[aprssig] D-Star Repeater (double) Objects

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Fri Jul 28 16:14:01 EDT 2017

Ok, so can you explain the reasoning behind the following two *packets* 
carrying the same redundant information?

2017-07-28 15:55:57 EDT: AI4YK-S>APDG01,TCPIP*,qAC,AI4YK-GS:;AI4YK  B *281955z2800.40ND08040.93WaRNG0000 440 Voice 438.02500MHz +0.0000MHz

2017-07-27 22:15:47 EDT: AI4YK-B>APDG02,TCPIP*,qAC,AI4YK-BS:!2800.40ND08040.93W&RNG0000 440 Voice 438.02500MHz +0.0000MHz

I understand that one is an "IGate Station" and the other is a "Repeater 
Object", but if they're going to carry the same information, why inject 
both?  Or is this an operator mis-configuration that is amazingly 
prevalent in the D-Star/APRS arena?

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

PS.  Notice that I didn't ask about the difference between AI4YK-GS and 
AI4YK-BS although if you can enlighten me on that I'd appreciate it as well.

On 7/28/2017 3:37 PM, Pete Loveall AE5PL Lists wrote:
> There are not 2 objects per repeater, there is one object and one IGate -station-.  Some repeaters don't have DPRS capability (it is an application addon) and therefore do not have IGate stations.
> Hope this helps.  The Objects are, in fact, repeater objects just like we generate objects for FM repeaters.  The IGate stations are DPRS IGates just like all other APRS IGates report their positions as regular APRS posits.
> 73,
> Pete Loveall AE5PL
> pete at ae5pl dot net
> -----Original Message-----
> Sent: Friday, July 28, 2017 12:26 PM
> Subject: [aprssig] D-Star Repeater (double) Objects
> A question was raised in the APRSISCE support group about why D-Star repeaters have two objects, one with a dash and another with spaces.  I know the reason for this was described at some point in the past, but I cannot lay my eyes on it.
> If anyone knows the history behind the duplication of D-Star repeater objects on the APRS, I'd appreciate a refresher.
> Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
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