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Blotter, a live map of LAPD radio activity

Details

External ID
47929386
Source
HN
Company
—
Product
Blotter, a live map of LAPD radio activity
Website domain
blotter.fm
Launched
April 28, 2026
Cohort
—
Upvotes
8
Upvotes percentile
0.4813624678663239
Tags
—
Fetched at
Sept. 7, 2026, 9:26 p.m.
Updated at
Sept. 7, 2026, 9:26 p.m.

Enrichment

Theme
autonomous robotics, drones, and sensor hardware
Vertical
Government
Function
Analytics & BI
Audience
B2C
AI stance
Not AI
Project type
Hobby / open-source project
Normalized one-liner
live map of lapd radio activity
Manually corrected
False

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 — 383 launches clear the similarity bar, closest 8 shown.

Attention rank: #205 of 384 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).

Launched 180 days after the earliest competitor.

Other launches for this product

Same idea, different domain

Nobody's really built a analytics & bi tool for Legal yet.