Also, keep in mind that APRS is generally 1200 baud (though I did see some mention of 9600 now.) This is way worse than anything most people experienced during the dialup Internet days.
I was talking about AX.25, that allows for higher bandwidth than its subset APRS or POCSAG. But yeah, not that much, 9.600 baud is all you're gonna get on UHF/VHF, if you stick with HF it's 300 baud...