SWLtools vs FT Ham

SWLtools: The Companion for Shortwave Listening Enthusiasts SWLtools is an app designed specifically for Shortwave Listening (SWL) enthusiasts who want to enhance their listening experience. It records what you hear, shows you the band, and reads the digital modes that carry text on the air. Whether you are a hobbyist or a dedicated DXer, SWLtools supports your activity from the antenna to the logbook. DECODING THE ON-AIR TEXT MODES Point the app at a signal and it turns it into readable text. - Morse (CW). The app follows the tone by itself and measures the sending speed from the signal, so it keeps up with hand-sent Morse as well as machine-sent. A side panel collects the callsigns it has heard, and each transmission starts on its own line when the operator hands over. - RTTY, in both ITA2 and SITOR-B. - Weather fax (WEFAX). The chart builds up line by line as it arrives, and can be saved straight to your photo library. - ACARS aircraft messages, with the ones carrying a position shown on a map. Decoded text can be saved, reopened later and shared. All times, on screen and in the saved files, are UTC — the way radio logs are kept. SPECTRUM AND WATERFALL If your receiver provides an IQ output, SWLtools displays the real-time spectrum and spectrogram. Visually explore the bands and gain deeper insight into the signals you are receiving. Where the two channels of a USB adapter do not arrive perfectly in step — a common trait of audio codecs — a sample-delay correction removes the mirror image that would otherwise appear beside every signal. AUDIO RECORDING AND STORAGE Easily record and store audio directly from your receiver. Capture signals from around the world and listen to them again whenever you want, or turn a recording into a video to share. OPTIMIZED FOR THE BELKA RECEIVER SWLtools was designed to work seamlessly with the Belka receiver. It is the perfect companion for outdoor listening sessions, letting you record your DX, explore frequencies with the spectrum view, or read a weather fax from the field. The app is optimized for low power consumption when displaying the spectrum and waterfall, making it ideal for portable use. REQUIREMENTS To use SWLtools you need an inexpensive USB audio adapter (ADC/DAC) connected to your iOS device. These affordable dongles typically provide a microphone input and a headphone output, which is enough to record, to decode, and to show a single-channel spectrum. A two-channel audio interface does more: it carries a true I/Q pair, so the spectrum shows the full band above and below the tuned frequency, and it is the only kind that can play the receiver's audio through the iPhone speaker while you listen. The app tells you which class of device you have connected and what it allows, and an audio diagnostics panel shows exactly what iOS is doing with the signal if something does not sound right. Note: please make sure your receiver is compatible with the app's features and that you have the required accessories for optimal performance.

FT Ham – FT8/FT4 Decoder & Audio Transmitter for Amateur Radio FT Ham puts a complete FT8/FT4 decoder and audio encoder/transmitter in your pocket. Decode, reply, and log QSOs directly from your iPhone — all in real time, fully offline. What the app does for you: - Live Waterfall: frequency vs time spectrogram with color intensity and vertical labels for each decoded signal. - Real-time Decoding: receive FT8 and FT4 audio via microphone or connected audio interface and see callsigns, reports, and SNR instantly. - Transmit (Encode & Play): generate FT8/FT4 audio for CQ, reports, RRR, and 73, aligned to correct UTC slots and played through speaker or radio interface. - Auto QSO Sequencing: detects CQ, prepares replies, respects UTC timing and even/odd cycles, retries if needed, and can complete QSOs automatically. - Manual Control Always Available: full manual message selection and intervention at any point. - Predefined Messages & Composer: CQ, DX→ME, reports, RRR, and 73 — automatically filled with your callsign and locator, fully customizable. - Logbook & ADIF Export: automatically log completed QSOs and export to standard ADIF for external logging software. - Contact Map: visualize logged QSOs and geographic coverage in a single view. Privacy & Safety: - All decoding and signal processing runs entirely on your device. No internet connection required. - FT Ham does not collect or share personal data. All settings and logs remain local on your device. - Audio output may be connected to external radios; always comply with local amateur radio regulations. - Payments are handled by Apple or third-party services; FT Ham never receives payment details. Legal & Licenses: - FT Ham code is released under the MIT License. - Third-party library licenses are included in-app.