Long wave != AM: long wave implies AM, but not vice versa (AM can be - and usual... | Hacker News

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HL33tibCe7 56 days ago | parent | context | favorite | on: Long wave radio fans mourn fading frequencies (202...

Long wave != AM: long wave implies AM, but not vice versa (AM can be - and usually is - used on medium/short frequencies)

lxgr 56 days ago [–]

> long wave implies AM,

It doesn't: There's a lot of non-AM/non-voice stuff on longwave, most notably various digital time beacons (WWVB in the US, DCF77 in Western Europe etc.)

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