Observed arrival · 2026-09-26
Radio 4DAT: a backup net in a browser
A browser-based planner for building a backup radio net from available gear, checking license constraints, and preparing communications tools.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Small teams planning legal backup radio communications
- Worth noticing
- The link estimate states receiver-sensitivity assumptions and labels its result a planning aid that needs field-test calibration.
Field notes
The link model applies 0, 10, or 15 dB of clutter loss for open, forest, or urban terrain, and reports a reliable range with a 10 dB fade margin. Its stated assumptions include −120 dBm receiver sensitivity; the separate intercept estimate assumes a more sensitive receiver at 10 m. The page calls these planning aids and says field tests should calibrate them. Team-kit editing can be limited to editors.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
⊠LoginAccess appeared gated
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue