In a radio telescope’s noise budget, spillover and ground reflection are two distinct ways unwanted radiation enters your receiver. They’re related but not the same: Spillover Spillover is receiver noise…
You can get a Raspberry Pi disk image in a few different ways depending on what you mean: 1. Downloading an official Raspberry Pi OS image If you simply want…
Material choice affects an antenna’s efficiency, bandwidth, durability, and mechanical practicality. Here’s a concise breakdown of what really matters: 1. Electrical Conductivity This is the biggest factor. High-conductivity metals (copper,…
Andrew Thornett: I could see potential benefit for having LNA at constant temperature. The easiest way to achieve that is to cool it below any likely outside temperature – avoiding…
Pulsars don’t have a single “pulsar frequency” the way spectral lines do — instead they emit broadband radio noise with periodic pulses, and what we observe are: Here are the…
sudo apt install git cmake build-essential gqrx-sdr cubicsdr libsoapysdr-dev soapysdr-tools gr-osmosdr uhd-soapysdr
This might be of interest to folks interested in amateur hydrogen line radio astronomy – it is the description of the SAWBird H1 directly from Nooelec’s website today 23/11/2025: https://www.nooelec.com/store/sawbird-h1.html…
There are quite a few different Nooelec RTL-SDR dongle versions, and the differences mostly come down to tuner chip, frequency range, stability / oscillator, size, and extra features like bias-tee.…
How to run snap update on Ubuntu when says can’t update it as running? Quick answer – summary of discussion below: Use a Loop to Stop All Snap Apps in…
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