Purpose: Isolated test of an independently-written RTTY AFSK demodulator + ITA2/Baudot framer against a synthesized known signal. This page does not use the microphone and is not connected to the main decoder console.
Bundled sample: RTTY TEST 12345 — 45.45 baud, 170 Hz shift, mark 2125 Hz, space 2295 Hz, ITA2, 1 start / 5 data / 1.5 stop, normal polarity.
Audio Source
No sample loaded.
Transport
Status: idle
Demodulator Diagnostics
Mark frequency— Hz
Mark energy—
Space frequency— Hz
Space energy—
Current mark/space—
Configured baud—
Recovered bit timing—
Framing state—
Last ITA2 value—
Last raw bits—
LTRS/FIGS stateLTRS
Framing errors0
Characters decoded0
Confidence0%
Expected vs Actual
Expected
—
Actual decoded
— awaiting decode —
Character Stream
— no characters yet —
Diagnostic Log
— no events yet —
RTTY demodulation powered by an independently-written module (coherent Goertzel tone detection + majority-vote bit recovery + ITA2/Baudot framing). No third-party decoder code is vendored; only factual ITA2 protocol tables are used. See src/lib/rtty-test/.