D Star emulation. (Astar)

[Tom Azlin N4ZPT]

OK.  I am not a D-STAR advocate but I will post your note to the 
National Capital Region D-STAR Association reflector. 73, tom n4zpt



On 5/17/2011 3:33 PM, Bob Bruninga wrote:
> Tom,
>
> Thanks.  Well, spread the word about the A-STAR concept, because we have the
> radios, we have the signall8ing, we have the displays and we have the
> callsign eencoding.  These radios even have the built in abilty to QSY to a
> commanded QSY frequency in an incoming packet.  Think ham cellular.
>
> Plus, all one has to do is ker-chunk (in PTT mode) onto the A-star
> frequency, and the A-star gateway will the record your presence and
> automatically assign the repeater callsign.
>
> So much to do, so little time.
> But spread the word till we find someone to write the code..
>
> And if you see any errors in design on my web page, lemme know.
>
> http://aprs.org/avrs.html
>
> Bob, WB4APR
>
>
> -----Original Message-----
> From: tacos-bounces+bruninga=nadn.navy.mil at amrad.org
> [mailto:tacos-bounces+bruninga=nadn.navy.mil at amrad.org] On Behalf Of Tom
> Azlin N4ZPT
> Sent: Tuesday, May 17, 2011 3:26 PM
> To: AMRAD
> Subject: Re: D Star emulation. (Astar)
>
> Hi Bob,
>
> There is a D-STAR hotspot up in Maryland that is connected to a packet
> gateway so the slow speed data side of the D-STAR DV radio is transfered
> over to the packet side and vice versa.  However I think the data going
> to D-STAR picks up the call sign of the gateway d-star radio. The D-PRS
> ->  APRS gateway already exists but is not quite what you propose as it
> is one way.
>
> Using a built-in APRS radio that can do mic-e might be a good way to
> solve the call sign "problem" when coming from the FM side. not just the
> from and to call signs but the rpt1 and rpt2 might have be loaded on the
> fly. PLUS the FM user will likely need to go register at their nearest
> gateway if they expect their audio to go any where depending on what
> they are depending on working.
>
> There are hams working the various alternate software that mimics a
> repeater or creates D-STAR DV packets using the DVDongle.  Some of that
> software uses the DVDongle to encode/decode voice then uses a sound card
> to send out the completed GMSK signal to a 9600 bps capable radio. Will
> leave all that to them.
>
> 73, tom n4zpt
>
>
>
>
>
> On 5/17/2011 2:31 PM, Bob Bruninga wrote:
>> The real boon to D-star will be the first person to take one of the D-star
>> CODEC dongles, and write some analog gateway software and connect it to an
>> Analog APRS repeater.  This would be called an "A-STAR" repeater.
>>
>> All of the callsign handshaking on the ANALOG side is done by APRS radios
>> which can include their callsign in every transmission (PTT mode),
> including
>> the callsign of who they want to talk to.  On the receive side of the
> analog
>> side, the APRS display on the front panel of the radio displays the
>> callsigns of who is connected (and where!).
>>
>> So APRS (built into now 8 different models of radio) does all the
> signaling,
>> callsign handling, and ID, and the GATEWAY then passes this over to the
>> "D-STAR" network and to everyone on D-STAR it looks like a D-STAR call.
>>
>> Surely someone can write this simple A-STAR gateway code.  And then the
>> other 98% of ham radio operators (that do not have D-star) can participate
>> in UNIVERSAL-BY-CALLSIGN voice contact.
>>
>> Please see:   http://aprs.org/avrs.html
>>
>> Such a software writer would be considered a hero by 98% of ham radio
>> operators and a traitor by the 2%.
>>
>> Bob, WB4APR
>
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