RS80

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RS80
RS80Waterfall.png
Frequencies 1680MHz1,680,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
1,680,000 kHzKiloHertz (kHz) 10^3 Hz
1,680,000 kHzKiloHertz (kHz) 10^3 Hz
1,680 MHzMegaHertz (MHz) 10^6 Hz
1,680,000 kHzKiloHertz (kHz) 10^3 Hz
1,680 MHzMegaHertz (MHz) 10^6 Hz
Frequency Range 1,680 MHzMegaHertz (MHz) 10^6 Hz1,680,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
1,680,000 kHzKiloHertz (kHz) 10^3 Hz
- 1,680 MHzMegaHertz (MHz) 10^6 Hz1,680,000,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
1,680,000 kHzKiloHertz (kHz) 10^3 Hz
Mode FMFrequency Modulation
Modulation MFSKMultiple Frequency Shift-Keying
ACFAutoCorrelation Function
Bandwidth 120KHz120,000 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
0.12 MHzMegaHertz (MHz) 10^6 Hz
120 kHzKiloHertz (kHz) 10^3 Hz
0.12 MHzMegaHertz (MHz) 10^6 Hz
120 kHzKiloHertz (kHz) 10^3 Hz
0.12 MHzMegaHertz (MHz) 10^6 Hz
Location
Short Description

Valsala Radiosonde RS80. This is an analog weather balloon radiosonde.

Measures Temperature, Pressure and Humidity.
I/Q Raw Recording
Audio Sample

Frequencies[edit]

Its frequency is around 1680 MHzMegaHertz (MHz) 10^6 Hz but it tends to drift.

Decoding Software[edit]

SondeMonitor - Shareware for Windows or wine

Audio Analysis[edit]

This is the demodulated audio from power on.

RS80 Startup Audio.png

Spectrum analysis of the first 6 audio tones

RS80 Audio Frequency Plot.png

The first 6 audio tones transmitted are:

  1. 7787 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
  2. 8880 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
  3. 8731 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
  4. 9627 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
  5. 8709 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).
  6. 9047 HzHertz (Hz), unit of frequency, defined as one cycle per second (1 Hz).

Data Payload[edit]

Data is transmitted in the form of 6 frequencies. Each frequency represents one metric:

  1. Calibration parameter 1 (high)
  2. Internal temperature
  3. Pressure
  4. Calibration parameter 2 (low)
  5. Temperature
  6. Humidity

Additional Images[edit]