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◀ ALL APPS / SHORT WAVE UTILITIES

PhosphorRTTY

RTTY DECODER
Real-time RTTY signal decoder. Shortwave radio teletype via your iPhone microphone.
RTTY decoder app for iPhone. Decode radioteletype signals from shortwave radio in real time using your microphone. Baudot 45.45 baud with real-time waterfall display — essential for ham radio and SWL.
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Spectrum painting for amateur radio. Transmit and decode images painted onto SDR waterfall displays.
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Real-time Morse code decoder. CW signal detection via your iPhone microphone with automatic frequency and speed tracking.
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PhosphorCalc RF CALCULATOR
Ten RF and antenna calculators for amateur radio. Dipole lengths, path loss, SWR, link budgets, impedance matching. No network required.
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Real-time Hellschreiber decoder. Feld-Hell signals via your iPhone microphone — the oldest digital mode still in use, where your own eyes do the decoding.
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Real-time HF radio propagation monitor. NOAA space weather data translated into band-by-band conditions.
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PhosphorSSTV SSTV CODEC
Slow Scan Television encoder and decoder. Encode or decode SSTV images via your iPhone microphone — ten modes including Scottie, Martin, and Robot.
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PhosphorSWL SWL BROWSER
Shortwave broadcast schedule browser and numbers station reference. EiBi database, scanner, and Cold War SIGINT aesthetic.
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PhosphorTEX NAVTEX DECODER
Real-time NAVTEX maritime-safety decoder. 518 kHz gale warnings, SAR alerts, ice reports — CCIR-476 SITOR-B via your iPhone microphone.
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VT220 9600,8N1 BUF:64K SNR:NOMINAL