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[aprssig] APRS high speed

scott at opentrac.org scott at opentrac.org
Thu Mar 23 21:49:21 UTC 2006


Main problems here are that a higher data rate means less energy per bit,
and GPS receivers don't usually output more than one position per second
anyway.  A 1200 baud channel (assuming a continuous transmission) can handle
a 5-hz update rate just fine, if you use a reasonably efficient format.
 
So the question is, what are you trying to accomplish?
 
Scott
N1VG


  _____  

From: aprssig-bounces at lists.tapr.org [mailto:aprssig-bounces at lists.tapr.org]
On Behalf Of Andrew Rich
Sent: Thursday, March 23, 2006 1:38 PM
To: TAPR List
Subject: [aprssig] APRS high speed


Gudday
 
Been looking at radar technology the last few days and it begged me to ask
the question.
 
Has anyone thought / played with APRS mobile at high data rates ?
 
The planes uses pulsed transmissions and very fast.
 
On a much smaller scale i would like to play with hooking the GPS straight
into a LIPD module and use that - range 100 m 

-----------------------------------------
Andrew Rich
Amateur radio callsign VK4TEC
email:  <mailto:vk4tec at tech-software.net> vk4tec at tech-software.net
web: http://www.tech-software.net
Brisbane AUSTRALIA 

 

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