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RL412-50U
4-1/2" Unflanged Rigid Line

Rev : 02 | Rev date : 31 May 2022

RFS manufactures a range of unflanged and flanged rigid coaxial transmission lines and accessories to meet all commonly used EIA/IEC standards from 1-5/8" to 8-3/16".
4-1/2" unflanged rigid line is a rigid coaxial transmission line, ideal for indoor connections between RF broadcasting equipment.

 

FEATURES / BENEFITS

  • Inner and outer conductors are made from the highest purity copper (99.95% for inner, 99.9% for outer) for minimum attenuation and lowest operating temperature.
  • Manufactured from hard drawn copper, milled to exact dimensions to ensure strict compliance with specifications and stable characteristic impedance
  • All spacers/insulators are of virgin PTFE for highest physical and electrical insulation properties.
  • The outer conductor is painted for a high quality long lasting finish, which also aids in heat dissipation


4 1/2" Unflanged Rigid Line

Technical features

Structure

Product LineRigid Line
Product TypeUnflanged rigid line, copper
Size4-1/2"
Feeder TypeRigid coaxial transmission line (unflanged)
Outer Conductor MaterialC110000 Copper, 99.9% pure
Outer Conductor OD mm (in)106 (4.173)
Outer Conductor ID mm (in)103 (4.055)
Inner Conductor MaterialC102000 Copper, 99.95% pure
Inner Conductor OD mm (in)44.8 (1.764)
Inner Conductor ID mm (in)42.8 (1.685)
Dielectric MaterialAir, with PTFE spacers

Electrical Specifications

Maximum Frequency MHz1230
ImpedanceΩ50 +/- 0.5
Relative Propagation Velocity%99.8
Peak Power Rating kW1586
RF Peak VoltagekV12.6

Mechanical Specifications

Weight kg/m (lb/ft)5.5 (3.69)
FinishAcrylic paint
Recommended clamp spacing m (ft)2 (6.5)

Ordering Information

Standard Lengths mm (ft)2750, 5500 (9, 18) [Note 3]

Environmental Specifications

Ambient Temperature Range °C(°F)-40 to + 60 (-40 to 140)
Humidity95%, non condensing

Attenuation and Power Rating

Frequency, MHzAttenuation, dB/ 100mAttenuation, dB/ 100ftAverage Power kW
(Note 1)
Average Power kW
(Note 2)
500.170.052119159
880.220.06890120
980.240.07285114
1080.250.07681108
1500.290.0896992
1740.320.0966485
2020.340.1045979
2400.370.1135473
3000.410.1264865
4000.480.1464256
4700.520.1583952
5000.530.1633850
5200.550.1663749
6000.590.1783446
6650.620.1883344
7190.640.1953142
8000.680.2063040
8200.680.2092939
8620.700.2142938

Attenuation at 20°C (68°F)
Mean power rating at 40°C (104°F) ambient temperature
Note 1. Outer temp rise 23°C (73°F), Inner temp rise 60°C (140°F)
Note 2. Outer temp rise 30°C (86°F), Inner temp rise 80°C (176°F)
Note 3. Custom lengths are available on request

Elbows

Elbow Model NoRL412-50U-EL
Elbow Type4-1/2" Unflanged Elbow - male with coupling sleeves
Elbow Weightkg (lb)2.39 (5.27)

Accessories

Accessory Model NoRL412-50U-STRAD41U-NRL412-50-FLARL412-50-IJKRL412-50-SHR
Accessory DescriptionStraight Coupling - Inner & Outer4-1/2"u/f - Type N
Adaptor
Flange Adaptor - Clamp TypeIEC Inner Joining KitSuspension Hanger
Accessory Weight kg (lb)0.7 (1.54)2.41 (5.31)1.36 (3.0)1.06 (2.34)1.15 (2.54)

External Document Links