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[aprssig] Newbie APRS object question

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Fri May 22 16:22:36 UTC 2009


I will go on record as saying it's probably "bad" to have an IGate gate 
objects from the Internet to RF.  I would have serious trouble figuring 
out just which objects to gate and as AI4PX pointed out, the pathing 
and/or actual broadcast location might be centered on the object's 
applicable area.

Remember, object IDs are not necessarily unique and anything coming from 
APRS-IS can be spoofed, so even gating "objects owned by/originating 
from" a specified callsign can have unexpected results.

Lynn (D) - KJ4ERJ - Finally clear on where you are and what you're 
attempting!

Wes Johnston, AI4PX wrote:
> In general , yes sending this objects from an IGATE would not be 
> desireable.  I wouldn't go so far as to say bad, but..... you have no 
> control of the path the igate uses, so your packet would cover an area 
> wider that you expect / want / need.  Also, more than one igate might 
> send your packet and lastly, the igate would encapsulate your packet 
> inside it's own and make the original packet longer on the air.
>  
> Wes
>
> On Fri, May 22, 2009 at 10:58, Fred Eckert <fredeckert at hotmail.com 
> <mailto:fredeckert at hotmail.com>> wrote:
>
>     Lynn (D) - KJ4ERJ wrote:
>
>     >          However, the IGate software will NOT do this for
>     objects heard
>     > on APRS-IS.
>     >
>
>     This answers my question. I have no RF capability at my base
>     station just APRS-IS. I will try to contact a local digi owner and
>     see if we can get the info out.
>
>     One more thing: Would it be a bad thing for IGates to send out
>     APRS-IS objects to local RF?
>
>     Thanks to all for the replies.
>
>     Fred KJ4LFJ
>
>
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> -- 
> Wes
> ---
> Where there's silence, there is no Hope.
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