SimpleSSTV
Utilitaires
Gratuit · Achats intégrés
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
• 14 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
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
• 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
Note: It's super important to get a clean audio signal into the decoder. There's a new help section in settings with audio setup advice, USB adapter recommendations, and decode troubleshooting.
LIVE CAMERA MODE
• Real-time camera feed with front/back camera switching
• Three trigger modes: Continuous, Motion-triggered, or Periodic interval
SUPPORTED MODES (14 total)
• Martin M1 (114s), Martin M2 (58s)
• Scottie S1 (110s), Scottie S2 (71s), Scottie DX (269s)
• Robot 36 (36s), Robot 72 (72s
• PD50, PD90, PD120, PD160, PD180, PD240, PD290
AI CARD GENERATOR
• Generate custom QSL calling cards with AI-powered image generation
• 8 built-in styles or write your own prompt
• Callsign and greeting rendered directly on the card
• Tap any recent card to reload it with all original settings
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 14 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. Buy once, use forever. We do not use, sell or share your data for advertising or marketing purposes. Note however that if you use the optional QSL card generator, your prompts will be sent to Google's servers for image generation.
Be aware: Encoded images are audio signals — anyone receiving the audio can decode them!
REQUIREMENTS
• iOS 18 or later
• Camera access for live mode
• Microphone access for live decode
This simple, no nonsense utility was built by a ham radio operator for ham radio operators. 73!
- La note globale de cette app a été réinitialisée récemment.
- 7 New SSTV Modes
- Performance Improvements
- Bug Fixes
Le développeur Jeroen Rombouts a indiqué que les pratiques de l’app en matière de confidentialité peuvent inclure le traitement des données tel que décrit ci‑dessous. Pour en savoir plus, consultez la politique de confidentialité du développeur .
Données non collectées
Le développeur ne collecte aucune donnée avec cette app.
Accessibilité
Le développeur n’a pas encore indiqué quelles fonctionnalités d’accessibilité sont prises en charge par cette app. En savoir plus
Informations
- Taille
- 4,6 Mo
- Catégorie
- Utilitaires
- Compatibilité
Nécessite iOS 18.0 ou version ultérieure.
- iPhone
Nécessite iOS 18.0 ou version ultérieure. - iPad
Nécessite iPadOS 18.0 ou version ultérieure. - Mac
Nécessite macOS 15.0 ou version ultérieure. - Apple Vision
Nécessite visionOS 2.0 ou version ultérieure.
- iPhone
- Langues
Français et 9 de plus
- Français, Allemand, Anglais, Arabe, Chinois simplifié, Espagnol, Néerlandais, Polonais, Portugais, Turc
- Âge
4+
- 4+
- Contient
Contenu généré par les utilisateurs
- Achats intégrés
Oui
- 120 AI Card Credits 9,99 €
- 30 AI Card Credits 4,99 €
- 10 AI Card Credits 1,99 €
- Remove or change encoder watermark 2,99 €
- Fournisseur
Jeroen Rombouts
- Le fournisseur Jeroen Rombouts s’est identifié comme commerçant de cette app et a confirmé que ce produit ou service est conforme à la législation de l’Union européenne.
- Adresse
Strange Loop Software
Postbus 3035
2601DA Delft
Pays-Bas - Téléphone
+31 634915704 - Adresse e‑mail
info@strangeloop.nl
- Copyright
- © Strange Loop Software

