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GET /hyperkitty/api/list/[email protected]/email/A4FOM4ETBPXLO3RK4YLUXTDN4SDURMZV/?format=api
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/A4FOM4ETBPXLO3RK4YLUXTDN4SDURMZV/?format=api", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api", "message_id": "[email protected]", "message_id_hash": "A4FOM4ETBPXLO3RK4YLUXTDN4SDURMZV", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/I3GYDON3LKTKOJK7FN7DS3S3MVQQUKSD/?format=api", "sender": { "address": "karn (a) philkarn.net", "mailman_id": null, "emails": null }, "sender_name": "Phil Karn", "subject": "[amsat-bb] Re: ARISSat telemetry and Doppler tuning", "date": "2011-08-21T07:01:04Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/MXBKBUGIFNDBP653TKDBBW2BIU5USZGZ/?format=api", "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "On 8/20/11 6:40 AM, Ronald G. Parsons wrote:\n>\n> With these two changes, although the Doppler correction may drift off,\n> it does so very smoothly, which I assume allows the decoding of the BPSK\n> data to be more accurate.\n\nYes, the closer you keep it the better it'll work. Errors of up to +/-\n50 Hz are fairly negligible, but beyond that it starts to degrade. The\ndemodulator searches +/- 200 Hz in 100 Hz steps around a nominal carrier\nfrequency of 1500 Hz. I should probably have made it search a wider\nrange but with that much mistuning the sidebands would start to be\nclipped off by the edges of a typical SSB filter.\n\n\n", "attachments": [] }