Technical Data Sheet
RLK12-50JFNA
1/2" RADIAFLEX® RLK Cable, A-series
Product Description
  • RADIAFLEX® functions as a distributed antenna to provide communications in tunnels, mines and large building complexes and is the solution for any application in confined areas.
  • Slots in the copper outer conductor allow a controlled portion of the internal RF energy to be radiated into the surrounding environment. Conversely, a signal transmitted near the cable will couple into the slots and be carried along the cable length.
  • RADIAFLEX® is used for both one-way and two-way communication systems and because of its broadband capability, a single radiating cable can handle multiple communication systems simultaneously.
  • This RADIAFLEX® radiating cable utilize a low-loss cellular polyethylene foam dielectric and a smooth copper outer conductor which offers a superior electrical performance together with good bending properties.
Features/Benefits
  • Wideband from 30 MHz to 980 MHz
  • For applications in tunnels and buildings
  • Low coupling loss variations
RLK12-50JFNA
Technical Specifications
Size [ in ] 1/2"
Maximum Frequency [ MHz ]  980.0
Cable Type RLK
Jacket JFN
Slot Design Groups of vertical slots at short intervals
Previous Model Number  
Impedance [ Ω ] 50.0
Velocity [ % ] 87.0
Capacitance [pF/m (pF/ft)]  
Inductance [ µH/m (µH/ft)]  
Inner Conductor dc Resistance [ Ω/km (1000 ft) ]  
Outer Conductor dc Resistance [ Ω/km (1000 ft) ]  
Outer Conductor Material:  Overlapping Copper Strip
Inner Conductor Material:   Copper Clad Aluminum Wire
Diameter over Jacket [ mm (in) ]  
Diameter Outer Conductor: [ mm (in) ]  
Diameter Inner Conductor: [ mm (in) ]  
Minimum bending radius, single bending [ mm (in) ]  
Cable Weight [ kg/m (lb/ft) ]  
Max. tensile force [ N (lb) ]  
Indication of Slot Alignment Bulge atop slots
Storage temperature [ °C (°F) ] -70.0 to 85.0 (-94.0 to 185.0 )
Installation temperature [ °C (°F) ] -25.0 to 60.0 (-13.0 to 140.0 )
Operation temperature [ °C (°F) ] -40.0 to 85.0 (-40.0 to 185.0 )
Stop band [ MHz) ] 300-375, 675-685
Recommended / maximum clamp spacing [ m (ft) ] 0.5 (1.6)
Minimum Distance to Wall [ mm (in) ]  
Length [ m (ft) ]  
Rev. Number  
Table of Losses

Frequency, MHzLongitudinal Loss, dB/100 m (dB/100 ft)Coupling Loss 50% dBCoupling Loss 95%, dB
75 2,17 (0,66) 46(50) 58(60)
150 3,11 (0,95) 54(58) 66(69)
400 5,59 (1,70) 53(55) 57(59)
450 5,88 (1,79) 52(55) 56(59)
470 6,01 (1,83) 52(55) 56(59)
500 6,20 (1,89) 52(55) 56(59)
800 8,50 (2,59) 55(58) 59(62)
870 9,07 (2,76) 56(59) 61(64)
900 9,41 (2,87) 57(60) 62(65)
960 10,51(3,20) 57(60) 62(65)
Standard conditions
Notes
  • Coupling loss as well as longitudinal attenuation of RADIAFLEX® cables are measured by the free space method according to IEC 61196-4.
  • Coupling loss values are measured with a radial (below 470 MHz) or parallel (above 470 MHz) orientated dipole antenna.
  • The coupling loss values given in brackets are average values of all three spatial orientations (radial, parallel and orthogonal) of dipole antenna.
  • Coupling loss values are given with a tolerance of +10 dB and longitudinal loss values with a tolerance of +5%. Note: Measured values below nominal are better. They are not limited by any tolerance-range.
  • In case of a conflict of operational and stop band, please contact RFS for further assistance.
  • As with any radiating cable, the performance in building or tunnel environments may deviate from figures based on free space method.;
All Information contained in the present datasheet is subject to confirmation at time of ordering.