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Chameleon Knowledge Base · The Complete Online HF Antenna Handbook

What Is a Type N Connector?

Learn what a Type N connector is and why it is preferred for high-frequency and low-loss RF applications.

Getting Started HF Fundamentals Reviewed 2026-07-14
Short Answer: Learn what a Type N connector is and why it is preferred for high-frequency and low-loss RF applications.

Explanation

Overview The Type N connector is a precision constant-impedance RF connector designed for excellent electrical performance from HF through microwave frequencies. It is widely used in commercial communications, military systems, test equipment, and high-performance amateur radio installations. Advantages Constant 50-ohm impedance. Excellent VSWR performance. Low insertion loss. Weather-resistant threaded coupling. Excellent microwave performance. Typical Applications VHF/UHF base stations. Microwave systems. Network analyzers. Commercial communications. Military communications. Comparison with PL-259 Although both connectors perform well on HF, Type N connectors maintain much better impedance characteristics as operating frequency increases. Applied to Chameleon Products Some specialized Chameleon products and laboratory test equipment may use Type N connectors where improved high-frequency performance or environmental sealing is desirable. Related Articles What Is a PL-259 Connector? What Is an SO-239 Connector? What Is Characteristic Impedance? What Is Return Loss? Related Products Selected Chameleon Products

The exact result depends on the complete station: frequency, geometry, feed line, matching network, return-current path, environment, operating power, and the reference plane of any measurement. A low SWR establishes an impedance relationship at that point; it does not by itself prove efficiency, radiation pattern, compatibility, or safety.

What to Verify

  • Use the newest official product guide or primary service documentation.
  • Confirm the exact model, revision, components, configuration, and operating conditions.
  • Begin tests at low power and change one variable at a time.
  • Do not infer compatibility from connector or thread fit.

Learn Next

  • Antenna Selection: A Mission-First Decision Guide
  • Engineering Design Tradeoffs in Portable HF Antennas
  • Antenna Measurement Reference Planes
  • Understanding Common-Mode Current

Source note: Independently synthesized with reference to The ARRL Handbook for Radio Communications, 99th edition (2022), and The ARRL Antenna Book for Radio Communications, 24th edition (2019). Verify changing regulations, services, software, specifications, availability, and safety requirements against current primary sources.