Readability, Strength, Tone reporting for CW, phone, and digital. Works offline after your first visit.

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RST Signal Report Guide

Readability, strength, and tone reference for signal reports.

R — Readability (1–5)

1Unreadable
3Readable with difficulty
5Perfectly readable

S — Strength (1–9)

1Faint
5Good
9Extremely strong

T — Tone (1–9, CW only)

1Very rough note
9Perfect tone

Phone/SSB: RS only (e.g. 59). CW: RST (e.g. 579). Digital: often 599 or RS equivalent. Be honest — helps ops adjust power and antennas.

Common questions

What is an RST report?

Readability, Strength, Tone — signal report format on HF and CW nets.