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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. 
16,40 ± 0,40 [mm]
Weight 
250 [kg/km]
Jacket marking 
NEK Kabel – RF LLF 1/2" 50 – SHF1 – DNV –
DD/MM/YYYY – <batch no.> – ****m

Specifications

Operating temperature normal 
-40 – +70 [°C]
Inductance 
0.19
[µH/m]
Screen resistance 
< 2.85 [Ω/km]
Peak RF voltage 
1.8 [kV]
Characteristic impedance 
50 ± 2 Ω
Peak power rating 
32 [kW]
Conductor resistance 
< 1.60 [Ω/km]
Insulation resistance 
10 [GΩ x km]
Tensile strength 
1100
[N]
Capacitance 
76 [pF/m]
Velocity factor 
0.88
Min. bending radius 
85 [mm]
Min. bending radius flexible 
135 [mm]

Norms

Halogenfree, max content corrosive and toxic gases 
IEC 60754-1 & IEC 60754-2
Material properties, insulation and sheath 
IEC 60092-360 (359)
,  NEK 606
Design and testing standards 
IEC 60096-0-1 Ed 3
IEC 61196-1-100
Flame resistance 
IEC 60332-3-22 Cat.A , IEC 60332-3-24 Cat.C
Flame retardant 
IEC 60332-1-2
Weather resistant 
ASTM G 154
Smoke emission 
IEC 61034-1 & IEC 61034-2
Oil and fuel resistant 
IEC 60811-2-1
Mineral Oils, IRM 902: 23ºC / 7 days, 70°C / 4h
Diesel,         IRM 903: 23ºC / 7 days, 70°C / 4h
UV-resistant 
ASTM G 154
CPR classification 
Dca-s1,d2,a1
Certification 
DNV
Part No. 
1028850-black,
1028857-grey
NEK offers connectors for RF LLF 1/2": 
Male, Part No. 65402 and Female, Part No. 65464

Attenuation and Power rating

Frequency [MHz] Nominal attenuation [dB/100m] max. 105% Power rating [kW]
30 1.66 6.9
50 2.01 5.3
88 2.51 4.0
100 2.65 3.7
200 3.58 2.6
300 4.10 2.1
400 4.31 1.8
450 4.93 1.7
500 5.20 1.6
700 5,92 1.3
800 6.37 1.3
900 6.79 1.25
1000 6.86 1.1
1400 9.14 0.9
1800 9.94 0.78
2000 10.50 0.76
2400 11.67 0.66
3000 12.90 0.58
3400 14.24 0.54
6000 21.5 0.39
8000 27.0 0.31

VSWR

Frequency [MHz] -
790 – 960 1.14
1700 – 1900 1.09
1920 – 2025 1.12
2110 – 2200 1.12
2300 – 2400 1.13
2515 – 2675 1.13
3300 – 3700 1.14

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