Blotter, a live map of LAPD radio activity
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HN · launched Apr 28, 2026 · 8 upvotes (top 52%) · 0 views
Niche: interactive mapping platforms · 191 launches, 16 in the last 7 days ▲ +7% · Explore this niche →
Category and tags
- Government
- Analytics & BI
- B2C
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 191 launches in interactive mapping platforms →
Could you build this?
Partial While mapping frontend coordinates is straightforward, capturing, transcribing, and accurately geocoding live LAPD radio dispatch audio in real time requires robust audio pipelines and specialized processing.
What it would actually take: A complete system requires ingesting live SDR or Broadcastify LAPD audio streams, passing audio segments through automated speech recognition (Whisper fine-tuned on police 10-codes and jargon), and using an NER/geocoding service to extract cross-streets and addresses onto a Mapbox/Leaflet frontend. The primary engineering hurdles are reliable low-latency audio stream processing and resolving vague or abbreviated radio dispatch locations into accurate map coordinates.
Discussion
1 comment analyzed.
Concerns raised: Transcription accuracy is poor due to scanner audio quality, Location extraction frequently incorrect
Competitors
Other products that read as similar to this one : 1118 launches clear the similarity bar, closest 8 shown.
Attention rank: #554 of 1119 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 180 days after the earliest competitor.
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- SDR-Lab-2.0 · github · 2026-09-20 · 17 upvotes · similarity 0.57
- Browser-Based Tempest · hn · 2026-09-07 · 5 upvotes · similarity 0.53
- hamsphere-virtual-radio · github · 2026-11-10 · 101 upvotes · similarity 0.53
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- antennacalc · github · 2026-10-03 · 11 upvotes · similarity 0.52
- Agent FM · hn · 2026-05-12 · 9 upvotes · similarity 0.52
- Rdio · hn · 2026-08-14 · 27 upvotes · similarity 0.51
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