Pactor 4 is NOT in that situation. On HF, you are limited to 300 baud. Pactor 4 is way faster than 300 baud. Kun
________________________________ From: 44Net 44net-bounces+dnwk=linkun.info@mailman.ampr.org on behalf of Cliff Sojourner via 44Net 44net@mailman.ampr.org Sent: Friday, December 3, 2021 11:44 To: 44Net general discussion 44net@mailman.ampr.org Cc: Cliff Sojourner cls@employees.org Subject: Re: [44net] DN42 for 44net?
DStar is not a good example for your point. AMBE codec was patent encumbered for many years, not completely documented, so technically unable to be easily decoded.
I'm aware of one open source implementation of it, don't know if it is used at all, or how well it works.
Remember, PSK31 was not allowed by the FCC, until an open source implementation became commonly available. They key was documenting Vari-code. It's not difficult, or tricky, it is just a Huffman encoding such as used by Morse Code! So the PSK31 experience is the model for getting acceptance of a not-human-readable mode on amateur frequencies.
Pactor 4 is in that situation now. Proprietary codec, patent encumbered, not publicly documented... So should not be allowed on amateur frequencies; Commercial frequencies, ok.
I'm not sure about VARA, anyone know?
On December 3, 2021 9:58:23 AM PST, KUN LIN via 44Net 44net@mailman.ampr.org wrote:
Encoding is not encryption. You could decode D-STAR if you have the chip and everyone is free to decode the conversation. Kun
From: 44Net 44net-bounces+dnwk=linkun.info@mailman.ampr.org on behalf of Dave Gingrich via 44Net 44net@mailman.ampr.org Sent: Friday, December 3, 2021 9:45 To: 44Net general discussion 44net@mailman.ampr.org Cc: Dave Gingrich dave@dcg.us Subject: Re: [44net] DN42 for 44net?
Please point out where the "the USA encryption restriction” over radio links, is documented. After all, D-Star radios use a proprietary codec. Heck even if you access https://ampr.org/ over a radio link, the connection is SSL encrypted, as are nearly all web sites in the world.
Encryption over RF links has not been illegal for years, at least in .US. I can’t speak for other jurisdictions.
— Dave K9DC
On Dec 3, 2021, at 11:23, air gapped via 44Net 44net@mailman.ampr.org wrote:
Something to keep in mind: the USA encryption restriction only applies to traffic going over the air. Networks can and do have encryption as long as relay over air has information in the clear.
Adam Lewis KC7GDY
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