How to switch your Linux keyboard layout to US (United States)
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Here’s how to switch your Linux keyboard layout to US (United States), either temporarily or permanently. 🧩 Option 1 – Temporary switch (immediate effect) Run this in a terminal: That…
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Comparison SDRplay RSPdx and RSPduo
Here’s a comparison of the SDRplay RSPdx vs RSPduo (and notes about the newer RSPdx-R2), aimed at how they differ for radio astronomy, HF/VLF/LF work, and general SDR use. If…
Instructions on how to install gr-radio-astro (contains set of GNU Radio modules required for DSPIRA GNU Radio Projects) & stand alone USB Flash Drive with preinstalled software & installing on a Raspberry PI
The following is an extract from the WVURAIL/gr-radio-astro Github repository giving installing instructions for this important pre-requisite needed to use DSPIRA GNU Radio GRC flow-graphs. I have also included instructions…
Problems running DSPIRA GRC (GNU Radio Companion) flow-graphs due to missing gr-radio_astro out-of-tree (OOT) module in GNU Radio installation
I am experiencing errors when I try to tun DSPIRA GRC (GNU Radio Companion) flow-graphs due to missing gr-radio_astro out-of-tree (OOT) module in my Windows GNU Radio installation. What is…
Stressed dish antennas for radio astronomy
A stressed dish (or stressed-skin parabolic reflector) is a lightweight reflector design where the parabolic surface is formed by tension and stress in the materials, rather than machining a rigid…
Block diagrams of proposed GNU Radio Interferometer 4/10/2025
https://www.astronomy.me.uk/wp-content/uploads/2025/10/rspduo_interferometer_full_block_diagram_annotated_251004_172229.pdf https://www.astronomy.me.uk/wp-content/uploads/2025/10/rspduo_interferometer_simplified_block_diagram_251004_171113.pdf
Comparison between the RTL‑SDR Blog V3 and RTL‑SDR Blog V4,
Here’s a detailed comparison between the RTL‑SDR Blog V3 and RTL‑SDR Blog V4, along with practical implications (especially for your antenna-wire setup). If you like, I can summarise a “which…
Adjusting spectrum display’s Y-axis (dB range) in SDRConnect
In SDRconnect the controls for adjusting the dB scale / Y-axis (reference level, dB range) are under the “Primary SP display settings” section in the left panel. (SDRplay) Here’s exactly…
Adjusting spectrum display’s Y-axis (dB range) in SDRUno
In SDRUno, the spectrum display’s Y-axis (dB range) can be adjusted so you can see more (or less) of the signal rather than just the top. Here’s how: 👉 In…
Running Two separate SDRplay RSPduo Devices in SDRuno
You actually have two completely separate RSPduo units, and you want to see both running in SDRuno simultaneously. 👍 Here’s how you can set that up: 🖥️ Running Two RSPduo…