[amsat-bb] Re: PSK v. APRS

At 11:42 AM 6/7/2011, Justin Pinnix wrote:

Greg, you're overlooking something - the time dimension.

Yes, packet is a one-at-a-time affair, but those packets move quickly - 1200bps vs 31bps for PSK31. So, each station only has the bird tied up for a short period of time. You could think of it as a form of time division multiplexing.

Of course, if everyone is using computer frequency control, then dozens, if not hundreds of simultaneous QSOs can take place. In other words, frequency division multiplexing.

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