Selcall Selective Calling Tone vs GAB Aviation Tools

SelCall generates Selective Calling Tones. Select your tone type from the extensive selection of available modes, then touch the button for each tone you wish to send. You can even queue up tones and have them sent in a burst, if you wish. The following tone types can be generated: DTMF CCIR1 CCIR7 PCCIR EIA EEA CCITT EURO NATEL VDEW MODAT ZVEI1 ZVEI2 ZVEI3 PZVEI DZVEI PDZVEI ICAO ICAO SELCALL 32 CTCSS CODAN Touch the button on the upper right corner to get a list of SelCall tone modes, and select the mode you wish to use. Then touch the button for each tone you wish to generate. If you turn the switch off, you can queue up several tones (they will be displayed to the left of the switch) and then turn the switch back on to play them. Any tones that you played by turning the switch on can be repeated by tapping the RPT/Repeat button. You can also store commonly used tone sequences. Tap on the Mem button to bring of the list of memory entries, which will by empty at first. To add an entry, tap the Edit button, then the green plus sign to add an entry, which will get a default name of Untitled. Tap Done, then tap on the Untitled entry to edit it. You can change the name, as well as the tone keys to be sent. To send an entry, tap the send button. It will be sent (or stored in the buffer if the switch is off). It will also be placed in the repeat buffer, so you can tap RPT/Repeat to re-send it. The duration of tones and gap between them can be customized for most modes. Enter the values in milliseconds. The maximum allowed values are 500 milliseconds. In CTCSS mode, touch the button for the tone that you wish to continuously generate. There is a switch which turns the tone on and off, and when on, the tone will continuously play, even when you switch to another tone mode, so you can combine CTCSS with other tone modes. In CODAN mode, adjust the center frequency if necessary, select the priority of the message, and dial in the ID to call, and your ID. Then tap Send. Sequence mode allows you to create sequences of arbitrary tones. First, you will see a list of your sequences. You can use Edit to add additional sequences, delete a sequence, or re-arrange them. Three sample tone sequences are created for you, as examples. To rename a sequence, tap on it and edit the text. To edit to send a sequence, tap on the disclosure indicator at the extreme right. Each sequence is a set of lines, each of which has two numbers. The first is the frequency of the tone in Hertz, the second is the duration of the tone in milliseconds. One second is 1,000 milliseconds. Do not put an additional space between the numbers, after them, before them, or use any other characters, or the sequence will not correctly play. You can play two tones at the same time, in that case, three numbers must be entered on each line, the first two are the tone frequencies, the third is the duration. The first sample sequence, Seq 1, sends eight tones. The first is 1200 Hz for 550 milliseconds, then there are six more tones: 1100, 1000, 1100, 1000, 1100, 1000 Hz, each 200 milliseconds. Then a final tone of 1500 Hz for 350 milliseconds. To play a sequence, tap Send. To edit a line, tap on it and edit the text. You need a single space between the frequency and length. You can use Edit to add additional lines, delete a line, or re-arrange them.

GAB Aviation Tools brings together aviation calculators, flight planning, live traffic, weather, and training tools for pilots, flight crew, students, instructors, and aviation enthusiasts. Prepare for flights, practise procedures, explore nearby aircraft, and track your aviation journey in one easy-to-use app. **Key Features** **Live ADS-B & OGN Traffic** - Live aircraft positions from ADSB.lol - Optional Open Glider Network traffic - Callsign, registration, aircraft type, altitude, speed, and track when available - Filters, favorites, and adjustable map labels - Search by callsign, registration, or ICAO24 - Registration lookup with automatic ICAO24 identification - Callsign airline and registered owner when available - Best-effort published routes - Follow aircraft with a current-flight ground track when available - Adjustable refresh settings and clear source attribution **Airport Log & Route Tracking** - Log visited airports and flown routes - iCloud sync across devices - Statistics and filters by year, aircraft type, airport, and route - Interactive maps with offline airport details - View unique routes from a selected airport - Great-circle mapping and distance calculations - Import and export for backups and sharing **Nighttime & Flight Planning** - Estimate nighttime along a great-circle route - Interactive map and timeline showing day, twilight, and night - Sunrise, sunset, and night transitions along the flight - World overview for long routes and offline use - Flight time, descent, and Top-of-Descent calculators - Turn radius and bank angle calculations **Pilot Brief & Visual Planning** - Condensed airport and weather information - Color-coded wind information - VFR traffic pattern visualization - Beam calculator with approach visualization - Wind calculator visuals **Duty Day Calculator** - Customizable crew rules and limitations - UTC, local time, and countdown formats - Saved profiles and configurations - Duty, FDP, and reporting calculations - Live Activity countdowns on the iPhone Lock Screen and Dynamic Island **Weather & METAR/TAF** - METAR and TAF decoding - Visibility, RVR, clouds, weather phenomena, and remarks - Zulu and airport-local times - Saved weather groups with automatic parallel updates - Report update times and group freshness indicators - Cached reports for offline access - TAF source fallback and attribution - Nearest airport METAR widget for small, medium, and large sizes **Holding Entry Trainer** - Direct, Parallel, and Teardrop/Offset entries - ICAO and FAA modes - Automatic sector determination **Temperature, Altitude & Wind** - ICAO Doc 8168 temperature corrections - Pressure Altitude and Density Altitude - Headwind, tailwind, and crosswind calculations - Aircraft-specific wind limits **Conversions & Lookups** - Speed, distance, altitude, pressure, temperature, weight, volume, and time conversions - Airport, callsign, registration, and aviation abbreviation lookups - Updated callsign data with custom entries **Training & Utilities** - Morse Code and SELCAL trainers - Display flashlight with Home Screen quick actions - Sunrise, sunset, moonrise, and moonset calculations - Coordinate selection and mapping - Aviation calendar and operational references **Data & Storage** - ICAO procedures and operational concepts, including ICAO Doc 8168 - Weather from NOAA Aviation Weather and supporting sources - ADSB.lol and Open Glider Network traffic under ODbL - mwGG airportsdata airport and timezone data under the MIT License - Natural Earth offline world maps - Offline access to saved tools, profiles, logs, and cached weather - iCloud sync and export for independent backups - No subscriptions or advertising Designed for everyday use, from quick cockpit calculations to flight preparation and training. Clear visualizations make aviation concepts easier to understand, while saved settings keep your tools ready for the next flight.