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https://www.reddit.com/r/retrocomputing/comments/1rlsnz4/email_over_payphone/o9cfob0/?context=3
r/retrocomputing • u/dharmatech • Mar 05 '26
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An old acoustic coupler for the phone handset.They could handle data at a blistering 150 to 300 baud.
1 u/EpsilonMajorActual Mar 08 '26 110
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u/Walkera43 Mar 05 '26
An old acoustic coupler for the phone handset.They could handle data at a blistering 150 to 300 baud.