[OZAPRS] Rocket APRS on 146.450 this weekend

[Darryl Smith]

GPS units are required to stop operating when the speed is greater than
999
knots and also 100,000 feet. Some GPS receivers use OR rather than AND.

Of course if you write your own GPS code you can bypass these limits.
[Look
at the GPS payload on Oscar 40]. 

The rayleigh fading is not likely to be an issue since the maximum speed
is
going to be about 200 kph on re-entry performance should be Ok

Darryl

---------
Darryl Smith, VK2TDS POBox 169 Ingleburn NSW 2565 Australia
Mobile Number 0412 929 634 [+61 4 12 929 634 Int] - 02 9618 6459 
www.radio-active.net.au/blog/ - www.radio-active.net.au/web/tracking/


-----Original Message-----
From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
Behalf Of Richard Murnane
Sent: Friday, 29 September 2006 8:25 PM
To: VK / ZL APRS Users
Subject: [OZAPRS] Rocket APRS on 146.450 this weekend

See http://www.asri.org.au/SSRP/campaigns/200610/october-ssrp-campaign

Perhaps some kind soul in VK5 might gateway it onto 145.175 so we can  
all have a look. :-)

Actually, I'd be curious if it even works at "rocket speed". Don't  
GPS units stop giving reliable indications above a speed of a few  
hundred km/h?

73 Richard VK2SKY
____

Richard Murnane   vk2sky at unwired.com.au



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