[Dstar] D-Star Digital Data

[Andrew Gilbett]

Hi Everyone,

After reading through the dstar.org.au website, I found that there is
no frequency allocated for high bandwidth data (128kbps) on 70cm only
23cm (1298.1000 MHz). Is this because of the fact that there currently
no available gear with which to do this on 70cm? According to the LCD
we can use wideband techniques above 430Mhz (or something along those
lines), hence the 160kHz channel would be fine here.

Also what about using low bandwidth DD modes i.e. 4.8kbps on both 2m &
70cm, I am under the impression that this is possible using most
current radios available, please correct me if I am wrong? Is there a
frequency set aside for DD in 2m/70cm or is using the DV simplex
frequency appropriate (as the radio should be able to distinguish
between Voice & Data packets according to the spec)?

I currently do not own a D-Star radio but am making inquires about the
operation and usage patterns as apart of an investigation for an
Electrical Engineering Undergraduate Thesis. The title is
"Investigation & Construction of a Software Defined Radio Repeater",
one of the options after getting a software FM repeater working is to
investigate the feasibility of building a D-Star repeater or a hybrid
(D-Star & FM).

Thanks :-)
Andrew Gilbett
andrew.gilbett at gmail.com