[aprssig] Ultimate APRS digi

[Robert Bruninga]

>> But by splitting all user inputs to alternate 
>> channels, the 144.39 can have 5 to 10 times 
>> the capacity is has now.
> 
> There is a fundamental flaw in this proposal.  
> You can never hear a station directly.  If 
> you are in area with no digipeater coverage, 
> you will hear nothing on 144.39.

I think maybe you missed something:
1) Everything on every alternate input is digipeated over to
144.39
2) ALL digis retain an input on 144.39
3) Anyone not in a local area with alternate freqs will still be
on 144.39

Therefore your condition above will not occur.
Something like that.
Bob, WB4APR