Observed arrival · 2026-09-20
Horizon Keeps Six Windows on the Radio Spectrum
A Windows application for viewing, sweeping, recording, and classifying radio-frequency signals from SDR hardware or IQ files.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- SDR users analyzing live or recorded RF signals
- Worth noticing
- It supports up to six independent Spectrum + Waterfall monitors and accepts HIQ, CF32, and CSV recordings.
Field notes
The application routes shared DSP data to multiple views, allowing heavy analysis to run in the background while inactive tools stop consuming computation. Wide scans are assembled from segments into a broader coverage map, and each monitor retains its own frequency range, scale, waterfall, and labels. Hardware behavior is read at connection time, with native or vendor-specific paths for several SDR families and SoapySDR available for others.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue