Short answer up front: a 2.4 GHz LHCP helical dish feed is a perfectly sensible and widely-used solution for uplinking to Esʼhail-2 / QO-100 — but don’t confuse that with…
Nooelec’s documentation lists the SAWbird+ H1 (no 50 Ω “reference” termination present) at ≈0.8 dB NF and the versions that include the internal 50 Ω reference/termination at ≈1.05 dB NF…
Prerequisites Before testing the USB relay, ensure you have the following installed: Installation Steps bash Copy Code sudo apt-get update sudo apt-get install git python3 libhidapi-dev libhidapi-hidraw0 python3-pip bash Copy…
From Alex Pettit 2-3/12/2025: Its related to the Feed Beam Pattern and the Shape ( f/D Depth ) of the dish. “All” f/D 0.35 dishes perform similarly regardless of diameter…
Great question — this is a very common confusion when first applying the Nyquist theorem to radio astronomy. You do not need a 2.8 GHz sample rate to observe the…
Here is the Nyquist explanation rewritten using pure ASCII diagrams (no Unicode). Nyquist Theorem (ASCII Version) The Nyquist theorem says: This minimum rate is the Nyquist rate. 1. Sine wave…
I have installed usbrelay softwate on Ubuntu for my 4 relay control board (which works on Windows). Running the command usbrelay detects device but can’t open it. If usbrelay sees…
REM Identify data folder structure. REM The folder structure should be LRO folder with sub-folder called data. Save .txt data files in data and any .ezb and .npz data files…
https://files.ad.thornett.net/astronet/BAA_H-Line_Meeting_011225.mp4
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