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| {{ENG-CANSAT-NAV}} | | {{ENG-CANSAT-NAV}} |
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− | == Forewords ==
| + | {{COMMON-CANSAT-FREQUENCY-PLAN}} |
− | The RFM69 module and Packet Radio can do a lot to secure message transmission and message content (with the encryption key).
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− | As for wired network (aka TCP/IP) the packet radio enclose your data into datagram before sending it over the air. This helps the hardware to detect error and possibly recover when colisions occurs.
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− | Obviously, more we are talking on a same frequency, more we will have colision, less the communication will be efficient.
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− | The best solution would be to use a frequency plan where each team receives its own frequency range like showed in the following table.
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− | {| class="wikitable" border="1" | |
− | |-
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− | | align="center" | Team
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− | | align="center" | Freq (MHz)
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− | | align="center" | Team name
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− | |- style="font-size: 90%"
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− | | align="left" | Team #1
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− | | align="left" | 433.1
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− | | align="left" | . .
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− | |- style="font-size: 90%"
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− | | align="left" | Team #2
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− | | align="left" | xx
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− | | align="left" | yyyy
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− | |- style="font-size: 90%"
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− | | align="left" | Team #3
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− | | align="left" | xx
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− | | align="left" | yyyy
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− | |}
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| {{ENG-CANSAT-TRAILER}} | | {{ENG-CANSAT-TRAILER}} |