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Author Topic: Vaisala RS41 402.3 MHz Evening 9 Jun 2017  (Read 1171 times)

Offline ChrisSmolinski

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Vaisala RS41 402.3 MHz Evening 9 Jun 2017
« on: June 10, 2017, 1214 UTC »
These definitely seem to be coming from Dulles.  I did not hear the Sterling/NWS launch last night on 401.0 MHz, so maybe these  Vaisala radiosondes have a stronger signal?

It is amazing how much better I receive these vs the 1680 MHz radiosondes. Those I would only pick up if they got north of I-70. These I can pick up shortly after launch.

Actual path:


Predicted path:


Plot of reported altitude:
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: Vaisala RS41 402.3 MHz Evening 9 Jun 2017
« Reply #1 on: June 10, 2017, 1434 UTC »
Is there a reason why they only go to around 35k feet before the balloon pops? I'd want to know what's going on higher if I had the choice, you know, like via a sturdier balloon?
Conveniently located near Vincennes Indiana.

Offline ChrisSmolinski

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Re: Vaisala RS41 402.3 MHz Evening 9 Jun 2017
« Reply #2 on: June 10, 2017, 1558 UTC »
Is there a reason why they only go to around 35k feet before the balloon pops? I'd want to know what's going on higher if I had the choice, you know, like via a sturdier balloon?

That's 35k meters, which is about 115k feet. Once you get that high, you're essentially above all the weather.

I am looking further into the raw data, and found the string that is sent with the radiosonde model number, it is a RS41-SGP. Data sheet here: http://www.vaisala.com/Vaisala%20Documents/Brochures%20and%20Datasheets/WEA-MET-RS41SGP-Datasheet-B211444EN.pdf
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: Vaisala RS41 402.3 MHz Evening 9 Jun 2017
« Reply #3 on: June 10, 2017, 1751 UTC »
Lol thanks for correcting my error!
Conveniently located near Vincennes Indiana.