper Equivalent Cross Section of Armor mm² (AWG)16 (5)
Diameter Corrugated Armor mm (in)25.2 (0.99)

F/O Cable Specifications

F/O Cable TypeTight-Buffer, Single mode
Number of F/O Pairs8
Core/Clad µm9 /125
Secondary Protection Nominal µm (in)900 (0.035)
Single Bending Radius mm (in)69 (2.71)
Cable Diameter mm (in)6.9 (0.27)
F/O Cable JacketUV stable black PE
F/O Standards (Meets or Exceeds)ITU G 657.A2

Testing and Environmental

Storage Temperature °C (°F)-40 to 85 (-40 to 185 )
Operation Temperature °C (°F)-40 to 85 (-40 to 185 )
Installation Temperature °C (°F)-20 to 50 (-4 to 122 )
Jacket SpecificationsIEC 60332-3-24, UL 1581.sec.1080
LSZH SpecificationIEC 60754-1 / 2, IEC 61034-1/2

Product Detail