[aprssig] javaprs port that doesn't send a "keepalive" packet?

[Tapio Sokura]

Hi,

 From the small sample I've studied, javaprssrvr-servers seem to output 
a #-prefixed idle packet every 20-30 seconds, at least on port 14580. Is 
there a way to disable these packets by using a different port or 
sending a specific kind of login command, for example?

I'm asking because a simple, only txing, cell-phone based tracker 
accumulates most of the traffic from these idle packets. When you are 
charged for every byte transferred, you like to keep the transferred 
amount to a minimum. Would using UDP solve this?

   Tapio