PCM Telemetry
Decode 128-word PCM frames at 51.2 kbps with 32-bit frame synchronization, A/D voltage scaling, and automatic complement-on-odd detection.
gr-apollo
Generate and decode Apollo-era spacecraft telemetry with modern software-defined radio
Voice Channel
Extract astronaut voice from the 1.25 MHz FM subcarrier — demodulate to 300-3000 Hz audio at 8 kHz sample rate.
Virtual AGC Bridge
Bridge decoded telemetry directly to the Virtual AGC emulator via TCP socket — send DSKY commands, receive downlink data.
Full TX Chain
Build complete transmit signals with streaming GNU Radio blocks — PCM telemetry, FM voice, SCO channels, and composite USB carriers.