Cablewave-RFS HCA78-50J 7/8" HELIFLEX® Air-Dielectric Coaxial Cable

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
Applications		Wireless Communication	TV & Radio	HF Defense	Mobile Radio	Cable Solutions

STRUCTURE
Cable Type		Air-Dielectric, Corrugated
Size		7/8
Jacket Option		Black
Inner Conductor Diameter	mm (in)	9 (0.35)
Inner Conductor Material		Copper Tube
Dielectric Diameter	mm (in)	20.2 (0.79)
Dielectric Material		Helical Polyethylene Spacer
Outer Conductor Diameter	mm (in)	25.5 (1)
Outer Conductor Material		Corrugated Copper
Jacket Diameter	mm (in)	28 (1.103)
Jacket Material		Polyethylene, PE

TESTING AND ENVIRONMENTAL
Fire Performance		Halogene Free
Flame Retardant Jacket Specifications		Meets the requirements according to: IEC60754-1, IEC60754-2
Installation Temperature	°C(°F)	-40 to 60 (-40 to 140)
Storage Temperature	°C (°F)	-70 to 85 (-94 to 185)
Operation Temperature	°C(°F)	-50 to 85 (-58 to 185)

ELECTRICAL SPECIFICATIONS
Impedance	Ω	50 +/- 0.5
Maximum Frequency	GHz	3
Velocity	%	93
Capacitance	pF/m (pF/ft)	71 (21.6)
Inductance	uH/m (uH/ft)	0.178 (0.054)
Peak Power Rating	kW	73
RF Peak Voltage	Volts	2700
Jacket Spark	Volt RMS	8000
Inner Conductor dc Resistance	Ω/1000 m (Ω/1000 ft)	1.1 (0.34)
Outer Conductor dc Resistance	Ω/1000 m (Ω/1000 ft)	0.88 (0.27)
Return Loss (VSWR) Performance		Standard

Min. Return Loss (Max. VSWR)	dB (VSWR)	Typical 20.8dB (1.2 VSWR) or better within the operation bands of most global frequency ranges. Premium also available. Contact factory for options in your specific frequency band.

Phase Stabilized		Phase stabilized and phase matched cables and assemblies are available upon request.
Temperature & Power		Standard
MECHANICAL SPECIFICATIONS
Cable Weight, Nominal	kg/m (lb/ft)	0.68 (0.46)	kg/m (lb/ft)	0.68 (0.46)
Minimum Bending Radius, Single Bend	mm (in)	100 (4)	mm (in)	100 (4)
Minimum Bending Radius, Repeated Bends	mm (in)	250 (10)	mm (in)	250 (10)
Bending Moment	Nm (lb-ft)	27 (20)	Nm (lb-ft)	27 (20)
Tensile Strength	N (lb)	1600 (360)	N (lb)	1600 (360)
Recommended / Maximum Clamp Spacing	m (ft)	0.5 / 0.9 (1.8 / 3)	m (ft)	0.5 / 0.9 (1.8 / 3)