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<p>On 27 Sep 2016 16:45:11 -0700<br>
"ikj1234i@yahoo.com [op25-dev]" <op25-dev@yahoogroups.com> wrote:<br>
<br>
> That is a very interesting question, there is some margin built in to<br>
> the timing specs, but it's not clear how much the time difference of<br>
> arrival would eat into that. It's usually not that common or easy to<br>
> monitor mobiles directly in UHF/800/900 - the much more common case<br>
> is to listen to them via the repeater output (downlink) anyway, also<br>
> TDMA isn't currently used for direct (simplex) mobile/mobile comms.<br>
> <br>
<br>
Wouldn't that make multilateration of P25 phase II handsets impossible,<br>
since it's entirely predicated on measuring TDOA? Or is the guard<br>
interval sufficiently long enough that it doesn't matter at short<br>
distances?<br>
<br>
-- <br>
Alex<br>
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