[OZAPRS] UNPROTO

[Andrew Rich]

The UNPROTO part of the APRS message can be used to signifiy what sort of 
program you are running

See the APRS spec

More to this - in compressed APRS packets, the UNPROTO part is used to carry 
part of the position information.

An example where the UNPROTO is used to say what source it came from

VK4UTE-9>APOTC1,VK4RAI-3*,WIDE2-1/1: <UI>:
/290257z2727.71S/15234.96Ev000/000/A=000205 41CRod VK4UTE Parked

An example where the UNPROTO is used as part of the position report to save 
data.

VK4ACC-9>RS18S2,TCPIP,VK4OG-1*:`N:so?_>/"49}VK4ACC A Cooked Chook From 
Rockhampton


----- Original Message ----- 
From: "Jim (VK4AJO)" <VK4AJO at aapt.net.au>
To: "Australian APRS Users" <ozaprs at aprs.net.au>
Sent: Monday, March 31, 2008 11:57 AM
Subject: [OZAPRS] UNPROTO


> Good Morning/afternoon to All on the list,
> Just wondering what part of the network looks at the address of an aprs
> packet. What difference does it make if I send an unproto to aprs v
> wide1-1,wide2-2 or to xyzxyz v wide1-1,wide2-2 . I just had a look at a
> packet coming out of my tracker and it was addressed to RVT1R5. The TNC on
> uiview is addressing to something else. I got a message from someone
> "APRSS?" so I guess I must have sent an unproto to aprss and someone 
> cares!
> Thank you for any comments.
> Cheers
> Jim
>
> _______________________________________________
> Ozaprs mailing list
> Ozaprs at aprs.net.au
> http://aprs.net.au/mailman/listinfo/ozaprs
> 

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