The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →You can explore Radio JOVE radio astronomy data without buying equipment: use Radio-Sky Spectrograph (RSS) in Client Mode to view a live stream, or browse the project’s archive of observations. An SDR receiver becomes useful when you want to collect your own signals, but it is only one part of the setup: you also need an appropriate antenna, a computer, and compatible observing software.
View Radio JOVE observations without building a telescope
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Open NASA Radio JOVE’s Getting Started page. It links to live spectrograph streams and a web-accessible archive of data submitted by project participants.
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To connect to a streaming observation, download Radio-Sky Spectrograph for Windows and choose Client Mode. The project’s remote streams let you inspect frequency-versus-time displays without assembling a receiver and antenna.
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In the display, frequency runs along one axis and time along the other; color represents relative signal intensity. Compare the observer, timestamp, and frequency coverage when looking at records. A bright trace is a signal to investigate, not proof by itself that the source was celestial: the project also observes terrestrial emissions.
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- v5 has a frequency capability of 100kHz to 1.75GHz and up to 3.2MHz of instantaneous bandwidth. HF reception below 25MHz is accomplished with direct sampling and requires a suitable antenna. We recommend using a Balun One Nine to make a DIY long wire or dipole antenna (sold separately, product ID B08HGSYB7R or B00R09WHT6)
- Though the direct sampling implementation of NESDR SMArt v5 is much better than any other RTL-SDR, we still recommend using an upconverter like the Ham It Up for a more fulfilling HF experience (sold separately, product ID B076CYK8XZ)
Radio JOVE’s Getting Started page describes observations of emissions from the Sun, Jupiter, the Galaxy, and Earth in the 15–30 MHz range. The project’s 2.1 setup has a nominal 16–24 MHz span, and NASA identifies 18–22 MHz as a particularly useful range for Jupiter. These are decametric, high-frequency observations—not a general-purpose radio astronomy receiver recipe.
What an SDR receiver does—and what it does not do
An SDR, or software-defined radio, converts received radio signals into data that computer software can process and display. It does not collect signals from the sky on its own. Radio JOVE’s receiver manual puts it plainly: “To function as a radio astronomy telescope, the receiver requires connection to a proper radio antenna.” The antenna, cabling, receiver, and software together form the observing system.
In a spectrogram, software processing—including a Fast Fourier Transform—turns sampled signal data into a plot of intensity over frequency and time. In an example in the Radio JOVE manual, solar bursts appear as enhanced yellow-red vertical features lasting seconds to minutes. The chart represents recorded signal behavior for interpretation; it is not a photograph of the sky. See the Radio JOVE 2.1 receiver manual for the project’s display examples and setup details.
The documented Radio JOVE 2.1 receiver and software
Radio JOVE’s current 2.1 overview names the SDRplay RSP1B as its receiver. Its broad specifications are a 14-bit receiver spanning 1 kHz to 2 GHz, with up to 10 MHz of visible bandwidth. Those figures describe the receiver, not a guarantee that any antenna or software setup can observe every frequency. For the Radio JOVE use case, the receiver is paired with a suitable antenna and tuned around 20 MHz. NASA says other receivers may work but does not guarantee compatibility. Consult the Radio JOVE 2.1 overview before choosing an alternative.
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- Turn your computer, phone or tablet into a radio scanner/ham radio receiver that can receive nearly all RF signals! Compatible with Windows, Mac OS, Linux, and Android
- NESDR SMArt RTL-SDR v5 can be used for the reception of broadcast AM radio, broadcast FM radio, shortwave radio, CB radio, public security radio, trunked radio, air traffic control, ACARS (plane-ground communications), ADS-B (plane tracking), AIS (ship tracking), POCSAG (pagers), NOAA and GOES weather satellites (weather images), weather balloons, radiosondes, DAB radio, DVB-T video, Inmarsat, Iridium, and so much more!
