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fahnen/13.jpg AMSAT-NA Microsats - Protocols
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AMSAT-NA Microsats - Protocols

The UoSAT/Microsat File transfer protocols (The PACSAT Protocol Suite) were first published in the Proceedings of the 9th ARRL Computer Networking Conference, September, 1990. The PACSAT Protocols define file transfer protocols for use by Low Earth Orbit Packet Radio Satellites (PACSATs).

These protocols are currently in use on AO-16, LO-19, UO-14, UO-22, KO-23, KO-25, IO-26, and PoSAT. They are also in use on three pure commercial spacecraft, the upcoming UNAMSAT mission, and six missions under development.

Most of the specification files contain the original text of the papers that define the Pacsat Protocols. Other files contain updates to those documents. The updates will be rolled into the base documents at some time in the far future, probably on another timeline. I don't know why I even mentioned it. In any case, only the base+update represents the true protocol. The text files are available as a zipped group.

Contents

INTRO.TXT
PACSAT Protocol Suite Overview

BROADCST.TXT
Text of the original broadcast protocol specification.
BDCASTU1.TXT
Fixes to the original broadcast protocol spec.
BDCASTU2.TXT
Directory broadcast specification.
BDCASTU3.TXT
Implementation details.

FTL0.TXT
FTL0 protocol specification. The download portions have been superseded in practice by the broadcast protocol.
FTL0U1.TXT
Corrections and implementation notes to FTL0

FHEAD.TXT
PACSAT File Header Definition
CTYPES.TXT
The current list of compression types.
FTYPES.TXT
The current list of file types.

DATASPEC.TXT
PACSAT Data Specification Standards

Contact Information

Dr. Jeff Ward
Technical Director
Surrey Satellite Technology, Ltd.
University of Surrey
Guildford, Surrey, GU2 5XH
England
j.w.ward@ee.surrey.ac.uk

Harold Price
President
BekTek, Inc.
5949 Pudding Stone Lane
Bethel Park, PA 15102
hprice@bektek.com


Last modified: January 19, 1995

Harold Price, NK6K

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