Thanks Keith, I just got this myself and was looking to forward it on. Interesting about the CP4 modulation type...
Drew ----- Original Message ----- From: "Keith N4ZQ" [email protected] To: [email protected] Sent: Thursday, April 12, 2007 7:10 PM Subject: [amsat-florida] Dnepr Launch Information
Message: 1 Date: Wed, 11 Apr 2007 21:45:01 -0700 From: CubeSat [email protected] Subject: [CubeSat] Dnepr Launch Information
CubeSat developers,
This email is confirming that the Dnepr launch is still set for April 17, 2007 at 0646:35 UTC. The TLEs have been updated on our website, and we plan on using the discussion board at http://polysat.calpoly.edu/irc/ to allow satellite trackers to discuss what's been found. We will also be posting updates from Kosmotras regarding the status of the launch as soon as we hear it on the website and the discussion boards.
We are encouraging all participants with a groundstation to help track CP4. CP4 will autonomously transmit a sensor snapshot once every two minutes while in orbit. This transmission will be on 437.325 MHz, at 1200bps FSK, using AX.25 packetized digital data. Please note that it is FSK, not AFSK, which will require you to set your radios to "single side band" (SSB) instead of "FM mode". This sensor snapshot is preceded by a six second CW preamble that can be decoded as the satellite's call sign. CP4's autonomous beacon contains sensor data that can be used to determine satellite's health status. A program that can make sense of the binary data encoded in the AX.25 packets will be made available to community soon (probably through the PolySat website). The information in this beacon would be useful to us, along with the recorded receive signal strength, should any anomalies occur early in our mission. We would like to encourage station operators to try to capture CP4's downlink and submit files to: [email protected] [or [email protected]].
Thank you all again for your participation, Lori Brooks
Via the AMSAT-Florida mailing list courtesy of AMSAT-NA [email protected] http://amsat.org/mailman/listinfo/amsat-florida