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[aprssig] APRS as a Situational Awareness tool

Keith VE7GDH ve7gdh at rac.ca
Sat Jan 12 18:51:08 UTC 2008


Bob WB4APR wrote...

> What killed (B) however is the very poor implementation of
> objects in most follow-on clients. Uiview transmits all objects
> (Old, and new) at exactly the same rate and all at the same time
> in one huge block. This generates an order of magnitude too
> many packets for the need, clobbers the network for a full 30
> seconds at a time for 30 objects, blocks most digipeats of those
> objects, and either has too much time lag or too much QRM to be
> of real value.

I created 10 objects this morning. I set the Object Interval down at a 
ridiculous 1 minute. By the time I had the 10 objects created, they were 
being sent out about one every 10 seconds. I then added an 11th object, 
this one moving. Still, the objects were just sent out once a minute but 
with 10 seconds between each one. I later played around with longer 
times. With the object interval set to 10 minutes, they were again sent 
out every 10 minutes, but with a 10 second gap between each one. I 
didn't create 30 objects, but I had no reason to believe that the 
program would act differently whether there one or ten or thirty 
objects. No, they aren't sent at a decaying rate, but I just couldn't 
get it to send 30 seconds of objects the way you were describing. I 
couldn't even get it to send two objects with no gap in between.

This was on UI-View32 ver 2.03. What version of  UI-View were you using? 
I just couldn't replicate what you were describing. The object interval 
is set in SETUP - MISCELANEOUS.

Is there anyone using an old version of UI-View32 or the really old 16 
bit version that could try this?

73 es cul - Keith VE7GDH
--
"I may be lost, but I know exactly where I am!"








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