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[aprssig] New MSG-OBJ format

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Tue Feb 21 22:10:13 UTC 2012


BTW, I caved on the POI/OBJECT debate to do my hold-out on the explicit 
desire to ADOPT and existing object by a new owner.

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

On 2/21/2012 5:07 PM, Lynn W. Deffenbaugh (Mr) wrote:
> Not really.  The message destination field is a fixed with in the spec 
> format.  If you don't send to a 9 character destination, it pads with 
> spaces to 9.  The reason we're sticking to 6 is that Yaesu's have an 
> AX.25 compatibility restriction.
>
> The object name can be as long (up to 9) or short as you can make 
> unique, but again, that will be going into an object packet that is 
> also a fixed width of 9, so shorter object names in the message to 
> OBJECT (or POI) won't really make the comment longer in the final 
> packet necessarily.
>
> I'm also all for shorter, especially when targeting spin-n-click radio 
> interfaces.
>
> Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
>
> On 2/21/2012 4:59 PM, Stephen H. Smith wrote:
>> On 2/21/2012 4:54 PM, Lynn W. Deffenbaugh (Mr) wrote:
>>> Almost, but if the symbol is optional, then it must be delimited.   
>>> Consider the following (I don't know if they're valid symbols, but 
>>> hopefully you'll get the gist of my concern).  These are the message 
>>> body sent to OBJECT (yes, I'm caving in on POI).
>>
>> Still think POI would be better -- It saves three letters (and the 
>> hassle of entering them on clunky user interfaces like a Kenwood 
>> radio) that can then be used in the freeform comment.
>>
>>
>> ------------------------------------------------------------------------------- 
>>
>>
>> -- 
>>
>> Stephen H. Smith    wa8lmf (at) aol.com
>> Skype:        WA8LMF
>> Home Page:          http://wa8lmf.net
>>
>> *****  NEW   Precision Mapping 9 For UIview Released! *****
>>    http://wa8lmf.net/aprs/PMap9_Notes.htm
>>
>>
>>  Vista & Win7 Install Issues for UI-View and Precision Mapping
>>     http://wa8lmf.net/aprs/UIview_Notes.htm#VistaWin7
>>
>> 30-meter HF APRS over PSK63
>>    http://wa8lmf.net/APRS_PSK63/index.htm
>>
>> "APRS 101"  Explanation of APRS Path Selection & Digipeating
>>   http://wa8lmf.net/DigiPaths
>>
>>
>>
>>
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>
>
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