koppar-lte-modem
A phone line over USB-C: LTE data, SMS and voice calls with the call audio on USB. A 4-layer KiCad board designed by Koppar from a one-page spec.
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GITHUB · launched Oct 31, 2026 · 62 upvotes (top 27%) · 0 views
Niche: open-source hardware and maker electronics · 172 launches, 13 in the last 7 days ▲ +18% · Explore this niche →
Category and tags
- Horizontal
- Hardware & robotics
- Developer
- Not AI
- Commercial product
- ec25
- kicad
- lte
- open-hardware
- pcb
- quectel
- +4 more
Visit website ↗ Source listing ↗
Could you build this?
No This is a hardware product: an LTE modem board with carrier-grade radio, SIM, and voice audio. A working version requires RF design, antenna and layout work, certification, and physical manufacturing and testing, which vibe coding cannot cover.
What it would actually take: Requires an LTE modem module (e.g., a Quectel or Sierra module), a 4-layer PCB with RF-aware layout and antenna matching, power and SIM circuitry, and USB audio firmware. Carrier and regulatory certification (FCC, PTCRB or carrier approval) is needed before shipping. Building it takes hardware engineers with RF and embedded experience, plus lab test equipment.
Competitors
Other products that read as similar to this one : 22 launches clear the similarity bar, closest 8 shown.
Attention rank: #4 of 23 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 51 days after the earliest competitor.
- A USB-C LTE modem that gives my computer a phone line · hn · 2026-10-31 · 61 upvotes · similarity 0.54
- kaller · github · 2026-10-06 · 37 upvotes · similarity 0.40
- Clicks Communicator · ph · 2026-09-27 · 138 upvotes · similarity 0.39
- Sisu_SSE-9 · github · 2026-09-13 · 10 upvotes · similarity 0.37
- MaxBars · ph · 2026-10-30 · 1 upvotes · similarity 0.37
- Custom Power Dialer Solution · ph · 2026-09-17 · 1 upvotes · similarity 0.37
- kws-x1-standalone-rs · github · 2026-10-10 · 22 upvotes · similarity 0.35
- Message Korp · ph · 2026-10-22 · 1 upvotes · similarity 0.35
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.