Lifetime Connectivity

RLKD12-50CPR
1/2" RADIAFLEX® RLKD Cable, A-series

Rev : A | Rev date : 15 Nov 2025
  • 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

  • Broadband from 800 MHz to 6000 MHz
  • For applications in buildings
rlk12-50jfna.jpg
Structure
Cable Type RLKD
Size 1/2
Inner Conductor Material Copper Clad Aluminum Wire
Outer Conductor Material Overlapping Copper Foil
Jacket CPR, EN50575 classified cable
Jacket Description Halogen free, non corrosive, flame and fire retardant, low smoke, polyolefin + flame barrier tape above outer conductor for lowest cable loss
Slot Design Groups of vertical slots at short intervals
Indication of Slot Alignment Bulge atop slots
Mechanical Specification
Diameter Inner Conductor 4.4mm (0.17in)
Diameter Outer Conductor 11.4mm (0.45in)
Minimum Bending Radius 200mm (7.9in)
Cable Weight 0.23kg/m (0.16lb/ft)
Tensile Force 1,300N (292lb)
Recommended / Maximum Clamp Spacing 0.5m (1.6ft)
Minimum Distance to Wall 80mm (3.15in)
Electrical Specification
Impedance 50 +/- 2 Ω
Max. Operating Frequency 6,000 MHz
Velocity 88 %
Capacitance 76pF/m (23.2pF/ft)
Inductance 0.19µH/m (0.058µH/ft)
DC-resistance inner conductor 1.97Ω/km (0.6Ω/kft)
DC-resistance outer conductor 4.84Ω/km (1.48Ω/kft)
Stop bands 1450-1550, 2900-3100, 4350-4650
Frequency Selection 600 900 1800/1900 2200 2400 2500 2700 6000
Testing and Environmental
Operation Temperature -40 - 85 °C (-40 - 185°F)
Installation Temperature -25 - 60 °C (-13 - 140°F)
Storage Temperature -70 - 85 °C (-94 - 185°F)
Compliance Test methods for fire behaviour of cable :
IEC 60754-1/-2 smoke emission: halogen free, non corrosive
IEC 61034 low smoke
IEC 60332-1 flame retardant
IEC 60332-3-24 fire retardant
UL1666, ASTM E 662, NES711 and NES713
CPR : EN50575:2014 + A1:2016 class B2ca s1a do a1
Attenuation and Coupling loss
Frequency, MHz Longitudinal Loss, dB/100 m (dB/100 ft) Coupling Loss 50%, dB Coupling Loss 95%, dB
800 7,40 (2,30) 74 (77) 84 (88)
870 7,70 (2,40) 72 (75) 80 (83)
900 7,90 (2,40) 73 (76) 81 (85)
960 8,20 (2,50) 71 (73) 79 (81)
1700 11,60 (3,50) 67 (67) 75 (76)
1800 11,80 (3,60) 71 (71) 79 (80)
1900 12,20 (3,70) 68 (71) 73 (77)
2000 12,50 (3,80) 69 (71) 75 (78)
2100 12,80 (3,90) 70 (72) 78 (81)
2200 13,20 (4,00) 69 (71) 77 (79)
2400 13,90 (4,20) 71 (74) 79 (83)
2600 14,50 (4,40) 71 (74) 79 (82)
3400 17,10 (5,20) 67 (71) 72 (76)
3500 17,50 (5,30) 67 (71) 72 (76)
3600 17,80 (5,40) 66 (70) 71 (75)
5000 24,30 (7,40) 66 (70) 75 (78)
5200 25,60 (7,80) 67 (70) 76 (79)
5400 25,90 (7,90) 67 (69) 78 (80)
5600 27,60 (8,40) 67 (70) 78 (81)
5800 29,40 (9,00) 68 (71) 78 (81)
6000 30,20 (9,20) 68 (71) 78 (81)
@ 20°C (68°F) 
  • 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 orthogonal (below 1500 MHz) or parallel (above1500 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 +5 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.