[aprssig] High Speed APRS

[scott at opentrac.org]

I was looking at pulse position modulation, but not for high speed - I
wanted to see if position information could be sent from a balloon using a
strobe.  If the strobe can blink once per second and can be triggered with
millisecond accuracy, that's easily enough to send one byte per second, and
a complete position in 10 or 15 seconds.  You'd need to track it with a
telescope, and it'd work best at night.  But it wouldn't draw much power,
and the average power to peak power ratio is hard to beat.
 
Scott
N1VG


  _____  

From: aprssig-bounces at lists.tapr.org [mailto:aprssig-bounces at lists.tapr.org]
On Behalf Of Andrew Rich
Sent: Saturday, May 27, 2006 4:54 PM
To: TAPR List
Subject: [aprssig] High Speed APRS


Gudday
 
Anyone played with spread spectrum or pulse modulation for APRS ?
 
Been doing a lot of aviation training of late and they can send their
positions twice a second using Pulse Position modulation.

-----------------------------------------
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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