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GP-SDR v1.2.1

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@github-actions github-actions released this 24 Aug 07:06
v1.2.1
f9ad5e5

GP-SDR 1.2.1

GP-SDR 1.2.1 adds a unified adaptive Mapper workflow, truthful automatic RF
gain control, and a managed IQ evidence lifecycle for unattended surveys.

Adaptive Mapper

  • Map is the new beginner/default workflow. It repeatedly sweeps the chosen
    range and combines activity detection, local modulation classification,
    available protocol decoders, and enabled offline transcription.
  • Observation time is adjustable from 0.1 seconds through seven days per
    channel. Long observations use bounded capture windows so Stop remains
    responsive and memory use stays finite.
  • Discovery and Identify remain separate options in Advanced mode and existing
    saved jobs remain compatible.
  • Mapper cards and the live receiver strip show the actual gain stages,
    amplifier state, signal-above-noise threshold, and latest automatic decision.

Automatic receiver tuning

  • RTL-SDR Auto uses the tuner's driver AGC.
  • HackRF Auto now controls LNA and VGA gain between captures and can enable the
    approximately 11 dB RF amplifier after repeated weak-input measurements.
  • Clipping or excess headroom immediately disables the HackRF RF amplifier
    before reducing the other gain stages.
  • Auto, saved-calibration, and manual gain modes are available, along with
    Auto, weak-signal, balanced, conservative, and manual sensitivity targets.

Managed IQ evidence

  • Mapper shifts an active channel to baseband and resamples it before archival,
    avoiding full-rate 8–20 MS/s files for narrowband evidence.
  • IQ remains in Analyzing until local classification, available decoding,
    and enabled transcription finish.
  • Evidence with decoder output, transcription/callsigns, a supported protocol,
    confident waveform classification, or strong signal evidence is retained.
  • Low-value evidence enters a recoverable rejected-IQ quarantine. It is removed
    automatically after 24 hours by default; Settings offers one hour through
    seven days.
  • Storage caps discard quarantine before retained evidence and protect pending
    analysis for at least 24 hours. Settings reports analyzing, retained, and
    rejected IQ separately.

Verification

  • Go unit, API, static-analysis, adaptive gain, IQ lifecycle, quarantine, and
    multi-receiver Mapper tests
  • JavaScript syntax and simulated adaptive-Mapper API smoke tests
  • Universal Intel/Apple Silicon macOS package, Linux amd64/arm64 packages, and
    Windows x86_64 package with checksum and archive verification

The macOS release is ad-hoc signed and not Apple-notarized. GP-SDR remains
receive-only; encrypted P25 traffic is identified and skipped, not decrypted.

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