PhosphorSWL is a shortwave broadcast schedule browser and numbers station reference for iPhone, rendered through the green phosphor glow of a Cold War signals intelligence console. Your phone becomes a monitoring station — a frequency dial, a schedule grid, a station database, and a curated dossier of every numbers station still whispering into the void.
BROADCAST SCHEDULES
Browse over 10,000 shortwave broadcast entries from the EiBi database — the most comprehensive freely-licensed shortwave schedule resource in existence. Filter by frequency band, time, language, and target area. See what's on air right now. Every broadcast entry includes transmission times, languages, target areas, transmitter sites, and signal path maps showing the great circle route from transmitter to target.
NUMBERS STATIONS
A curated database of known numbers stations — active, historic, and legendary. ENIGMA designators, frequencies, schedules, operators, signal characteristics, and full station profiles. From E06 "Russian Man" still counting for the GRU, to the ghost of E03 "The Lincolnshire Poacher" silenced in 2008 after decades broadcasting from RAF Akrotiri.
- The Buzzer (UVB-76) on 4625 kHz
- The Pip, The Squeaky Wheel
- Cuban DGI digital modes
- Chinese military networks
- Polish intelligence transmissions
- SVR polytone MFSK systems
This is not a decoder. It is a field manual for the darkest inhabitants of the radio spectrum.
FEATURES
- 10,000+ shortwave broadcast schedule entries from EiBi
- Curated numbers station database with full station profiles
- Band scanner — scroll the entire shortwave spectrum
- Search and filter by frequency, station, language, band, and time
- Signal path maps showing great circle TX-to-target routes
- Live HF propagation conditions from NOAA (Kp index, band-aware)
- ON AIR indicators for currently active broadcasts
- Green, amber, and red phosphor CRT themes
- Red mode preserves scotopic dark adaptation for night listening
- Automatic schedule refresh from EiBi
- Favourites for bookmarking stations and broadcasts
- No accounts, no subscriptions, no ads, no tracking
DATA SOURCES
- Broadcast schedules: EiBi Shortwave Schedule Database
- Numbers station data: curated from Priyom.org, ENIGMA 2000, Numbers & Oddities, Signal Identification Wiki
- HF propagation: NOAA Space Weather Prediction Center (public domain)
SUPPORT
Need help? Have a question, bug report, or feature request?
- Ask a question — get help with using PhosphorSWL
- Report a bug — let us know if something isn't working
- Request a feature — suggest improvements or new functionality
You can also browse existing issues to see if your question has already been answered.