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289 points spzb | 3 comments | 28 Mar 25 22:14 UTC | HN request time: 0.618s | source

1. mschuster91 ◴[31 Mar 25 11:10 UTC] No.43533582[source]▶

Fun fact: ham radio operators to this day use a similar technique to distribute images - it's called slow scan television.

replies(1): >>43533801 #

2. simondanerd ◴[31 Mar 25 11:41 UTC] No.43533801[source]▶

Also check out rtty and FT8/FT4 for those interested in other "digital over analog" modes.

replies(1): >>43534032 #

3. flyinghamster ◴[31 Mar 25 12:10 UTC] No.43534032[source]▶

In this case, continuous GPS coordinates are sent on one audio channel while the other channel is voice.

In the 1980s we downloaded games from the radio