[aprssig] WB4APR-11 Balloon Aloft from Annapolis (now northeast)

[Lynn W. Deffenbaugh (Mr)]

Or use APRSIS32 to get a map including paths of a bunch of RF copies 
outside of the dupe-suppressed APRS-IS.



The outer gray circle is 247 miles in radius.  The inner black circle is 
the altitude-based RF footprint of the balloon.  The red lines are 
direct packet copies from the balloon and green lines are digipeated 
copies of those packets.  So the footprint is pretty much holding true 
for a balloon at 27,503 feet giving a calculated 203mile radius footprint.

Lynn (D) - KJ4ERJ - Author of APRSISCE for windows Mobile and Win32

PS.  This diagram shows all packets copied since the balloon launched.

On 8/13/2018 1:01 PM, Robert Bruninga wrote:
> I was wrong, it is headed up towards new England.  It made a 90 degree turn
> to the north.
> Its over Philadelphia right now going up I95 more or less at 28,000 feet...
>
> So all northeastern states are in play.
> Listen on 144.34 clear channel.
> Or follow on APRS.FI (wb4apr-11)
> Bob WB4APR
>
> -----Original Message-----
> From: Robert Bruninga <bruninga at usna.edu>
> Sent: Monday, August 13, 2018 10:04 AM
> To: aprssig at lists.tapr.org
> Cc: Robert Bruninga <bruninga at usna.edu>; Anika Williams <fiub2 at hotmail.com>
> Subject: WB4APR-11 Balloon Aloft from Annapolis
>
> One of our summer students, Anika, just launched a round-the-world balloon
> using the APRS module from Bill Brown, WB8ELK.
>
> It transmits once every 2 minutes on 144.39 National APRS network for
> tracking on APRS.FI and FINDU.COM and it also transmits on 144.34 balloon
> frequency a few seconds later.
>
> It is a single 3' mylar party balloon and will cruise around 30,000 feet or
> so and not well above weather, so it will be a risk to see if it makes it
> across the Atlantic.
>
> It transmits at only 25 milliwatts and so a coastal station with a beam will
> be the last USA station to hear it.  Probably MD, VA or DE stations will
> have the last shot.
>
> Bob, WB4APR
>
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>

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