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Author Topic: Sterling Radiosonde Launch Evening 8 Jun 2017  (Read 909 times)

Offline ChrisSmolinski

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Sterling Radiosonde Launch Evening 8 Jun 2017
« on: June 09, 2017, 1503 UTC »
Sterling recently changed from the Mark IIa radiosonde on 1680 MHz to the LMS-6 on 401.0 MHz. Received with just a discone antenna and a pre-amp. I may have tuned in a bit late, although back when they used 1680 MHz I also used to first pick up the signal around I-70. It's so much easier to pick up these radiosondes on the 403 MHz band vs the L band. Next step is to figure out who is launching the other radiosonde I hear on 402.3 MHz. It's not an LMS-6.

Decoded using a quick and dirty modification to my decoding app for the Mark IIa radiosondes. It seems to [mostly] work. Of course now there are no more predicted passes up this way for at least the next week.

The balloon did some interesting loops south of Westminster, then went on to York. You can see a glitch in the position up in PA.



Here is the altitude plot, you can see lots of glitches in these values. The balloon got to almost 35k meters before it popped. At least the chute opened this time:




And here is the forecasted plot from http://predict.habhub.org based on the GFS. You can see it picked up on the shift to the west south of Westminster. But predicted a landing site near Hanover not York:

« Last Edit: June 09, 2017, 1513 UTC by ChrisSmolinski »
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Offline Josh

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Re: Sterling Radiosonde Launch Evening 8 Jun 2017
« Reply #1 on: June 09, 2017, 1547 UTC »
Does someone go out and get these things or do they care about recovery at all?
Conveniently located near Vincennes Indiana.

Offline ChrisSmolinski

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Re: Sterling Radiosonde Launch Evening 8 Jun 2017
« Reply #2 on: June 09, 2017, 1604 UTC »
Does someone go out and get these things or do they care about recovery at all?

They do not actively search for them, but many get returned by people that find them. There's a note on the package asking people to mail them back, so they can be re-used.

What to do if you find a weather balloon/radiosonde: http://www.nws.noaa.gov/ops2/ua/radiosonde/
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Offline Josh

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Re: Sterling Radiosonde Launch Evening 8 Jun 2017
« Reply #3 on: June 09, 2017, 1617 UTC »
Lol if I find one ima tape it to my car and drive it around!
Conveniently located near Vincennes Indiana.