Monitor real-time amateur radio activity
Access real-time data for amateur radio frequencies. Filter by frequency, mode, call prefix, country, or ITU zone. View contacts and activity on a map. Receive alerts for new contacts. Share data via email or social media.
Showing 201–220 of 1,000 ranked alternatives.
AeroKitPro LLC
Calculate ACN and PCN values
Calculate aircraft pavement strength using ICAO standards. Input aircraft weight and pavement type to determine acceptable load limits. Compare results against established thresholds for runways, taxiways, and aprons.
Netzberater UG (haftungsbeschraenkt)
Detect calls, block spam, build your profile
Identify unknown calls during ringing. Block unwanted calls and SMS spam. Build a personal call blacklist. Look up unknown phone numbers. Rate callers for accuracy.
Black Cat Systems
Audio frequencies displayed for analysis.
The app displays audio frequencies up to 20 kHz on an iPad, iPhone, or iPod Touch. Users can adjust frequency span, FFT size, and apply filtering for smoothing.
Black Cat Systems
View ham radio PSK31 transmissions now.
The app allows users to view ham radio PSK31 transmissions on an iPad. Users can place their iPad near a radio, tune to a PSK31 frequency, and see decoded text along with a waterfall display of the audio spectrum.
Ibrahim Al-Sammarraie
Udio signals with custom parameters
Udio signals with adjustable parameters and frequency up to 20 kHz. Create single signals, sweeps, or merged signals. Control duty cycle, frequency, and waveform type. Export generated audio files.
Georgi Gerganov
Decode audio to text in real-time
Decode Morse code audio into text by accessing the microphone and placing the device near the audio source. The automatically detects frequency and speed, displaying real-time text in a bottom panel. Use the lock icon to secure the interface.
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.