Controller application for the Funcube Dongle software defined radio receiver, built using the HID API library and the Qt GUI toolkit.

The Funcube Dongle is a small software defined radio receiver for 64 MHz - 1.7 GHz. It fits into a computer's USB port and uses USB audio to transfer complex I/Q data to SDR applications. The control API for setting frequency, gain, filter, etc. uses the USB HID standard.

It provides full support for the Funcube Dongle API:: * Change frequency and apply frequency correction. * Change RF gains and filters. * Change IF gains and filters. * LNA enhancement, bias current, etc. * I/Q correction. * Auto-repeat tuning buttons (click and hold button to scan). * Variable frequency step. * Upgrade and verify the firmware.