Summary
 
Tektronix MDO4104-6 spectrum analyzer display showing the Jupiter decametic radio emissions from 17.5 MHz to 22.5 MHz. The above spectrogram show 13 bands of radio emission from Jupiter. The bands are moving up in frequency (to the right). The bands at 17.5 MHz to about 18 MHz are weaker at the bottom of the spectrogram.

• 17.5 MHz start frequency
• 20 MHz center frequency
• 22.5 MHz stop frequency
• 5 MHz frequency span
• 5 MHz capture bandwidth
• 100 Hz resolution bandwidth
• 500 kHz per horizontal division
• 5 dBm per vertical division

The below spectrum trace show a strong Jupiter radio emission burst that is approximately 15 dB above the noise.
 

Videos

• YouTube Jupiter Radio Emissions Spectrogram with Tektronix MDO4104-6 on 2014-01-31 video
• Short Jupiter Radio Emissions Spectrogram with Tektronix MDO4104-6 on 2014-01-31 video

Observing Information

• OBS-Time: January 31, 2014, 0715 UT
• OBS-Location: Camas, WA USA, 16.6 miles East-North-East from the center of Portland, OR, USA

Radio Equipment

• Tektronix MDO4104-6 Mixed Domain Oscilloscope 50 kHz to 6 GHz spectrum analyzer.
• Mini-Circuits ZFL-500LN+ Coaxial Low Noise Amplifier minimum 24 db gain, noise figure 2.9 dB typical, 0.1 to 500 MHz, flatness +/-0.5 dB total range, powered with 15 VDC.
  • Performance data
  • Performance curves
• Mini-Circuits 21.4 MHz coaxial bandpass filter 19.2 to 23.6 MHz.
  • Performance data
  • Performance curves
• Radiowavz 15-DP11 15M dipole antenna with 1:1 Balum
  • Tuned to 20.1 MHz with RigExpert AA-54 HF antenna analyzer

Jupiter Radio Map
Io-B radio emissions.

Jupiter Radio Map was coded by Junpei Azuma, Imai Lab., Kochi National College of Technology, Japan