GopherTrunk v0.2.5 — social announcement drafts

One-click copy-paste blurbs for posting the v0.2.5 release. Each block below is a fenced code block so the rendered-markdown “copy” button grabs exactly what you’d paste.

Release: https://github.com/MattCheramie/GopherTrunk/releases/tag/v0.2.5

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Reddit — title

GopherTrunk v0.2.5 — Motorola MMR talker alias + RID + encryption decode, APRS live end-to-end, P25 simulcast voice fix

Reddit — body

**[GopherTrunk](https://gophertrunk.org) v0.2.5 is out** — pure-Go digital-trunking scanner for RTL-SDR / HackRF / Airspy. P25 (Phase 1+2), DMR (AMBE+2 voice), NXDN, Motorola Type II, EDACS, LTR, MPT 1327, dPMR, D-STAR, YSF, plus APRS and POCSAG paging. No CGO, single static binary for Linux / macOS / Windows.

**What's new since v0.2.4:**

* **Motorola MMR P25 talker-alias closes end-to-end** (#397, #403, #409, closes #376) — the standard TIA-102 form #389 shipped doesn't match what real Motorola systems emit. New Phase 1 vendor LCO 0x15 / 0x17 decoder, Phase 2 MAC-PDU dispatch on the voice chain, and `GROUP_VOICE_CHANNEL_USER_ABBREVIATED` (opcode 0x01, previously mis-named `OpMACPTT` and silently discarded) now backfills source RID + ALGID / KID encryption from the traffic channel for encrypted Phase 2 talkgroups.
* **APRS is now end-to-end live** (#401, #411) — Bell-202 AFSK DSP frontend + HDLC framer + receiver glue close out the Phase 5 pipeline started in v0.2.4. Drop an `aprs.channels` entry (`serial: antenna-pi, frequency_hz: 144_390_000`) and packets land on the bus, the `aprs_log` SQLite table, `/api/v1/aprs/packets`, and the `/aprs` web panel.
* **P25 simulcast / LSM voice fix** (#399, #356 follow-up) — the Phase 1 voice composer was hardcoded to the C4FM FM-discriminator path regardless of `trunking.systems[].p25_phase1_demod_mode`. On a simulcast site the CC decoded fine but every voice grant landed in an FM-discriminator that couldn't sync on LSM dibits, the LDU sink never fired, and the watchdog reaped the call with an empty WAV. Mode string is now plumbed end-to-end.
* **RTL-SDR DC-spike on P25 control diagnosis** (#406, #408, #412, issue #402) — three-phase investigation: CCStats + per-sample recording-power diagnostics, replay path mirrored through the production DDC + state-evolution diagnostics, and a decision-directed AFC that defeats data-DC integration so the offset estimator doesn't get pulled into the spike.
* **Windows RTL-SDR cold-boot: wider recovery envelope** (#398, closes #395) — 5 attempts with 200 / 400 / 800 / 1200 ms exponential backoff and a 150 ms WinUSB settle, for the most stubborn clone dongles that still wedged after v0.2.4's recovery path. Healthy dongles still open on attempt 0 with zero delay.
* **Silent-degradation warnings at startup** (#400, #356) — fires once per SDR with no `gain:` key, and once per conventional channel with CTCSS / DCS gating configured but `sdr.sample_rate` unset.
* **Phase 1 TDMA-channel grants → Phase 2 voice chain** (#413) — hybrid Phase 1 CC + Phase 2 voice deployments now route correctly.
* **CC Activity: patch member TGs over the super-group** (#407, closes #405) — Motorola patch member talkgroups now render first.
* **Markdown blog on the Pages site** (#396) — per-category archives, RSS, SEO meta.

**Downloads** (Linux / macOS / Windows, x64 + ARM64): https://github.com/MattCheramie/GopherTrunk/releases/tag/v0.2.5

**Docs:** https://gophertrunk.org

Heads-up: the v0.x line is still flagged prerelease — actively developed, feedback / captures / bug reports very welcome.

Discord

**GopherTrunk v0.2.5 is out** — pure-Go trunking scanner for RTL-SDR / HackRF / Airspy. P25, DMR, NXDN, analog trunked, APRS, POCSAG. Single static binary, zero CGO.

**What's new since v0.2.4:**
- **Motorola MMR P25 talker-alias closes end-to-end** (#397, #403, #409, closes #376) — Phase 1 vendor LCO 0x15/0x17 + Phase 2 MAC-PDU dispatch on the voice chain + source RID + ALGID/KID encryption backfilled from `GROUP_VOICE_CHANNEL_USER_ABBREVIATED` (opcode 0x01, was mis-named `OpMACPTT` and silently discarded).
- **APRS end-to-end live** (#401, #411) — Bell-202 AFSK DSP + HDLC framer + receiver close Phase 5. Drop an `aprs.channels` entry and packets land on the bus / SQLite log / REST / `/aprs` panel.
- **P25 simulcast/LSM voice fix** (#399, #356 follow-up) — Phase 1 voice composer was hardcoded to C4FM regardless of `p25_phase1_demod_mode`; simulcast grants silently failed. Mode string now plumbed end-to-end.
- **RTL-SDR DC-spike on P25 CC** (#406, #408, #412, issue #402) — three-phase investigation: CCStats + recording-power diag, replay through production DDC, decision-directed AFC that defeats data-DC integration.
- **Windows RTL-SDR cold-boot: wider recovery envelope** (#398, closes #395) — 5 attempts with 200/400/800/1200 ms backoff + 150 ms WinUSB settle for stubborn clones.
- **Silent-degradation warnings at startup** (#400) — no `gain:` per SDR, or CTCSS/DCS gating with zero `sdr.sample_rate`.
- **Phase 1 TDMA grants → Phase 2 voice chain** (#413), **CC Activity patch members over the SG** (#407, closes #405), **Markdown blog on Pages** (#396).

Download: <https://github.com/MattCheramie/GopherTrunk/releases/tag/v0.2.5>
Docs: <https://gophertrunk.org>