HCA158-50JB
1-5/8" HELIFLEX^® Air-Dielectric Coaxial Cable

Name: 1-5/8" HELIFLEX ® Air-Dielectric Coaxial Cable
SKU: HCA158-50JB

Rev : G | Rev date : 15 Nov 2025

HELIFLEX® 1-5/8" low loss air dielectric cable; standard, self-healing jacket

Feature / Benefits

Low Attenuation
The low attenuation of HELIFLEX® coaxial cable results in highly efficient signal transfer in your RF system.
Complete Shielding
The solid outer conductor of HELIFLEX® coaxial cable creates a continuous RFI/EMI shield that minimizes system interference.
Low VSWR
Special low VSWR versions of HELIFLEX® coaxial cables contribute to low system noise.
Outstanding Intermodulation Performance
HELIFLEX® coaxial cable's solid inner and outer conductors virtually eliminate intermods. Intermodulation performance is also confirmed with state-of-the-art equipment at the RFS factory.
High Power Rating
Due to their low attenuation, outstanding heat transfer properties and temperature stabilized dielectric
materials, HELIFLEX® cable provides safe long term operating life at high transmit power levels.
Wide Range of Application
Typical areas of application are: feedlines for broadcast and terrestrial microwave antennas, wireless cellular, PCS and ESMR base stations, cabling of antenna arrays, and radio equipment interconnects.

Applications

Wireless Communication

TV & Radio

HF Defense

Mobile Radio

Cable Solutions

Structure

Cable Type

Air-Dielectric, Corrugated

Size

1-5/8

Jacket Option

Black Self healing

Inner Conductor Diameter

18.6mm (0.73in)

Inner Conductor Material

Corrugated Copper Tube

Dielectric Diameter

39.8mm (1.56in)

Dielectric Material

Helical Polyethylene Spacer

Outer Conductor Diameter

46.6mm (1.83in)

Outer Conductor Material

Corrugated Copper

Jacket Diameter

50.4mm (1.984in)

Jacket Material

Polyethylene, PE, Bitumen Filling

Testing and Environmental

Fire Performance

Halogene Free

Installation Temperature

-25°C to 60°C (-13°F to 140°F)

Storage Temperature

-70°C to 85°C (-94°F to 185°F)

Operation Temperature

-50°C to 85°C (-58°F to 185°F)

Electrical Specifications

Impedance

50 +/- 0.5 Ω

Maximum Frequency

3 GHz

Velocity

95 %

Capacitance

70pF/m (21.3pF/ft)

Inductance

0.175µH/m (0.053µH/ft)

Peak Power Rating

270 kW

RF Peak Voltage

5200 Volts

Jacket Spark

8000 Volt RMS

Inner Conductor dc Resistance

1.06ohm/1000 m (0.33ohm/1000 ft)

Outer Conductor dc Resistance

0.39ohm/1000 m (0.13ohm/1000 ft)

Return Loss (VSWR) Performance

Standard

Phase Stabilized

Phase stabilized and phase matched cables and assemblies are available upon request.

Mechanical Specifications

Cable Weight

1.3kg/m (0.89lb/ft)

Minimum Bending Radius

180mm (7in)

Minimum Bending Radius

550mm (22in)

Bending Moment

42 (31)

Tensile Strength

1500N (337lb)

Recommended / Maximum Clamp Spacing

0.8 / 1.2 (2.75 / 4)

Attenuation @ 20°C (68°F) and Power Rating @ 40°C (104°F)

Frequency, MHz	dB per 100m	dB per 100ft	Power, kW
0.5	0.044	0.013	270
1	0.062	0.019	196
1.5	0.076	0.023	160
2	0.088	0.027	138
10	0.197	0.06	61.4
20	0.279	0.085	43.4
30	0.342	0.104	35.4
50	0.444	0.135	27.3
88	0.592	0.18	20.5
100	0.632	0.193	19.2
108	0.657	0.2	18.4
150	0.778	0.237	15.6
174	0.84	0.256	14.4
200	0.902	0.275	13.5
300	1.11	0.339	11
400	1.29	0.394	9.44
450	1.38	0.419	8.83
500	1.45	0.443	8.41
512	1.47	0.449	8.3
600	1.6	0.488	7.64
700	1.74	0.529	7.03
800	1.86	0.568	6.59
824	1.89	0.577	6.49
894	1.98	0.603	6.2
900	1.98	0.605	6.2
925	2.01	0.614	6.11
960	2.05	0.626	6
1000	2.1	0.64	5.86
1250	2.37	0.722	5.21
1500	2.61	0.797	4.75
1700	2.8	0.853	4.44
1800	2.89	0.88	4.31
2000	3.06	0.932	4.08
2200	3.22	0.982	3.89
2300	3.3	1.01	3.81
3000	3.83	1.17	3.32