Perhaps it is possible. However, we have repeaters around here with more than 
200 km coverage radius, and I don't see TDMA solving both capacity and 
coverage. Time will tell.

Glen, thanks for expanding on LTE. I am not deeply familiar with the LTE PHY 
and I don't intend to copy it, just botrow some  ideas.

best regards,
Wdrian

>
>I think that's more a limitation of existing protocols.  For example we
>
>could design a TDMA protocol to handle longer distances, or use probe 
>packets to measure the propagation delay and compensate (e.g. send 
>schedule tx for a later timeslot).
>
>OFDMA sounds interesting, I'll look into it some time.
>
>I agree with Glen - mFSK is just a small change to 2FSK in terms on 
>implementation complexity.
>
> >Meanwhile people tend to disregard open
> >source projects as inferior, so getting traction won't happen soon.
>
>Perhaps in today's Ham community, however in the wider fields of 
>engineering and IT open source is generally regarded as superior - for 
>good reason.
>
>Cheers,
>
>David
>
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