I've copied the message below from the original thread
http://www.vansairforce.com/community/showthread.php?t=42519
concerning a transatlantic ferry flight in an RV7A that's still underway.
Perhaps this is the best forum to share these questions?
Please excuse me if this is of no interest
David R
////////////////////////////////////////////////////////////
The ferry pilot (David) is fine and progressing well, despite the errant 'Spot' positions
not updating frequently enough.
This topic raises some interesting questions and your views would be of interest.
Can 'Spot' be used reliably enough in fast moving craft like a/c for reliable feedback?
Pros:
Satellite monitoring of position using GPS.
Messaging facility (see spot message #85 where David says "he's well and all OK"
Small, Portable and relative low cost.
Web enabled monitoring for all to see progress
Emergency locate button
Handheld and great for trekkars.
Cons:
Refresh rate poor up to 20mins in sparse areas. On this occassion 4hrs lack of info!
Poor Web interface, symbols too large and bunch too much a high scales.
Too slow to feed back.
Subscription.
Is it really suitable for a/c at 200mph. with a 10 min update (33 miles).
My question? Is it possible to have a APRS(HF) system for such long flights using HF units
coupled with GPS, as In my opinion, APRS even though not 'quality controlled' beats Spot
hands down. Like the internet is not QC'd but it works by stint of popularity.
Your comments are invited.
David R
http://www.vansairforce.com/community/showthread.php?t=42519
concerning a transatlantic ferry flight in an RV7A that's still underway.
Perhaps this is the best forum to share these questions?
Please excuse me if this is of no interest
David R
////////////////////////////////////////////////////////////
The ferry pilot (David) is fine and progressing well, despite the errant 'Spot' positions
not updating frequently enough.
This topic raises some interesting questions and your views would be of interest.
Can 'Spot' be used reliably enough in fast moving craft like a/c for reliable feedback?
Pros:
Satellite monitoring of position using GPS.
Messaging facility (see spot message #85 where David says "he's well and all OK"
Small, Portable and relative low cost.
Web enabled monitoring for all to see progress
Emergency locate button
Handheld and great for trekkars.
Cons:
Refresh rate poor up to 20mins in sparse areas. On this occassion 4hrs lack of info!
Poor Web interface, symbols too large and bunch too much a high scales.
Too slow to feed back.
Subscription.
Is it really suitable for a/c at 200mph. with a 10 min update (33 miles).
My question? Is it possible to have a APRS(HF) system for such long flights using HF units
coupled with GPS, as In my opinion, APRS even though not 'quality controlled' beats Spot
hands down. Like the internet is not QC'd but it works by stint of popularity.
Your comments are invited.
David R