Fobos SDR backend loaded at runtime: Agile fobos_sdr.dll first, regular fobos.dll fallback
Device enumeration and open/close
Center frequency control
Sample rate selection
Relative bandwidth control for Agile backend (shown but ignored by Regular backend)
LNA gain control, 0..2
VGA gain control, 0..31
GPO control
Internal/external clock selection
Synchronous streaming into the SDRangel sample FIFO

Runtime notes:

On Windows, place fobos_sdr.dll and its runtime dependencies next to the SDRangel executable or make them available through PATH.
The plugin intentionally does not use developer-machine paths such as C:\dev\....
File logging is disabled by default. Configure with -DFOBOS_DEBUG_FILE_LOG=ON to write sdrangel_fobos_source.log for local diagnostics.

The plugin is intended as a native SDRangel sample source. It does not include analog video decoding or SDR# compatibility code.

Initial integration and hardware testing: Alex Antonov UT2UM Kyiv 2026.

Windows runtime packaging

On Windows, official SDRangel builds are expected to provide the Fobos SDR runtime packages through the SDRangel Windows dependency repository:

external/windows/fobos-sdr for Agile firmware/API
external/windows/fobos-regular for regular/classic firmware/API

The plugin build copies fobos_sdr.dll, fobos.dll, and the required libusb-1.0.dll runtime to the SDRangel binary directory so users do not need to copy runtime DLLs manually.

The companion dependency repository updates are tracked separately as:

sdrangel-windows-libraries PR #32 for Agile runtime
sdrangel-windows-libraries PR #33 for regular/classic runtime