Six meters of open air, and why that's the easy part

Jul 11, 2026 · 1 min read
notes

Planning a WiFi bridge between two balconies, two floors apart. The free-space path loss for six meters is trivial — maybe 40dB, nothing a normal access point can’t handle. The actual problem is that most omnidirectional antennas are weakest exactly straight down, which is almost exactly the angle this link needs. Math was never the hard part.

Josh Huang
Authors
Digital IC Design Engineer · Homelab Operator

Digital IC Design engineer with 20+ years of experience — design, verification, scripting, automation, LEC, LINT, SYN. Open to work in Japan/Singapore.

Off the clock I run a home network that’s grown well past reasonable size: a GB10 AI box, a mesh of UniFi and AmpliFi gear, three cameras streaming live, and a small fleet of always-on services that occasionally page me at 2am.