HFU HF Underground

Loggings => VHF/UHF Logs, including satellites and radiosondes => Topic started by: ChrisSmolinski on June 09, 2017, 1718 UTC

Title: Unknown Radiosonde 402.3 MHz
Post by: ChrisSmolinski on June 09, 2017, 1718 UTC
Heard in the mornings and evenings. Data seems to be 4800 baud. Any ideas? https://www.youtube.com/watch?v=y7P9yz-u5tw&feature=youtu.be
Title: Re: Unknown Radiosonde 402.3 MHz
Post by: ChrisSmolinski on June 09, 2017, 2138 UTC
Turns out it is a Vaisala RS41.
Title: Re: Unknown Radiosonde 402.3 MHz
Post by: sat_dxer on June 09, 2017, 2151 UTC
Please provide the AOS and LOS times
Title: Re: Unknown Radiosonde 402.3 MHz
Post by: ChrisSmolinski on June 09, 2017, 2238 UTC
I can do better than that  ;D

Signal acquired at 1307z 8 Jun 2017
Lost at 1434z, just before it landed, 492.5 meters altitude.

I will listen again tonight and try to record it starting earlier, maybe I can guess where it is coming from. If I can hear it. I see the flight path looks a lot like the launch from Sterling yesterday evening. So maybe that is where they launch these from also?

(http://i.imgur.com/a3sGj8G.png)


(http://i.imgur.com/44QDZ8i.png)
Title: Re: Unknown Radiosonde 402.3 MHz
Post by: Teotwaki on July 20, 2017, 1807 UTC
Great catch! Any idea who is launching them?

I found a video of a teardown of the electronics package

https://www.youtube.com/watch?v=xSxtwuTS5hw
Title: Re: Unknown Radiosonde 402.3 MHz
Post by: Josh on July 24, 2017, 1622 UTC
If anybody finds one of these thingys I'll give ya $5 for it!