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Chameleon Knowledge Base · The Complete Online HF Antenna Handbook

What Is a Signal Report?

Learn what a signal report is, how the RST system works, and why accurate reports are important in amateur radio.

HF Operating Practices Basic Operating Procedures Reviewed 2026-07-14
Short Answer: Learn what a signal report is, how the RST system works, and why accurate reports are important in amateur radio.

Explanation

Overview A signal report is an evaluation of how well another amateur radio station's transmission is being received. Signal reports help operators assess propagation conditions, station performance, and communication quality. The most common reporting system used on amateur radio is the RST System , which stands for Readability, Signal Strength, and Tone . The RST System Component Meaning Range R Readability 1–5 S Signal Strength 1–9 T Tone (CW only) 1–9 Examples 59 — Excellent readability and very strong signal (voice). 579 — Good CW readability with excellent tone. 44 — Readable but weaker signal. Good Operating Practice Provide honest reports when practical. Remember that propagation changes continuously. Different stations may receive the same signal differently. Contest exchanges often use standardized reports regardless of actual conditions. Applied to Chameleon Products Operators using Chameleon antenna systems often compare signal reports before and after antenna changes to evaluate installation improvements and overall station performance. Related Articles What Is a CQ Call? What Is HF Propagation? What Is SWR? What Is a DX Contact? Related Products All Chameleon HF Anten

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.