Quarter-Inch (1/4") corrugated coaxial cable is a flexible, light duty jumper cable designed for short interconnections within large antenna systems. Quarter-Inch jumper cables are one of three main cable types used in Distributed Antenna Systems.

While designs can vary between manufacturers, quarter-inch cables always maintain a 9.1 mm outer diameter and use a 2.4 mm diameter inner conductor. This cable uses a solid corrugated copper outer conductor providing 110 dB of shielding effectiveness, and most importantly meets very low PIM targets.

1/4" quarter inch corrugated coaxial cable FSJ1-50

RF Specification

Min. Frequency
0 GHz
Max. Frequency
18.6 GHz
Shielding Effectiveness
> 110 dB
Capacitance
76 pF/m
Impedance
50 Ω
Inner Conductor Resistance
9.80 Ω/km
Outer Conductor Resistance
7.20 Ω/km
Velocity
88%
Peak Power
6.40 kW
dc Test Voltage
1600 V
RF Operating Voltage
830 Vrms

Frequency Test Data

Frequency Attenuation
1000 MHz
0.195 dB/m

Physical Specification

Colour
Black
Min. Bend Radius Static
38 mm
Min. Bend Radius Dynamic
76 mm
Min. Operating Temperature
-55 °C
Max. Operating Temperature
85 °C
Weight (g/m)
90 g

Cable Layers

Layer Diameter Materials
Inner Conductor
2.40 mm
Solid Copper
Dielectric
6.50 mm
Foamed Polyethylene (EPE)
Outer Conductor
7.50 mm
Corrugated Copper Tube
Outer Jacket
9.10 mm
Polyethylene (PE)