From arodriguez@pacbell.net Wed Mar 13 16:33:49 1996
Path: ashpoly!cascade!mxgate!coyoacan!pacbell!arodriguez
From: arodriguez@pacbell.net (Anton Rodríguez)
Newsgroups: comp.dsp
Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1996Mar13.163349.6200@pacbell.net>
Date: Wed, 13 Mar 1996 16:33:49 GMT
Organization: Pacific Bell Internet Services
NNTP-Posting-Host: pacbell.net
X-Newsreader: NewsWatcher 2.0b24
Lines: 11

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

Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'.
The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20).

The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design.

-- 
=== Anton Rodríguez ===
Dept of Electrical Engineering, Pacific Bell Internet Services
"There are 14 nodes and only 10 countries. Count again."

From joliveira@hanse.de Thu Mar 14 11:56:49 1996
Path: ashpoly!cascade!mxgate!coyoacan!hanse!joliveira
From: joliveira@hanse.de (Ji-woo Oliveira)
Newsgroups: comp.dsp
Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1996Mar14.115649.5394@hanse.de>
Date: Thu, 14 Mar 1996 11:56:49 GMT
References: <1996Mar13.163349.6200@pacbell.net>
Organization: Hanse-Netzwerk Hamburg
NNTP-Posting-Host: hanse.de
X-Newsreader: TIN [version 1.2 PL2]
Lines: 12

In article <1996Mar13.163349.6200@pacbell.net>, arodriguez@pacbell.net (Anton Rodríguez) writes:
> How the 14 ASCII characters per node are encoded into the record groove.
> Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'.

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

Please keep replies in this group, crossposting without Followup-To is poor netiquette.

-- 
Ji-woo Oliveira | joliveira@hanse.de
PGP Key fingerprint: FD6C 2F57 16E3 537B
"Keep the channels open."

From rkarlsson@utexas.edu Thu Mar 14 20:06:49 1996
Path: ashpoly!cascade!bigsur!utexas!rkarlsson
From: rkarlsson@utexas.edu (Renata Karlsson)
Newsgroups: comp.dsp
Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1996Mar14.200649.5529@utexas.edu>
Date: Thu, 14 Mar 1996 20:06:49 GMT
References: <1996Mar13.163349.6200@pacbell.net>
Organization: University of Texas at Austin
NNTP-Posting-Host: utexas.edu
X-Newsreader: WinVN 0.99.5
Lines: 8

In article <1996Mar13.163349.6200@pacbell.net>, arodriguez@pacbell.net (Anton Rodríguez) writes:
> How the 14 ASCII characters per node are encoded into the record groove.

A symbol rate of 0.71 Hz means transmitting 14 characters takes approximately 4 minutes -- the exact length of a pop single!

-- 
Renata Karlsson -- University of Texas at Austin
"There are 14 nodes and only 10 countries. Count again."

From lreyes@utexas.edu Thu Mar 14 23:44:49 1996
Path: ashpoly!cascade!mxgate!coyoacan!utexas!lreyes
From: lreyes@utexas.edu (Lars Reyes)
Newsgroups: comp.dsp
Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream
Message-ID: <1996Mar14.234449.6953@utexas.edu>
Date: Thu, 14 Mar 1996 23:44:49 GMT
References: <1996Mar13.163349.6200@pacbell.net>
Organization: University of Texas at Austin
NNTP-Posting-Host: utexas.edu
X-Newsreader: NewsWatcher 2.0b24
Lines: 8

In article <1996Mar13.163349.6200@pacbell.net>, arodriguez@pacbell.net (Anton Rodríguez) writes:
> How the 14 ASCII characters per node are encoded into the record groove.

Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame.

-- 
Lars Reyes
Tape trading list upon request. SASE required for international mail.