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Welcome to Radio JOVE 2.0
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Dear Radio JOVE Community, The Radio JOVE Project is a NASA Partner citizen science project where participants purchase, assemble, and operate their own 16-24 MHz radio spectrograph to observe solar, Jupiter, Galactic, and Earth-based radio emissions. Learn to become a citizen scientist and contribute scientific-quality data to our data archive. Visit Getting Started to learn how to participate in Radio JOVE. Regards, The Radio JOVE Team
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Good day all, Picked up some "Diamond Ionosondes", ground wave reflections, broken equipment? Thoughts? Carl Wasilla, AK
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Good evening... Just two events captured today. The persistent, very strong signal at about 21 Mhz is odd/weird. There are no American (ARRL) amateur radio contests in May that might explain it. ...bill...
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Hi, This is around the same time frame as the reported X1.1 (R3) flare. Some faint downward drifting features and RF fadeout. No data available from Learmonth, some activity seen on the Owens Valley 80MHz range spectrogram. Would been keen to see if someone else observed this. Regards, Luke. Virus-free.www.norton.com
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Below is a chart showing reported solar activity by this group since it started. This was done with ChatGPT's help and only includes new posts with an image and using keywords. It is just an approximate value. The idea was to see if our activity on this group approximates the solar activity (using sunspot number because it was easy to get) and as an exercise for me to see if something might be done to facilitate archiving these curated reports. All of the activity of this group was downloaded as a single 12 GB mbox file which was then used to produce a single filtered CSV file. GPT then analyzed the CSV file and produced a python program the does the histogram. -- Jim Sky radiosky at radiosky dot com http://radiosky.com
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major flare. posible X 0202 UT May 25 2025
Possible X flare happening now - Tom
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LINEARITY - MEASUREMENTS
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I was intrigued by the calibration of the standard RJ setup. While I do not use that setup, I decided to measure what I use for other purposes, including RJ. So, have a read of the attachment. I'm using the AirSpy Discovery HF+ to test the linearity. The system is diagrammed to start and then, I ran an HP generator up by 10 dB steps ultimately into Radio SkyPipe. I was somewhat disappointed at the non-linear behavior of the system. Please have a read of the attachment. CONCLUSION: Yes, calibration is needed if linear response to the input is required!!! Dave - W?LEV
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Good evening: Finally, a bit of solar from today. John
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The FFT and nuclear weapons
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Here's a very interesting explanation of how and why the modern FFT came to exist in the 1960s, then we discover that Gauss had already invented it, but never published it. Veritasium - The Most Important Algorithm of All Time https://www.youtube.com/watch?v=nmgFG7PUHfo -- Dave
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Here are some views of the fantastic solar earlier today from the Dark Sky Observatory. The first shows the entire "storm", and the remaining spectrographs show some of the details. Richard
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Good evening: All I have to offer are two weird solar emissions. I think they are solar because both coincide with characteristic spikes on Skypipe. Did anyone else see them? John
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Hi folks, I too am having trouble getting a good Cal curve. Using the standard Radio JOVE setup with the RSP1B receiver. I managed to get a decent Cal curve using these settings: RF Gain = 9 IF Gain = -45dB Visual Gain = -40 dB SDRc2RSS Gain = 2.0 Not quite linear, but not too bad. I did not adjust the Visual Gain per Richard¡¯s comment below, but maybe I don¡¯t understand it either. See screenshot below. Chuck
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Hi All, A weak signal from Io-B - not mutch but a signal - I think ! -- Aloha - john s,
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Hi All, A minor sunburst over denmark latitude 55! Not much but it?s there -- Aloha - john s,
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Good evening....two weak events....maybe A lot of strong, local lightning recently. Off-topic...many evenings after submitting an events' report I'll turn on my ham radio and spend some time using FT-8 (digital mode) on the various bands starting at 10m (28.0 Mhz) then 12 m (24.9 Mhz), 15m (21.0 Mhz),....18Mhz, 14Mhz...down to 3.6Mhz. The last few evenings here from 28 to 18 Mhz I have heard & contacted almost no stations ANYWHERE....quite unusual. Fun with radio.
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Hi, Some weak solar and RF fade out. Also see comparison from Learmonth observatory around the same timeframe. Regards, Luke. Virus-free.www.norton.com
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Update to "RX888 On SDR Console, SDRc2RSS", and RSS Documentation
FYI The 1/29/2025 pdf document "RX888 On SDR Console, SDRc2RSS and RSS" was updated 5/17/2025 and is attached below. The Chinese RX888/RX888 MKII is fabricated by several different manufacturers in China. Some are just clones or redesigned SDRs. A totally new design is in progress to correct known issues such as overheating, PCB runs too close together, and other design issues, etc. As with some eBay items, you never know what your going to get. The RX888/RX888 MKII as well as other SDRs may be used with SDR Console and SDRc2RSS and RSS on an experimental basis. The RSP1B calibration process can only be used as a guide. Calibration accuracy cannot be guaranteed. For an accurately calibrated spectrograph the Radio JOVE supported SDRplay RSP1 or RSP1B are suggested. Thank you. Larry K4LED https://101science.com/RX888CONSOLE.pdf
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Good Day All! Just a few solars from Wasilla.... Carl Wasilla, AK USA
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16 MAY 2025
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Observations from Grafton, WV. Doing something different tonight (EDT). Some of the files are obvious Solar and some I have no idea what they are. To see them go to http://home.ebersole.net/16_may/ ~Duane
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Good evening: Solar from today. John
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Image Name
Sat 8:39am
Sat 8:39am