Features

By what you want to do. Everything here is in Lite too, unless it says Full.

Hear what is on the air

• The whole band at once. A tuning is split into every channel it holds (hundreds, with the right width and mode for the band), each one measured against the band's own noise floor, so one squelch works everywhere.
• The chart. A bar per channel: heard now, locked out, muted, saved, set aside; the spectrum inside each channel, and a waterfall of the band.
• Open channels. A transmission opens its channel while it lasts, with its signal strength, tone or code, and the words as they come. Hold a channel to stay on it; let it go to carry on.
• Speech only. Play what has a voice in it and skip steady carriers and data bursts. Channels that keep opening for nothing are set aside for a while, and you see why.
• Morse. Morse code is recognised on every mode and written out live.
• AM, NFM, WFM, USB and LSB, with CTCSS and DCS tones decoded.

Name and keep channels

• Name a channel while it is open; the name follows it everywhere.
• Lock out for good or until the next start; mute and still see it.
• Saved channels with tags, and a starter set of channels for your region: airband, marine, amateur bands, PMR446/FRS/GMRS.
• Profiles: every setting under a name, swapped with one click.
• SDR# import of frequency lists.

Record and read back

• The record button keeps every transmission as a small Opus file, sorted by day and channel, with a limit on the folder.
• Heard recently and the conversation view: what was heard today, playable from the list.
• Full: the activity log as a CSV file for a spreadsheet; speech to text on your own computer (nothing is sent anywhere), a few seconds after each transmission; IQ recording of a held channel's whole tuning, and playing an IQ file as a receiver.

Several receivers

• Full: as many dongles as you have, sharing the bands between them; the band is covered that many times faster, or one receiver holds a channel while the others keep scanning.
• Full: audio for other programs on the same computer (decoders, recorders).

Looks after itself

• Gain: the app rides it and backs off when a strong signal overloads the dongle.
• Finds receivers plugged in, starts rtl_tcp for a dongle when you say so, and says in plain words what is wrong and what to do when something is missing.
• Everything stays on your computer. No account, no statistics, no network connection of the app's own; a problem report goes to the developer only when you press Send, after you have read it. Privacy.
• Updates on request only, from the app itself.

Not yet

Digital voice (DMR, P25, NXDN, D-STAR, Fusion) is not decoded: its speech codecs are patented in some countries, and we would rather say so than guess. Windows follows the Mac beta; both are built and tested from the first day.