This webpage provides access to live data from the University of Florida Radio Observatory (UFRO).  The observations are made at several discrete frequencies in the frequency range of 18-32 MHz which is the optimum range for observing Jupiter from ground based stations. Observations of Jupiter's radio emission are performed between dusk and dawn when the ionosphere is transparent to these low radio frequencies and the level of interference is low. Jupiter's radio emissions are bursty and sporadic in nature; however, using observations performed at UFRO over a period of many years and an statistical analysis it is possible to generate predictions of activity .

The radio telescope used to observe the emission consist of two arrays of 8 conical log-spiral antennas (Tee Pee) each and a computer controlled data acquisition system. One of the arrays is right hand circularly polarized (RHP) and the other is LHP.

 The system performs automatic observations of Jupiter's decametric radio emission without the need of the presence of an observer. A total of 18 data channels are sampled at 2 samples/sec/channel and the digital data is stored in a hard drive. The computer controls the data sampling, the calibration of the data, and the phasing of the antenna. To view a block diagram of the data acquisition system, please click on the link below. 

                                     Block Diagram

System Requirements:
  • 28.8K or faster modem
Recommended Software:


Instructions for viewing live data

Streaming Live Data

**We strongly recommend using Netscape as the Web browser to see 
the smooth scrolling real time virtual pen recorder traces. **

Live data from UFRO can be seen in the form of a virtual chart recorder at the Internet Jupiter Radio Observatory (IJRO) Website. The traces of the chart recorder displays the intensity versus time of the right and left circularly polarized components of the emission at 18, 20, and 22 MHz, and the 20 MHz  Radio Jove system. The signals are digitized at the UFRO site and send through the network to a server located at Kochi National College of Technology in Japan.

  • Please click on the link "Streaming Live Data" to see a scrolling display of the signals . Note that the sensitivity of UFRO Tee Pee system is high in comparison with the RadioJOVE receiving system.

  • Click on Run.

  • On the next web page, select "Refresh Rate (10sec)" and "Run"

  • To see a smoother scrolling, the refresh rate can be reduced to 3 sec. This faster refresh rate may not work for slow speed connections.

Jupiter's emission appears as deflections above the steady galactic background emission when a "storm" is in progress at the time of serving mode. The different channels in the chart recorder are labeled from top to bottom as 18TP/R, 18TP/L, 20TP/R, 20TP/L, 22TP/R, 22TP/L and 20RJ. The time at the bottom is UT.

Streaming Live Data

Streaming Video

The Streaming Video webpage  displays the data acquisition screen which shows the output of the 18, 20, and 22 MHz receivers, both RH  and LH circularly polarized component. All three receivers are connected to the TP  antenna array. The time marks at the bottom of the screen are separated by one  minute. The whole screen represents 5 minutes.  The streaming video will display the data acquisition screen only when data acquisition is in progress at the Radio Observatory. At all other times, the link shows a static image of the computer screen with the current universal time (UT), the UT of the end of the previous data acquisition session,  the beginning UT of the next data acquisition session, and other information. Please click on the link below to go to the streaming video page.

Streaming Video

Once you go to the streaming video page please click in Web demo and then choose 640x480 Motion JPEG Video.

Streaming Audio

At the present the audio streaming schedule is the following:
Audio from 20RJ receiver and antenna 10:00 AM-15:00 EST (15:00-20:00 UT)
from INSPIRE receiver 15:00-00:00 AM (20:00-5:00 UT)
from 20TP/RHP receiver 00:00 -10:00 AM (5:00 -15:00 UT)

 The combined (LH and RH polarizations) streaming audio output of  the 20 MHz receiver connected to the TP antenna has a delay of about 12 seconds with respect to the information displayed on the data  acquisition screen. This delay can be reduced to 6 seconds by adjusting the buffer size.

Streaming Audio-High Quality (for fast connections)

Streaming Audio - Standard Quality

Sound Samples

For sound samples of L and S Bursts, and solar bursts, please click on the link below:

UFRO Sound Samples