3 ms·
Could this [1] be possible with "Wi-Fi HaLow, based on the IEEE 802.11ah standard", too?: [1] "Sensor-Free Soil Moisture Sensing Using LoRa Signals" (2022) htt
by westurner 3y ago
Could this [1] be possible with "Wi-Fi HaLow, based on the IEEE 802.11ah standard", too?:
[1] "Sensor-Free Soil Moisture Sensing Using LoRa Signals" (2022)
https://news.ycombinator.com/item?id=38768950 https://news.ycombinator.com/item?id=38768950
- westurner 3y ago- "43 km line of sight with USB WiFi stick (2005)" https://news.ycombinator.com/item?id=30541576 https://news.ycombinator.com/item?id=30541576 - Kreosan English's modded lunar rover WiFi antenna videos: "100s of km" https://youtu.be/Nk-nj_BwoBE?si=0iwpQBFs9ZqFP0p8 https://youtu.be/Nk-nj_BwoBE?si=0iwpQBFs9ZqFP0p8 ... 10x: https://youtu.be/GWq6L94ImX8?si=V2R8hpa3vAosbhvi https://youtu.be/GWq6L94ImX8?si=V2R8hpa3vAosbhvi
- int_19h 3y agoWhen you have unobstructed line of sight, a 5W handheld can reach all the way up to ISS without problem. It's very different on the ground, though, especially on high frequencies, where much smaller objects can prevent propagation.
- westurner 3y agoAre helically-polarized emissions more likely to have higher S/N at range and through e.g. plasma? https://news.ycombinator.com/item?id=39119248#39132365 https://news.ycombinator.com/item?id=39119248#39132365