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[aprssig] KC2TUA/KC2UFG Ballon Down?

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Sun Mar 22 23:38:25 UTC 2009


If you'd like to see some serious APRS infrastructure usage, check out 
the plots at:

http://ldeffenb.dnsalias.net/tracking/balloons/*

The smaller dash numbers are lower resolution.  Check those first.  
Please don't pull the -9 or -10 unless you're really going to do 
something with it.  They're HUGE and you need to zoom way in to see what 
they have to communicate.

Unfortunately, my APRS-IS monitor filter doesn't extend out far enough 
to have caught the landing.  If you look at it via 
http://aprs.fi/KC2TUA-8 and switch to satellite view, you'll be amazed 
at how it barely (hopefully) missed landing in a lake!

Lynn (D) - KJ4ERJ

PS.  Does anyone have any links to the project itself?  I'd really like 
to see what they actually flew.  Their BLOG is at 
https://explore.twitter.com/PBH3

Steve Noskowicz wrote:
>
> Looks like it's down, just a few minutes ago.  All-in-all, it's a nice track.  AND they have quite a ride to pick it up...
>
> http://www.findu.com/cgi-bin/track.cgi?call=KC2TUA-8&degree=16
>
>
> -- 73, Steve, K9DCI
> Manage Radio Memories with an Excel Spreadsheet !
> Click on a Freq to tune. Click to capture Radio freq.
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>
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> You know that sea of entropy we were going to drown in?  Well, upon closer examination, it turned out to be ignorance.  S. Noskowicz 1987
>
>
> --- On Sun, 3/22/09, Mike Miller <mike.kc9doa at sbcglobal.net> wrote:
>
>   
>> From: Mike Miller <mike.kc9doa at sbcglobal.net>
>> Subject: Re: [aprssig] KC2TUA/KC2UFG Ballon QRM
>> To: "TAPR APRS Mailing List" <aprssig at tapr.org>
>> Date: Sunday, March 22, 2009, 4:17 PM
>> I'm sure the interference to your
>> repeater was unintentional and 
>> just a poor choice of frequency. Both the ARRL and the
>> Upper New 
>> York Repeater Council band plans show 146.400 as simplex.
>> The 
>> ARRL does note that it may be used as a repeater input in
>> some 
>> areas. If the repeater had a tone protected input, you
>> probably 
>> would have never known they were there.
>>
>> Mike kc9doa
>>
>> On 22 Mar 2009 at 13:12, Ron wrote:
>>
>>     
>>> OK the balloon is out of my range now and approaching
>>>       
>> Nfld.
>>     
>>> I respectfully disagree that the effect of these
>>>       
>> transmissions
>>     
>>> was either minimal or short-lived.
>>>
>>> From 30,000 ft the APRS signal was being heard by
>>>       
>> nodes over 300
>>     
>>> miles away, which could be about 25
>>>       
>> digipeaters...although some
>>     
>>> would hear their neighbors transmission and not
>>>       
>> repeat. Not to
>>     
>>> mention every home station that has WIDE1-1 set for
>>>       
>> digipeating.
>>     
>>> This has about 10 times more effect than a mobile
>>>       
>> driving by at
>>     
>>> 60mhp.
>>>
>>> In this case the duration of the pass was also
>>>       
>> significant. From
>>     
>>> approx 08:20z to 19:30z it was heard in my area.
>>>
>>> While the effect to our APRS network was not severe,
>>>       
>> the 147.000-
>>     
>>> repeater took a significant beating for about 10 hours
>>>       
>> thanks to
>>     
>>> KC2UFG transmitting on an inappropriate frequency.
>>>
>>>
>>> I am very disappointed that people planning such
>>>       
>> extended balloon
>>     
>>> expeditions do not take these things into
>>>       
>> consideration.
>>     
>>> It has been discussed on this group a number of times
>>>       
>> and I
>>     
>>> though there was an understanding of proper beacon
>>>       
>> rates and
>>     
>>> paths. Especially the consideration of such rates
>>>       
>> while aloft
>>     
>>> (>1000ft), eg: direct paths only and reasonable
>>>       
>> beacon rates
>>     
>>> based on coverage/average speed.
>>>
>>> 73,
>>> VE1AIC Ron
>>>       
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>>
>>     
>
>
>       
>
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