Cascade SDR — web SDR for RTL-SDR dongles: live spectrum/waterfall, FM/AM/SSB radio with RDS, channel scanner, ADS-B, AIS, APRS, ACARS, DAB+, NOAA APT and ISM-band devices (315–915 MHz: weather sensors, TPMS).

A tool to encode images/webcam into NOAA APT satellite signals with HackRF transmission support

Native macOS SDR mission console for RTL-SDR workflows with radio, aircraft, weather, satellites, and internal decode tools.

P2X8C4M64P/Propeller 2-based NOAA APT encoding/modulation

Binary-in-text encoding validation suite: uuencode, MIME Base64, XBM/XPM, X-Face, Ascii85, data URIs, org-mode. Literate FreeBSD test suite.

Encode images to NOAA APT

Here I have shared how I recieve multiple NOAA APT at the same time.