HamChat
ユーティリティ
無料 · アプリ内課金 · iPad対応
HamChat is an IRC-style chat app that sends and receives text messages as modulated audio, using real ham radio digital modes. Type a message, press Enter, and it goes out your speaker as a PSK31, MFSK16, or Morse code signal. Anyone listening decodes it and sees your text appear in real time.
DIGITAL MODES
PSK31 -- The modern classic. Phase-shift keying at 31.25 baud. Fits in just 31 Hz of bandwidth. Efficient Varicode encoding means common letters transmit faster than rare ones. The gold standard for keyboard-to-keyboard ham radio chat.
PSK63 -- Same as PSK31 but twice as fast. Use when you have bandwidth to spare and want snappier conversation.
MFSK16 -- Multi-frequency shift keying with forward error correction. 16 tones, Viterbi decoding, bit interleaving. Decodes reliably at signal levels below the noise floor. The robust choice for difficult conditions.
CW / Morse -- The original digital mode, since 1895. On-off keying of a single tone with adaptive speed detection. HamChat auto-detects incoming CW speed from 5 to 40 WPM. CW transmit is free -- no purchase required.
MULTI-STREAM DECODING
Monitor up to 8 frequencies simultaneously. Each channel gets its own color-coded tab in the stream bar. Click the waterfall to tune. Messages from all channels appear interleaved in the chat log so you never miss a QSO.
WATERFALL DISPLAY
Real-time FFT spectrogram shows signal activity before text appears. See PSK31 as a narrow bright line, MFSK16 as a bouncing tone, CW as dit-dah patterns. Click anywhere to set your TX frequency.
SYSTEM AUDIO INPUT (macOS only)
Decode directly from webSDR, SDR software, or any other audio source without hardware. Uses ScreenCaptureKit to tap all system audio output -- bypasses the built-in mic's noise cancellation entirely.
HOW TO USE
Note that the noise suppression algorithms on modern Apple devices will fight you when transmitting data over audio. A CW or PSK signal sounds like noise, and not like a human voice, so the MacBook, iPhone or iPad dutifully tries to filter it out. It's highly recommended to use a cheap USB-C sound card to receive and transmit.
Across a room: One device transmits through speakers, another listens on the mic. No radio needed, no license required.
With a radio: Connect via USB audio interface for clean digital audio. HamChat becomes a full digital mode terminal for your transceiver.
From the web: Use System Audio input to decode live signals from webSDR receivers around the world.
THE VIBE
Hackerman aesthetic. Amber phosphor text on anthracite black. Monospace everything. Think 1985 BBS terminal that somehow has a waterfall display.
TECHNICAL DETAILS
- Native Swift/SwiftUI -- no Electron, no web views, no external dependencies
- Apple Accelerate/vDSP for all DSP and FFT processing
- Costas loop carrier recovery with AFC for PSK modes
- Rate-1/2 convolutional FEC with Viterbi decoder for MFSK16
- Adaptive CW speed tracking with bimodal histogram classification
- 44100 Hz sample rate, real-time processing
PRIVACY
No accounts, no analytics, no network calls, no tracking. Audio is processed locally in real time. Nothing leaves your device... except the audio you transmit.
PRICING
Receive on all modes: free, always.
CW transmit: free, always -- it's the OG mode.
PSK31/PSK63/MFSK16 transmit: one-time purchase.
Built by a ham radio operator. 73!
評価とレビュー
このアプリは、概要を表示するには評価件数やレビュー件数が不十分です。
デベロッパである“Jeroen Rombouts”は、アプリのプライバシー慣行に、以下のデータの取り扱いが含まれる可能性があることを示しました。詳しくは、 デベロッパプライバシーポリシー を参照してください。
データの収集なし
デベロッパはこのアプリからデータを収集しません。
アクセシビリティ
デベロッパは、このアプリがサポートしているアクセシビリティ機能をまだ示していません。 詳しい情報
情報
- 販売元
- Jeroen Rombouts
- サイズ
- 2.8 MB
- カテゴリ
- ユーティリティ
- 互換性
iOS 17.0以降が必要です。
- iPhone
iOS 17.0以降が必要です。 - iPad
iPadOS 17.0以降が必要です。 - Mac
macOS 14.0以降とApple M1以降のチップを搭載したMacが必要です。 - Apple Vision
visionOS 1.0以降が必要です。
- 言語
- 英語
- 年齢制限
4+
- 4+
- 含む
メッセージとチャット
- アプリ内課金
あり
- Unlock TX Modes ¥600
- 著作権
- © Strange Loop Software
