Observed arrival · 2026-10-07
Loftskeyti’s radio-modem simulator
An interactive sandbox models radio links with audio-rate signals, modulation, receiver behavior, and transmission errors.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Radio learners and amateur-radio enthusiasts
- Worth noticing
- Its SSTV model shows noise and echoes building across relay hops; slower scans put more energy into each pixel.
Field notes
The page describes receiver-specific behavior rather than treating radio as a generic channel: AFC responds differently for PSK and QAM, FSK, slow-scan television, and speech links. For SSTV, it describes a VIS header, sync pulses, and noise that can accumulate when a relay passes along a degraded copy. The page also says the sandbox lets users choose equipment eras, whose modeled crystal offsets vary by decade.
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
One card from the complete issue