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[aprssig] [amsat-bb] Party Balloon Long Duration Mission (???!)

R. Rochte rochte at gmail.com
Fri Mar 30 03:48:33 UTC 2012


Bob:

My HYSPLIT prediction (just posted) was based on different lat/long that I
pulled from APRS.fi with the same time stamp.  I will re-run it based on
the coordinates below.

73,
Robert

On Thu, Mar 29, 2012 at 11:24 PM, Bob Bruninga <bruninga at usna.edu> wrote:

> It went over my horizon (from Annapolis) at about 0300z just about
> perfectly
> as predicted for aa 15,000' altitude and 180 miles range.  Caught me by
> surprise, as I was working on plots and so did not try to decode the latest
> CW until I noticed I didn't hear it anymore.  I think m y last TEMPERATURE
> might have been -25C which means it is higher than expected, -OR- the
> temperature is colder than the "standard Atmosphere model".
>
> I really don't know this balloon stuff well.  SO we are flying by the seat
> of our pants.
>
> I got 0100z winds aloft for 5k, 10k and 18k feet and used that to back out
> an estimated track.  Then DR'd that along.  My best guesses are posted on
> the APRS-IS as objects.  And then I updated an object "W3ADO-11" balloon at
> my best guess at that 0300z time at a LAT of 37.6N and 73.7W headed 120 at
> 60 MPH.
>
> I hope it turns more easterly by morning.
>
> Everywone listen early as sun rises and maybe we will get some skip?
>
> Update soon on http://aprs.org/balloons.html
>
> Bob, WB4aPR
>
> -----Original Message-----
> From: Bob Bruninga [mailto:bruninga at usna.edu]
> Sent: Thursday, March 29, 2012 8:43 PM
> To: 'Bob Bruninga'; amsat-bb at amsat.org
> Cc: 'TAPR APRS Mailing List'
> Subject: RE: [amsat-bb] Party Balloon Long Duration Mission (LAUNCHED!)
>
> Balloon was released at 2330z (1930EDT) and is headed SE from Annapolis at
> 6
> knots.
>
> Rising very slowly. But it reached Freezing (0C) at 0020z so that should be
> about 7500'
>
> See http://aprs.org/balloons.html
>
> -----Original Message-----
> Sent: Thursday, March 29, 2012 4:43 PM
>
> But We notice another Device with CW on nearly the same freq.  Our dial
> freq
> will be 28.223 USB dial, but we hear another CW signal (Italian) down at
> 28.222 USB dial.</B>
> <P>
>
> Filling balloons now.
>
> -----Original Message-----
> Balloon web page is up.  Launch hopefully by sunset from Annapolis
> Maryland.
>
> Start here:    http://aprs.org
>
>
> -----Original Message-----
> If we are lucky, we hope to launch our 6 party-balloon long duration
> payload
> Thursday evening around sunset EST.    It has no APRS, just a 10m CW
> telemetry system.  We will have to locate it by signal strength and beam
> headings only.
>
> If you have APRS you can uplink your beam heading via APRS so we can see
> the
> DF solution maybe...
>
> More tomorrow (again, if we are lucky).  It will only be at 15,000 feet or
> so, vulnerable to weather and not so great winds...
>
> The battery could last 10 days....
>
> Bob, WB4APR
>
>
>
>
>
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>
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