FT Ham vs SimpleSSTV

FT Ham – FT8/FT4 Decoder & Audio Transmitter for Amateur Radio FT Ham puts a complete FT8/FT4 decoder and audio encoder/transmitter in your pocket. Decode, reply, and log QSOs directly from your iPhone — all in real time, fully offline. What the app does for you: - Live Waterfall: frequency vs time spectrogram with color intensity and vertical labels for each decoded signal. - Real-time Decoding: receive FT8 and FT4 audio via microphone or connected audio interface and see callsigns, reports, and SNR instantly. - Transmit (Encode & Play): generate FT8/FT4 audio for CQ, reports, RRR, and 73, aligned to correct UTC slots and played through speaker or radio interface. - Auto QSO Sequencing: detects CQ, prepares replies, respects UTC timing and even/odd cycles, retries if needed, and can complete QSOs automatically. - Manual Control Always Available: full manual message selection and intervention at any point. - Predefined Messages & Composer: CQ, DX→ME, reports, RRR, and 73 — automatically filled with your callsign and locator, fully customizable. - Logbook & ADIF Export: automatically log completed QSOs and export to standard ADIF for external logging software. - Contact Map: visualize logged QSOs and geographic coverage in a single view. Privacy & Safety: - All decoding and signal processing runs entirely on your device. No internet connection required. - FT Ham does not collect or share personal data. All settings and logs remain local on your device. - Audio output may be connected to external radios; always comply with local amateur radio regulations. - Payments are handled by Apple or third-party services; FT Ham never receives payment details. Legal & Licenses: - FT Ham code is released under the MIT License. - Third-party library licenses are included in-app.

SimpleSSTV is a native iOS app for encoding, decoding, and live-transmitting slow-scan television (SSTV) signals — the method ham radio operators use to share images over audio frequencies. Slow-scan television converts images to audio tones. Each pixel's brightness becomes a specific frequency between 1500-2300 Hz. Sync pulses at 1200 Hz mark line boundaries. The result is an audio signal you can transmit over any voice-capable radio, or record for later playback. SSTV has been used by amateur radio operators since the 1950s. It's still actively used today on HF bands, VHF repeaters, and for receiving images from the International Space Station. ENCODING (Image → Audio) • Load any image from your photo library, camera, or Files • Automatic resize and crop to SSTV resolution • 21 supported modes covering all major SSTV formats • Real-time encoding with progress visualization • Play audio directly through speakers for VOX-triggered transmission • Export to WAV or M4A for later use • Optional FSK ID and CW ID (Morse code) callsign transmission • Test pattern generator for signal testing LIVE CAMERA MODE • Real-time camera feed with front/back camera switching • Three trigger modes: Continuous, Motion-triggered, or Periodic interval • Adjustable motion sensitivity with adaptive background model • Captures and encodes directly from camera to audio • Perfect for portable operation, field day, and unattended stations DECODING (Audio → Image) • Load WAV, M4A, or MP3 audio files containing SSTV signals • Live microphone capture for real-time SSTV reception • Automatic mode detection via VIS code identification • Progressive line-by-line image preview during decode • FSK callsign detection from received signals • Precision audio trimming with dual-view waveform editor • Re-decode saved images with different mode, sync offset, or slant correction • Handles real-world signal imperfections: timing drift, noise, sample rate variations • Optional decode watermark stamps mode, timestamp, and callsign on received images • Waterfall spectrogram display shows signal frequency over time SUPPORTED MODES (21 total) • Martin M1, M2, M3, M4 • Scottie S1, S2, S3, S4, DX, DX2 • Robot 36, Robot 72, Robot BW8 • PD50, PD90, PD120, PD160, PD180, PD240, PD290 • Wraase SC2-180 ISS SSTV EVENTS • Get notified when the International Space Station transmits SSTV images • Automatic alerts before and during events, with frequency, mode, and callsign info • Info card on the decode tab with event details and countdown FAQ & SETUP TIPS • Practical advice on audio setup and USB adapters • Decode quality troubleshooting • Quick reference for all 21 SSTV modes IMAGE LIBRARY • Automatic saving of encoded and decoded images • Grid view with full preview, metadata, and sharing • Re-decode any saved image with different settings • Filter by encoded or decoded 10 LANGUAGES Available in Arabic, Chinese (Simplified), Dutch, English, French, German, Polish, Portuguese (BR), Spanish, and Turkish — with full right-to-left support. PRIVACY No accounts, no analytics, no tracking. Your images and audio stay on your device. Free to encode and decode. Optional one-time Pro purchase unlocks watermark customization and Listening Station Mode. We do not use, sell or share your data for advertising or marketing purposes. Be aware: Encoded images are audio signals — anyone receiving the audio can decode them! REQUIREMENTS • iOS 17.6 or later • Camera access for live mode • Microphone access for live decode Built by a ham radio operator for ham radio operators. 73!