- The best-performing low-cost RTL-SDR available anywhere! Compared with RTL-SDR v3, HF SNR is improved by up to 15dB, VHF & UHF SNR is improved by up to 6dB, tuning accuracy is improved by an average of 4x, and the frequency range is expanded all the way down to 100kHz
- v5 has a frequency capability of 100kHz to 1.75GHz and up to 3.2MHz of instantaneous bandwidth. HF reception below 25MHz is accomplished with direct sampling and requires a suitable antenna. We recommend using a Balun One Nine to make a DIY long wire or dipole antenna (sold separately, product ID B08HGSYB7R or B00R09WHT6)
- Though the direct sampling implementation of NESDR SMArt v5 is much better than any other RTL-SDR, we still recommend using an upconverter like the Ham It Up for a more fulfilling HF experience (sold separately, product ID B076CYK8XZ)
The version 1.0 Radio JOVE setup manual, dated March 2025, documents a Windows-oriented software chain:
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SDRuno controls the SDRplay receiver.
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SDR Console connects to and controls the receiver in the updated workflow.
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SDRc2RSS routes data to the display.
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Radio-Sky Spectrograph displays or records signal strength across frequency and time.
The manual says its Radio JOVE-specific software supports Windows 7 or higher and does not support Mac or Linux. Software and compatibility can change, so check Radio JOVE’s current 2.1 setup information before installing. Instructions also vary by receiver: the RSP1A was replaced by the RSP1B in 2025, and the RSP1B workflow uses SDR Console in the updated chain, as noted on the project’s Radio Telescope introduction page.
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Choose and place an antenna for the observation
Radio JOVE recommends a single- or dual-dipole antenna for the project; its receiver manual says two dipoles are needed to receive weaker Jupiter and solar emissions. The 2.1 overview describes a dual-dipole array and advises keeping it away from nearby power lines and buildings, which can contribute electrical noise. Follow the project’s current antenna instructions and safety guidance, especially when working near overhead power lines. The receiver and antenna requirements are described in the 2.1 overview and receiver manual.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Move from public observations to collecting your own data
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Learn the display first. Use a stream or archived observation to get comfortable reading its frequency and time axes and relative signal intensity before troubleshooting new hardware.
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Read the project instructions. Review the current Radio JOVE 2.1 receiver and antenna material before assembling a system. Confirm that the receiver, antenna, computer operating system, and software chain match the intended workflow.
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Assemble the antenna and receiver safely. Connect the appropriate dipole setup to a compatible SDR, observing the project’s placement and safety guidance.
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- Can tune from 500 kHz to 1.7 GHz and has up to 3.2 MHz of instantaneous bandwidth (2.4 MHz stable). (HF reception below 24 MHz in direct sampling mode with reduced performance). Please note RTL-SDR dongles are RX only.
- Please follow the quickstart guide linked in the included the manual for installation of the drivers and free software. Please feel free to contact us via Amazon messaging for technical support - we're happy to help
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Install and configure the documented software. Use the Radio JOVE instructions for the specific receiver model; do not assume RSP1A instructions transfer unchanged to the RSP1B.
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Record a test spectrum and inspect it. Check the displayed frequency coverage and look for a stable baseline or obvious interference before interpreting any feature as a candidate observation.
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Share observations if participating. Radio JOVE provides community and archive routes for participant data; consult its Getting Started page for current ways to contribute.
Keep the observing target in the right frequency range
The Radio JOVE 2.1 configuration is for the project’s low-frequency, decametric work around 20 MHz. It is not a setup for observing the neutral hydrogen line near 1420 MHz (21 cm). That is a distinct receiver, antenna, and signal-processing project; the RSP1B’s broad frequency specification alone does not make the Radio JOVE antenna and software chain suitable for it.
NASA Science lists a published estimate of $300–$500 for a radio telescope kit and antenna parts. This is the page’s estimate, not a current retailer quote; see NASA Science’s Radio JOVE page for the project and participation information.
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