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---
name: pwn-sdr-decoder-rtty
description: Drive PWN::SDR::Decoder::RTTY from pwn_eval.
license: MIT
allowed-tools: [pwn, pwn_eval]
metadata:
bundled: true
generated: true
module: PWN::SDR::Decoder::RTTY
source: pwn/sdr/decoder/rtty.rb
---
# PWN::SDR::Decoder::RTTY
Pure-Ruby RTTY (Radioteletype, ITA2/Baudot) decoder. Amateur RTTY is 45.45 baud 2-FSK with a 170 Hz shift; on USB the convention is mark ≈ 2125 Hz, space ≈ 2295 Hz in the demodulated audio. This module runs a per-symbol Goertzel on both tones, frames 1-start / 5-data / 1.5-stop asynchronously, and decodes ITA2 via DSP::BAUDOT_LTRS/FIGS. No `minimodem`, no `sox`.
## When to use
Call `PWN::SDR::Decoder::RTTY` from `pwn_eval` when the task needs this module.
Do not reimplement it in shell.
## Methodologies
Generated from `pwn/sdr/decoder/rtty.rb`. Prefer the public class methods below.
Class methods take `(opts = {})` and read `opts`.
## How to call
```ruby
PWN::SDR::Decoder::RTTY.help
PWN::SDR::Decoder::RTTY.detect(opts)
```
## Public methods
- `detect`
- `decode`
- `authors`
- `help`
## Source
`pwn/sdr/decoder/rtty.rb`
## Verification
`PWN::SDR::Decoder::RTTY.respond_to?(:detect)` after the
module is loaded. Read the source for parameter names.
