Roundthe-world approaching Cancouver Island now!

[Robert Bruninga]

G6UIM reports a Balloon launched in the UK is approaching Washington state
from across Asia and the Pacific right now.

See: http://spacenear.us/tracker/ look for Balloon B-63



It is being well received by the APRS network in Canada, Washington and
Oregon as it approaches Vancoover Island as shown here:

Loading Image...



That image from Lynn, author of APRSIS32.

Bob, Wb4APR

[Paul Bramscher]

I've not yet had the opportunity to track a balloon. Anyone know what
to expect for the radio footprint on this one, or high altitude balloons
in general?

On the http://spacenear.us/tracker/ site I'm curious about the blue
circles surrounding the various balloons. Do these represent the footprint?

73
Paul, KD0KZE

Post by Robert Bruninga
G6UIM reports a Balloon launched in the UK is approaching Washington
state from across Asia and the Pacific right now.
See:http://spacenear.us/tracker/ look for Balloon B-63
It is being well received by the APRS network in Canada, Washington and
http://aprs.org/balloons/M0XER-3.jpg
That image from Lynn, author of APRSIS32.
Bob, Wb4APR
_______________________________________________
aprssig mailing list
http://www.tapr.org/mailman/listinfo/aprssig

[Lynn W. Deffenbaugh (Mr)]

From 41,600 feet, the radio footprint is about 251 miles in all
directions (radius). In the following screen shot, the balloon is at
the center. The smaller circle is the radio footprint (notice how all
of the recent radio receptions are inside that circle?) and the larger
circle is 577 miles in radius:



APRSISCE/32 will show you radio footprints for stations flying at
altitude as will aprs.fi, IIRC.

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

Post by Paul Bramscher
I've not yet had the opportunity to track a balloon. Anyone know what
to expect for the radio footprint on this one, or high altitude balloons
in general?
On the http://spacenear.us/tracker/ site I'm curious about the blue
circles surrounding the various balloons. Do these represent the footprint?
73
Paul, KD0KZE

Post by Robert Bruninga
G6UIM reports a Balloon launched in the UK is approaching Washington
state from across Asia and the Pacific right now.
See:http://spacenear.us/tracker/ look for Balloon B-63
It is being well received by the APRS network in Canada, Washington and
http://aprs.org/balloons/M0XER-3.jpg
That image from Lynn, author of APRSIS32.
Bob, Wb4APR
_______________________________________________
aprssig mailing list
http://www.tapr.org/mailman/listinfo/aprssig

_______________________________________________
aprssig mailing list
http://www.tapr.org/mailman/listinfo/aprssig

[Paul Bramscher]

Is there a mathematical or path-hop basis to the larger 577 circle?

I'm still checking the site I found today
(http://earth.nullschool.net/#current/wind/isobaric/250hPa/orthographic=-112.51,48.70,1821)
and it looks to me like my chance all hinges on how soon the balloon
swings east (assuming it does so). If it goes too far north first, I
predict it'll be too wide an arc to the north and east for me.

If this were a winter launch, things would be more in my favor. We here
in Minnesota frequently get alot of Canadian weather, the meteorologists
call it the so-called Alberta Clipper. It would send the balloon right
to us.

(Riding the Clipper would be an excellent winter balloon project for an
amateur group in Canada. But please send us hand-warmers and some
Unibroue, not -25 Fahrenheit...) :-D

73,
Paul / KD0KZE

Post by Lynn W. Deffenbaugh (Mr)
From 41,600 feet, the radio footprint is about 251 miles in all
directions (radius). In the following screen shot, the balloon is at
the center. The smaller circle is the radio footprint (notice how all
of the recent radio receptions are inside that circle?) and the larger
APRSISCE/32 will show you radio footprints for stations flying at
altitude as will aprs.fi, IIRC.
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

Post by Paul Bramscher
I've not yet had the opportunity to track a balloon. Anyone know what
to expect for the radio footprint on this one, or high altitude balloons
in general?
On the http://spacenear.us/tracker/ site I'm curious about the blue
circles surrounding the various balloons. Do these represent the footprint?
73
Paul, KD0KZE

Post by Robert Bruninga
G6UIM reports a Balloon launched in the UK is approaching Washington
state from across Asia and the Pacific right now.
See:http://spacenear.us/tracker/ look for Balloon B-63
It is being well received by the APRS network in Canada, Washington and
http://aprs.org/balloons/M0XER-3.jpg
That image from Lynn, author of APRSIS32.
Bob, Wb4APR
_______________________________________________
aprssig mailing list
http://www.tapr.org/mailman/listinfo/aprssig

_______________________________________________
aprssig mailing list
http://www.tapr.org/mailman/listinfo/aprssig

_______________________________________________
aprssig mailing list
http://www.tapr.org/mailman/listinfo/aprssig

[John Langner WB2OSZ]

The telemetry format is a little perplexing.

