Amateur radio astronomers can indeed detect natural astrophysical masers, though the practical options are limited by sensitivity, equipment, and local regulations. Here’s a breakdown: 1. Hydrogen (H I) Masers 2. Hydroxyl…
Links to two useful calculators below (I have nothing to do with these websites): https://3g-aerial.biz/en/online-calculations/antenna-calculations/cantenna-online-calculator https://www.everythingrf.com/rf-calculators/pyramidal-horn-antenna-gain-calculator
Short answer: Yes — but with caveats. A square/coax-to-waveguide adapter can act as a waveguide feed/aperture for a 1.5 m dish at the hydrogen line, provided its internal dimensions support…
It happens because “WR-650” means two completely different things depending on context, and most search engines don’t know which one you want. 1. The actual WR-650 (large waveguide) is for…
If you want a rectangular waveguide that works well around 1.4 GHz, a common standard choice is WR650. ✅ Why WR650 at ~1.4 GHz ⚠️ What you lose by going too small…
Here’s a ready-to-use block diagram plus a practical minimal parts list and quick build/test checklist so you can turn your WR-650 waveguide-to-coax adapter into a full waveguide feed for 1420…
Good questions. First, to be clear — by “convert … to a full waveguide” I assume you mean: you have a (a waveguide‑to‑coax adapter) and you want to use it…
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…
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