RST Decoder vs ISS Repeater

This is an App that decodes Morse code input from the microphone. It is a Morse practice App that you can use to check if you are keying the correct code. Signals with good S/N can be decoded correctly, but signals with bad S/N cannot be decoded correctly. Also, the performance will be degraded for extremely slow or fast signals. Usually about 5 to 10 characters are required for speed synchronization of Morse Code. Adjust the input signal so that the peak value changes from level 6 to level 7. Make fine adjustments to each parameter according to the reception status. [Additional Functions] -In addition to the decoder using BPF, a new decoder using FFT has been added so that it can be switched according to the usage. -AFD (Auto Frequency Detector) function has been added to the decoder using BPF, and BPF can be set automatically by pressing the AFD button. -The decoder using FFT automatically follows the strongest signal in the band by AFD (Auto Frequency Detector) and AGC (Auto Gain Control). You can also hold the AFD / AGC parameters by pressing the Lock button. * There will be a time lag of about 1 to 2 seconds for AFD tracking. [Control parameters] 1. Audio Input Level 2.BPF ON/OFF 3.BPF of Center Frequency 4.BPF of Band Width 5.CW Speed Control ON/OFF 6.CW Speed Control Low, Mid1, Mid2 or High 7.Delete All Decoded Text 8.Realtime CW Signal Display 9.Input signal recording / playback function *Japanese/KANA text is not supported. [Note] Since the signal after BPF is output to the audio output, it can also be used as an AF-CW filter. [URL of this App working example video] https://youtu.be/Pwp7W4m-m34

Most satellite trackers tell you when the ISS passes over you. This app tells you when you and a second station are within radio range for communicating. The ISS carries a cross-band FM repeater. To make a contact through it, the station has to be above your horizon and above the other operator's at the same moment. ISS Repeater finds those windows for any two stations, up to seven days ahead. TWO STATIONS, OR ONE In DUAL mode, enter both stations and get back only the windows you can actually share. In SINGLE mode it works as a straightforward pass planner for listening to the repeater yourself. Coordinates go in three ways: typed, dropped as a pin on a map, or taken from your phone's own GPS fix. A DOPPLER SCHEDULE, NOT JUST A PASS TIME The downlink drifts about 20 kHz from one end of a pass to the other. Each result card lays out five receive channels across 437.790-437.810 MHz and tells you when to move to each one and when to leave it - separately for each station, so both operators can work from the same plan. FIND IT IN THE SKY Tap LIVE VIEW and hold the phone up. The camera shows the horizon, the compass points, the whole arc of that pass, and a marker on where the ISS is right now. When it is out of frame, an arrow points the way to turn. Azimuth, elevation and range are read out along the bottom. Bearings are TRUE, not magnetic. The app carries the World Magnetic Model and corrects for declination at your own coordinates, so what you see lines up with a rotator readout or a map. SAVE A PASS, GET A REMINDER Tap SAVE on any window to keep it. Saved passes keep their numbers current against freshly fetched orbital elements, and an optional notification arrives ten minutes before each one opens. NIGHT MODE Black background, red text, for use at the radio without wrecking your dark adaptation. PRACTICAL NOTES - Orbital elements come from CelesTrak, with AMSAT as a fallback, and are cached on the phone. Once they are there, searching, Doppler planning and the sky finder all work with no connection at all. You can paste your own element set instead if you prefer. - The app predicts geometry, not equipment. The repeater is powered down for some crew operations, EVAs and school contacts. A window means the station is mutually visible, not that it is transmitting. - Uplink and operating practice are yours to get right, according to your licence class and national regulations. PRIVACY No accounts, no analytics, no advertising, and nothing about you is collected or transmitted anywhere. The only requests the app makes are for orbital elements, and for Apple's map tiles if you use the map picker.