After discovering http://he.fi/doc/aprs-base91-comment-telemetry.txt, we can
understand this:

M0XER-3>APRS63,WIDE2*,qAR,VE7VMH:!//xOy0<xtO JioE/A=041397|y6OV&s<W!,|

The part between the | characters, in the comment field, is the base 91
representation of the telemetry values.

The protocol spec indicates that we still need the original special
"message" packets for the metadata such as field names, scaling
coefficients, and units. I don't see them anywhere.

However we do see less frequent longer packets like this:

M0XER-3>APRS63,WIDE2*,qAR,VE7VMH:!//w{W0=T:O
Jiq1.tJ57Q+UnByC(\Gb:$Yw>z/A=041420|y9OR&\<[!)|

What does ".tJ57Q+UnByC(\Gb:$Yw>z" represent? Is this the metadata in some
new compressed format? Where is it documented?

[Steve]

The tracker sends it's current location as normal, but also in the comment
field attempts to send the last 64 locations taken every 2 hours, which is
around 5 days. For the time it is out of range of any receiving stations.
It's in Base91

Steve
G6UIM

-----Original Message-----
From: aprssig-bounces-***@public.gmane.org [mailto:aprssig-bounces-***@public.gmane.org] On Behalf
Of John Langner WB2OSZ
Sent: 24 July 2014 00:38
To: aprssig-***@public.gmane.org
Subject: Re: [aprssig] Roundthe-world approaching Cancouver Island now!


The telemetry format is a little perplexing.

After discovering http://he.fi/doc/aprs-base91-comment-telemetry.txt, we can
understand this:

M0XER-3>APRS63,WIDE2*,qAR,VE7VMH:!//xOy0<xtO JioE/A=041397|y6OV&s<W!,|

The part between the | characters, in the comment field, is the base 91
representation of the telemetry values.

The protocol spec indicates that we still need the original special
"message" packets for the metadata such as field names, scaling
coefficients, and units. I don't see them anywhere.

However we do see less frequent longer packets like this:

M0XER-3>APRS63,WIDE2*,qAR,VE7VMH:!//w{W0=T:O
Jiq1.tJ57Q+UnByC(\Gb:$Yw>z/A=041420|y9OR&\<[!)|

What does ".tJ57Q+UnByC(\Gb:$Yw>z" represent? Is this the metadata in some
new compressed format? Where is it documented?

[Steve]

B-64 callsign M0XER-4 has made it off the coast of Washington State as well

Steve
G6UIM

-----Original Message-----
From: aprssig-bounces-***@public.gmane.org [mailto:aprssig-bounces-***@public.gmane.org] On Behalf
Of Steve
Sent: 24 July 2014 00:46
To: 'TAPR APRS Mailing List'
Subject: Re: [aprssig] Roundthe-world approaching Cancouver Island now!

The tracker sends it's current location as normal, but also in the comment
field attempts to send the last 64 locations taken every 2 hours, which is
around 5 days. For the time it is out of range of any receiving stations.
It's in Base91

Steve
G6UIM

-----Original Message-----
From: aprssig-bounces-***@public.gmane.org [mailto:aprssig-bounces-***@public.gmane.org] On Behalf
Of John Langner WB2OSZ
Sent: 24 July 2014 00:38
To: aprssig-***@public.gmane.org
Subject: Re: [aprssig] Roundthe-world approaching Cancouver Island now!


The telemetry format is a little perplexing.

After discovering http://he.fi/doc/aprs-base91-comment-telemetry.txt, we can
understand this:

M0XER-3>APRS63,WIDE2*,qAR,VE7VMH:!//xOy0<xtO JioE/A=041397|y6OV&s<W!,|

The part between the | characters, in the comment field, is the base 91
representation of the telemetry values.

The protocol spec indicates that we still need the original special
"message" packets for the metadata such as field names, scaling
coefficients, and units. I don't see them anywhere.

However we do see less frequent longer packets like this:

M0XER-3>APRS63,WIDE2*,qAR,VE7VMH:!//w{W0=T:O
Jiq1.tJ57Q+UnByC(\Gb:$Yw>z/A=041420|y9OR&\<[!)|

What does ".tJ57Q+UnByC(\Gb:$Yw>z" represent? Is this the metadata in some
new compressed format? Where is it documented?