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echo: amateur_radio
to: Richard Menedetter
from: Bob Seaborn
date: 2016-01-07 15:57:00
subject: ???

> Hello, Bob!
 >
 > 07 Jan 16 10:05, from Bob Seaborn -> Holger Granholm:
 >
 >BS>       Well, I do also have a fusion and a dmr rig, but don't play with
 >BS> them all that much.  I do much prefer the audo quality of D-STAR.
 >
 > Really??


      Yes, absolutely! I do have rigs for all three, and fusion is close to
D-STAR, but I'd say that dmr has a way to go.  Mind you, I'm using them all
with a DV4Mini, as we only have D-STAR and fusion repeaters within range
here.


 >
 > D-Star uses the older AMBE vocoder while DMR and Fusion use AMBE+2.
 > Fusion can also use more Bandwidth for the Vocoder compared to D-Star
 > and DMR.
 >
 > So D-Star should sound clearly worse than any other of the mentioned
 > techniques.
 > It should also be much more affected by the R2D2 effect (bad audio when
 > you have high bit error rates).
 >
 > Than again I only have DMR and FM, so I cannot really compare.
 >







                       .....Bob, VE5XEF


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