Lifetime Connectivity

NM-HCA78-020
N Male Connector for 7/8" Coaxial Cable, RAPID FIT™ Sealing compound

Rev : F | Rev date : 10 Apr 2026

Radio Frequency Systems line of high performance coaxial cable connectors are designed specifically to provide the highest quality connector-cable interface while simplifying and speeding up the attachment of connectors to HELIFLEX® coaxial cables. RFS connectors are fully tested for mechanical and electrical compliance specifications. They are available in all popular cable sizes in a variety of mating interfaces. The N connector is one of the most common RF connector types. N type connectors from RFS will be delivered with a non-slotted outer conductor contact sleeve and a special gasket. Due to a special design of the coupling nut (without spring ring) N connectors can be tightened with increased torque. This increases the contact pressure.

Features / Benefits

  • Excellent gas tightness, Overpressure for increased voltage handling is maintained throughout the system
  • Robust Mechanical Design, Superior and consistent performance guarantees outstanding system characteristics.
  • Extremely low reflection factor, Outstanding low reflection factor improves overall system performance and margin and reduces mismatch losses
  • Totally Waterproof according to IP 68, Assures safe, long term operation in the harshest of environments. System tightness doesn't have to rely on overpressure from dehydration equipment.
  • RoHS (EU) and CRoHS (China) compliant i.e. can be used on a global basis
nm-hca78-020.png
Structure
Cable Type Air Dielectric
Cable Size 7/8"
Model Series HCA78-50 Series
Connector Interface Size N
Connector Interface Gender male
Mechanical Specifications
Connector Length 80mm (3.15in)
Connector Outer Diameter 39.5mm (1.55in)
Sealing Volume 5cm³ (0.169ounces)
Inner Conductor Material / Coating Copper-alloy / Silver
Outer Conductor Material / Coating Copper-alloy / Silver
Sealing Volume 5cm³ (0.169ounces)
Sealing Method

Sealing compound ¹ )

Electrical Specifications
Nominal Impedance 50 Ω
Accessories
Wrench Size Connector Front Part 36mm (1-7/16in)
Wrench Size Connector Rear Part 32mm (1-1/4in)
Note

¹) The sealing compound must be ordered separately.

Installation Instruction

Installation Instructions

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