chobeat@lemmy.ml to Technology@lemmy.worldEnglish · 12 hours agoWhat if the Internet Goes Down? - 15 Jan, 7PM CETlemmy.mlimagemessage-square116fedilinkarrow-up1644arrow-down15
arrow-up1639arrow-down1imageWhat if the Internet Goes Down? - 15 Jan, 7PM CETlemmy.mlchobeat@lemmy.ml to Technology@lemmy.worldEnglish · 12 hours agomessage-square116fedilink
minus-squarecmnybo@discuss.tchncs.delinkfedilinkEnglisharrow-up2·3 hours agoFor LF and MF, you typically want narrow signals, not spread spectrum. It’s hard to make wide band antennas for such low frequencies and propagation can change a lot in just a few tens of kHz.
For LF and MF, you typically want narrow signals, not spread spectrum. It’s hard to make wide band antennas for such low frequencies and propagation can change a lot in just a few tens of kHz.