We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

« previous next »
Pages: [1]

Author Topic: Unknown Radiosonde 402.3 MHz  (Read 3643 times)

Offline ChrisSmolinski

  • Administrator
  • Marconi Class DXer
  • *****
  • Posts: 32476
    • Westminster, MD USA
    • View Profile
    • Black Cat Systems
Unknown Radiosonde 402.3 MHz
« 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
Logged
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline ChrisSmolinski

  • Administrator
  • Marconi Class DXer
  • *****
  • Posts: 32476
    • Westminster, MD USA
    • View Profile
    • Black Cat Systems
Re: Unknown Radiosonde 402.3 MHz
« Reply #1 on: June 09, 2017, 2138 UTC »
Turns out it is a Vaisala RS41.
Logged
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline sat_dxer

  • DX Legend
  • ******
  • Posts: 2371
    • View Profile
Re: Unknown Radiosonde 402.3 MHz
« Reply #2 on: June 09, 2017, 2151 UTC »
Please provide the AOS and LOS times
Logged
Most times & frequencies posted are only an approximation.
Wishing the 1980's PopComm was still around.

Offline ChrisSmolinski

  • Administrator
  • Marconi Class DXer
  • *****
  • Posts: 32476
    • Westminster, MD USA
    • View Profile
    • Black Cat Systems
Re: Unknown Radiosonde 402.3 MHz
« Reply #3 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?




« Last Edit: June 09, 2017, 2251 UTC by ChrisSmolinski »
Logged
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

Offline Teotwaki

  • DXing Phenomena
  • *******
  • Posts: 3170
    • California
    • View Profile
    • My adventures are at Sun To The North
Re: Unknown Radiosonde 402.3 MHz
« Reply #4 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
Logged
Jim
NRD-525, Elecraft KX3 and Elecraft PX3 Spectrum Display
76' end fed long wire & 66' off-center fed dipole for 10/20/40 meters
Orange County, SoCal, The better half

Offline Josh

  • DXing Phenomena
  • *******
  • Posts: 4323
    • View Profile
Re: Unknown Radiosonde 402.3 MHz
« Reply #5 on: July 24, 2017, 1622 UTC »
If anybody finds one of these thingys I'll give ya $5 for it!
Logged
We do not encourage any radio operations contrary to regulations.
Pages: [1]
« previous next »
 

HFUnderground T-Shirt
HFUnderground Garden Flag
by MitchellTimeDesigns