From rito@mindspring.com Sat Sep 09 14:20:41 1995
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mindspring!rito
From: rito@mindspring.com (Rodrigo Ito)
Newsgroups: comp.dsp
Subject: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Sep09.142041.2522@mindspring.com>
Date: Sat, 09 Sep 1995 14:20:41 GMT
Organization: MindSpring Enterprises
NNTP-Posting-Host: mindspring.com
X-Newsreader: TIN [version 1.2 PL2]
Lines: 10

How the 14 ASCII characters per node are encoded into the record groove.

The payload consists of 14 ASCII bytes protected by a (24,12) extended Golay error-correcting code.
The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20).

Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword.

-- 
Rodrigo Ito -- MindSpring Enterprises
"Marcus is not one man."

From tstewart@unam.mx Sun Sep 10 06:39:41 1995
Path: ashpoly!cascade!transat!ukc!fennimore!unam!tstewart
From: tstewart@unam.mx (Takeshi Stewart)
Newsgroups: comp.dsp
Subject: Re: [FLAME] DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1995Sep10.063941.4009@unam.mx>
Date: Sun, 10 Sep 1995 06:39:41 GMT
References: <1995Sep09.142041.2522@mindspring.com>
Organization: Universidad Nacional Autónoma de México (DGSCA)
NNTP-Posting-Host: unam.mx
X-Newsreader: NewsWatcher 2.0b24
Lines: 8

In article <1995Sep09.142041.2522@mindspring.com>, rito@mindspring.com (Rodrigo Ito) writes:
> How the 14 ASCII characters per node are encoded into the record groove.

The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration!

-- 
Takeshi Stewart -- Universidad Nacional Autónoma de México (DGSCA)
"The carrier frequency does not drift by accident."