Formula for speed of light, and why it is a constant
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What is the formula for the speed of light? Why is it considered a constant if there is a formula? Great question! Let’s unpack it step by step: 1. The…
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Normalising data files from multiple systems in ezRA
Ted Cline – N0RQV:secret ezCon command option …………. -ezConAntXTVTLevelL 1.3 -3.2 (multiply all AntXTVT sample values and add) Use per file (or batch files) to normnalise
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…
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…
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…
Jason Burnfield’s Design Calculator for Offset 3m Radio Astronomy Dish
Jason has set himself the challenge of designing and building such a dish – first step is design and he has created an Excel Spreadsheet calculator for this purpose –…
Design of offset satellite dish – is it half a parabola?
An offset satellite dish is not literally “half a parabola,” though it is related to a parabola. Here’s the distinction: So, instead of being “half a parabola,” an offset dish…