Aptdec decodes Automatic Picture Transmission (APT) images. These are medium resolution images of the Earth transmitted by, among other satellites, the POES NOAA weather satellite series. These transmissions are on a frequency of 137 MHz. They can be received using an inexpensive antenna and a dedicated receiver.

Command line utilities and a C library for controlling the HackRF Software Defined Radio (SDR) over USB. Installing this package installs the userspace hackrf utilities and C library. To install the hackrf udev rules, you must extend 'udev-service-type' with this package. E.g.: (udev-rules-service 'hackrf hackrf #:groups '("dialout")).

This program is a software-defined receiver which is able to process (that is, to perform detection, synchronization, demodulation and decoding of the navigation message, computation of observables and, finally, computation of position fixes) the signals of the BeiDou, Galileo, GLONASS and GPS Global Navigation Satellite System.

TLF is a Text User Interface amateur radio contest logging program. It integrates with radios supported by hamlib and other ham radio programs like fldigi. Many contests are supported including:

• CQWW (SO, M/S and M/M)

• WPX (SO, M/S and M/M)

• ARRL Sweepstakes (SO, M/S )

• EU SPRINT

• EUHFC

• ARRL-DX (both sides)

• ARRL-FD

• ARRL 10m

• ARRL 160m

• Region1 field day

• SP DX contest

• PACC (both sides)

• NRAU - scandinavian

• Wysiwyg mults mode (per band or per contest)

• WAEDX

It also supports connecting to DX clusters, log synchronization with other TLF instances over the network, and general QSO and DXpedition logging.

DSD is able to decode several digital voice formats used in radio transmissions.

Kappanhang remotely opens audio channels and a serial port to an Icom RS-BA1 server. The application is mainly developed for connecting to the Icom IC-705 transceiver, which has built-in WiFi and RS-BA1 server.

Compatible hardware/software:

• Icom RS-BA1 server software,

• Icom IC-705

• Icom IC-9700

redsea is a lightweight command-line FM Radio Data System (FM-RDS) decoder. Redsea can be used with any RTL-SDR USB radio stick with the rtl_fm tool, or any other software-defined radio (SDR) via csdr, for example. It can also decode raw ASCII bitstream, the hex format used by RDS Spy, and audio files containing multiplex signals (MPX).

SerialDV is a minimal interface to encode and decode audio with AMBE3000 based devices in packet mode over a serial link.

This library provides convolutional and Reed-Solomon codes for forward error correction. It also includes a compatibility layer so that it can be used as a drop-in substitute for libfec.

This package provides the driver and utilities for controlling the Airspy HF+ Software Defined Radio (SDR) over USB.

To install the airspyhf udev rules, you must extend udev-service-type with this package. E.g.: (udev-rules-service 'airspyhf airspyhf)

Minimodem is a command-line program which decodes (or generates) audio modem tones at any specified baud rate, using various framing protocols. It acts a general-purpose software FSK modem, and includes support for various standard FSK protocols such as Bell103, Bell202, RTTY, TTY/TDD, NOAA SAME, and Caller-ID.

rfcat is a program to control some radio dongles operating in ISM bands.

Supported dongles:

• YARD Stick One

• cc1111emk

• chronos watch dongle

• imme (limited support)

To install the rfcat udev rules, you must extend udev-service-type with this package. E.g.: (udev-rules-service 'rfcat rfcat)

gr-satellites is a GNU Radio out-of-tree module encompassing a collection of telemetry decoders that supports many different Amateur satellites.

This package provides a GNU Radio block interfacing with Digital Speech Decoder (DSD) to decode several digital voice protocols, like D-STAR, DMR, NXDN, P25, etc.

FLAMP is a program for transferring files by radio waves using AMP (Amateur Multicast Protocol).

This a C-language library for common DSP (Digital Signal Processing) primitives for SDR (Software Defined Radio).

Flwrap is a software utility for amateur radio use. Its purpose is to encapsulate both text and binary files in a way that allows them to be transmitted over any of several digital modes and verified at the receipt end for correctness.

Gqrx is a software defined radio (SDR) receiver implemented using GNU Radio and the Qt GUI toolkit.

The Ham Radio Control Library (Hamlib) is a project to provide programs with a consistent Application Programming Interface (API) for controlling the myriad of radios and rotators available to amateur radio and communications users.

Dump1090 is a Mode S decoder specifically designed for rtl-sdr devices. It can be used to decode the ADS-B signals that planes emit to indicate their position, altitude, speed, etc.

This is a C++ library implementing fast GF(256) Cauchy MDS Block Erasure Codec.

Ragel compiles executable finite state machines from regular languages. Ragel targets C, C++, Obj-C, C#, D, Java, Go and Ruby. Ragel state machines can not only recognize byte sequences as regular expression machines do, but can also execute code at arbitrary points in the recognition of a regular language. Code embedding is done using inline operators that do not disrupt the regular language syntax.

Provides Sprockets implementation for the Rails Asset Pipeline.

Action Cable integrates WebSockets with Rails applications. Through WebSockets it allows for real-time features in web applications.