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*Subject*: Re: [amsat-bb] FM Satellites*From*: K5OE@xxxxxxx*Date*: Mon, 12 Jul 1999 21:16:45 EDT

bruninga@nadn.navy.mil writes: > 4) In my opinion, the FM satellties cannot possibly support TWO-WAY > exchanges between every possible combination of users. If there are 60 > stations, then it would take 60*60*2, or 7,200 transmissions! But if the > objective was just to "join the group" on that pass, then each of the > 60 stations could say a full 5 seconds of information to EVERYONE and all > 60 stations would be successful in only 5 minutes of the pass! Bob, No argument with your point, but I believe this is a binomial combination, where the following applies: n! / r!(n-r)! where n=60 and r=2 Hence, only 1770 "combinations" are available. At 5 seconds for each transmission and each exchange requiring 2 transmissions, a perfect 15 minute pass could "only" handle 90 full exchanges. But why quibble over the small stuff ? <grin> 73, Jerry, K5OE ---- Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA. To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org

**Follow-Ups**:**Re: FM Satellites***From:*Randolph Kohlwey

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