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A comment on NPR: New Packet Radio. Parent comment

Re:NPR: New Packet Radio by jhart99 on Monday March 25, 2019 @01:40PM (#19484661)
More than just encryption, this will run afoul of FCC part 97.305(c) and 97.307(f)(6) which says on the 70cm band that the maximum symbol rate cannot exceed 56kbaud and the bandwidth cannot exceed 100kHz. However the underlying transceiver chip can also work on the 33cm band where these limits no longer apply.
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Re:NPR: New Packet Radio by badpizza on Monday March 25, 2019 @06:30PM (#19487344)
Original author seems to be based in France, so I don't think FCC limits are being into consideration. Would be interesting if there exists an equivalent limitation by EU regulations.

At international level, encryption in ham bands is forbidden (at least).

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