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RF LLF 1/2"

RF LLF 1/2" SHF1

Variant:

Low loss flexible feeder cable designed for broadband transmission from sources like radio antennas, radars, GPS devices,
mobile phone antennas to distribution systems inside ships, tunnels, buildings and underground areas where RF signals
normally cannot be received.

Construction

Conductor 
Copper coated Al wire
4.80 ± 0.05 [mm]
Dielectricum 
Cellular PE
12.10 ± 0.30 [mm]
Screen 
Corrugated Cu tube
13.90 ± 0.25 [mm]
Jacket 
Black or grey
SHF1
O.D. 
16.4 ± 0.4 [mm]
Weight 
265 [kg/km]
Jacket marking 
NEK Kabel – RF LLF 1/2" 50 – SHF1 – DNV –
DD/MM/YYYY – <batch no.> – ****m

Specifications

Operating temperature normal 
-25 – +70 [°C]
Temperature @ installation 
-20 – +50 [°C]
Inductance 
0.19
[µH/m]
Peak RF voltage 
1.8 [kV]
Characteristic impedance 
50 ± 2 Ω
Peak power rating 
32 [kW]
Insulation resistance 
10 [GΩ x km]
Capacitance 
76 [pF/m]
Velocity factor 
88 [%]
Min. bending radius 
60 [mm]
Min. bending radius flexible 
125 [mm]

Norms

Halogenfree, max content corrosive and toxic gases 
IEC 60754-1 & IEC 60754-2
Material properties, insulation and sheath 
IEC 60092-360 (359)
Design and testing standards 
IEC 60096-0-1 Ed 3
IEC 61196-1-100
Flame resistance 
IEC 60332-3-24 Cat.C
Flame retardant 
IEC 60332-1-2
Smoke emission 
IEC 61034-2
Certification 
DNV
Prod.no. 
1028850-black
1028857-grey
NEK offers connectors for RF LLF 1/2": 
Male, Part No. 65402 and Female, Part No. 65464

Attenuation

Frequency [MHz] Attenuation [dB/100m ±5%] Coupling loss 95% [dB±10]
150 3.40 78
450 6.60 80
900 9.50 82
1800 13.75 88
2200 15.40 85
2400 16.00 87

VSWR

Frequency [MHz] -
260 – 480 ≤ 1.25
820 – 960 ≤ 1.25
1700 – 1860 ≤ 1.25
1900 – 2050 ≤ 1.30
2100 – 2200 ≤ 1.30
2300 – 2400 ≤ 1.30

Updated

Date Rev. Description
13.09.2017 1 Update outer diam.
10.10.2017 2 Update screen resistance
27.11.2017 3 Update design Norm
27.9.2019 4 Corr. approval
16.06.2020 5 Corr. approvals
11.01.2022 6 Attenuation/VSWR
22.12.2023 7 Norms