Compare RSP1 RSP2 RSPDuo HackRF PlutoSDR USRP. Here’s a practical, spec-level compare of the popular SDRs you named, with notes for radio astronomy / interferometry use. Device RX freq. range…
https://www.astronomy.me.uk/wp-content/uploads/2025/10/DSES251016_10.txt Not worked! This first attempt to generate GNU Radio Companion GRC script with SDRplay RSPduo SDR which creates data files in ezRA’s ezCol.py .txt format does not appear to…
Generally, the bigger the better within practical limits. Consider its orientation (N-S or E-W), where it will be located, will it be moved, will the mount support the weight of…
Building a horn antenna tuned for the 21 cm (1420.405 MHz) hydrogen line is a popular and effective way to do amateur radio astronomy. A horn antenna is especially good…
I asked ChatGPT how to do this, and here is its suggestion:
WR-650 already covers 1.12–1.70 GHz, so 1.420 GHz sits comfortably in-band—you don’t need to resize the guide. What you do need is a simple, well-tuned coax-to-waveguide probe with a backshort…
The WR14 waveguide (also known as WH14) is a rectangular waveguide used for millimeter-wave applications in the K-band. Here are the key technical specifications: Parameter Value Designation WR14 (WH14) Frequency…
The WR137 waveguide is a rectangular waveguide commonly used in the C-band frequency range, particularly for radar, satellite communications, and radio astronomy work just below the hydrogen line. Here are…
The WR-90 waveguide is a rectangular waveguide commonly used for microwave signals, particularly in the X-band frequency range. Here’s a quick technical summary: Parameter Value Waveguide size (inside) 0.900 in…
Do you mean the angular size of the Great Orion Nebula (M42)?
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