I would like to be able to tune my antenna for my VLF to match it. Currently I am using a 10 uF capacitor, which seems to be doing a…
The current best estimate for the total mass of the Milky Way is: 🌌 ~1.0–1.3 trillion solar masses That is: (1–1.3) × 10¹² times the mass of the Sun 🔎…
Astronomers use parsecs because they fall naturally out of how stellar distances are measured — by parallax. 1) It comes directly from geometry A parsec is defined using stellar parallax:…
In the UK, true in-band transmissions at 1418–1422 MHz are essentially nonexistent because this sits inside the internationally protected 1400–1427 MHz passive band allocated to radio astronomy and Earth-exploration (passive).…
The is designed specifically for hydrogen-line (21 cm, ~1420 MHz) reception by combining a SAW band-pass filter with low-noise amplifier stages. According to the manufacturer’s published specs: 📶 Bandwidth /…
In the United Kingdom, the L-band around the 1420 MHz hydrogen line is formally recognised and protected for passive scientific use, meaning emissions by other services are prohibited or very…
I searched available parts online — but there really aren’t any continuous mechanical variable capacitors around ~10 µF on Amazon, eBay, or typical component suppliers. Mechanical variable capacitors (rotary types)…
There are 1,000 picofarads (pF) in 1 nanofarad (nF).• 1 nF = 1,000 pF• 1 pF = 0.001 nFThis is a straightforward conversion based on the metric system where the…
There **are numerous online references linking AirSpy software-defined radios (SDRs) with software-defined radio use in radio astronomy, both in project guides and community discussions about detecting astronomical signals. Here are…
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