Marcus’s reply about Soapysdr and Sdrplay. Seems the gain settings are backwards in software.
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GPIO Labs 1420 MHz amplifier and filter
Provides an alternative to the Nooelec SAWBird H1 low noise amplifier and filter for hydrogen line radio astronomy. Currently the SAWBird is not available. I have not myself used the…
Cheap RF phase shifter boards
Readily available at cheap prices. The following is one example of many available.
Cheap signal generators
These are readily available covering wide range of frequencies. The one below is presented as an example only.
Is there a tutorial from Bonn University that demonstrates how professional astronomers convert raw radio data—particularly HI 21 cm observations?
You’re asking about a tutorial from Bonn University that demonstrates how professional astronomers convert raw radio data—particularly HI 21 cm observations—into calibrated intensity measurements. Here’s what I found: Resources at…
How professionals convert raw telescope voltages into intensity maps of hydrogen in different parts of the Milky Way
Great question, Andrew — this is right at the heart of how the Milky Way has been mapped in neutral hydrogen (HI) at 1420.405 MHz. Professional radio astronomers follow a…
Hypernovae
Astronomers have detected events that we classify as “hypernovae.” The word hypernova isn’t an official supernova classification but is widely used to describe the most energetic stellar explosions, usually linked…
What Is the Lichfield Radio Observatory?
Here’s a peek at the Lichfield Radio Observatory (LRO) setup—featuring some of its unique equipment and data visualizations. What Is the Lichfield Radio Observatory? The Lichfield Radio Observatory (LRO) is…
Aperture Synthesis
Aperture synthesis is one of the most powerful techniques in radio astronomy, and it’s the reason we can get very sharp images of the sky even though radio waves have…
RTL-SDR Blog V3 dongle is based on the R820T2 tuner chip
The RTL-SDR Blog V3 dongle is based on the R820T2 tuner chip. Its useful bandwidth is limited by the USB 2.0 bus and the RTL2832U demodulator chip. You can push…