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[aprssig] Re: Balloon Altitude (was Clipped menus in Xastirandother ?'s)

Larry Cerney lcerney at viawest.net
Mon Dec 13 17:15:04 UTC 2004


Steve, et al;

Sorry, the call-k0ani-11 was my typing error.

I still don't understand why I can only get a good graph with last=1400
hours and I get an error message with last=48 hours.

Thanks again

Larry
K0ANI

"The only reason for time is so that everything doesn't happen at once." 
--Albert Einstein 

-----Original Message-----
From: aprssig-bounces at lists.tapr.org [mailto:aprssig-bounces at lists.tapr.org]
On Behalf Of Steve Dimse
Sent: Monday, December 13, 2004 9:08 AM
To: TAPR APRS Mailing List
Subject: RE: [aprssig] Re: Balloon Altitude (was Clipped menus in
Xastirandother ?'s)

On 12/13/04 at 8:33 AM Larry Cerney <lcerney at viawest.net> sent:

>Maybe you could help me with a problem with your cgi script below.  We flew
>a balloon yesterday with two APRS packages on it.  The first package,
>AE0SS-11 reports correctly with the last=9999 as it hadn't been seen by
>FindU until yesterday.  My package, K0ANI-11, I had tested in my yard 30
>feet away from my I-gate antenna and so FindU has a good base of altitude
>data.  When I use the cgi below with last=9999 it works fine.  When I try
to
>change it to last=24 or last=0024 I get an error message.
>"The image
"http://www.findu.com/cgi-bin/altitude.cgi?call-k0ani-11&last=24"
>cannot be displayed, because it contains errors."
>
>I just tested a few last='s and found that it does work starting at
>last=1400.  Strangely, with last=1390 it only shows the downward slope.

First the above URL is incorrect, it is call=k0ani-11, not call-k0ani-11,
however even fixing this gives an empty graph, because k0ani-11 has not sent
a
position in the 24 hours. In fact, the last position was October 16. I'll
leave
it for someone else to double-check the conversion to hours, but two months
is
pretty close to 1400 hours...
>
>I'm assuming the last= refers to hours, not minutes.  I that correct?
>
yes, but perhaps somehow you got the idea it is last hours it transmitted,
not
last from the current time. All the cgis that accept a last are referenced
to
current time. In fact now last=1390 fails, but 1391 gives the part of the
flight
above 50k. By the time you read this, it will be different...

Steve K4HG


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