Hacker News: mrtnmcc2https://news.ycombinator.com/user?id=mrtnmcc2Hacker News RSShttps://hnrss.org/hnrss v2.1.1Tue, 07 Apr 2026 05:54:21 +0000<![CDATA[New comment by mrtnmcc2 in "Open-source communications by bouncing signals off the Moon"]]>Great question, the latest version has Tx RHCP, and then Rx either LHCP or RHCP controlled with RF switches (in each antenna). This allows point to point links (where the Tx pol and Rx pol should be the same), or "bounce links" where the circular polarization flips with the bounce. I should note RHCP Rx has a bit worse noise figure (LNA is different) but good enough for any line of sight.

]]>Sun, 09 Nov 2025 05:03:29 +0000https://news.ycombinator.com/item?id=45863048mrtnmcc2https://news.ycombinator.com/item?id=45863048https://news.ycombinator.com/item?id=45863048