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When I search for WR650 waveguides, I get results for 12-26GHz rather than correct wavelengths that cover 1.4GHz. Why is that?
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…
WR650 Waveguide for hydrogen line radio astronomy
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…
Block diagram, parts list and checklist for using coaxial cable to waveguide adapter for hydrogen line radio astronomy
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…
How can I use a WR-650 coaxial cable to waveguide adapter as part of a hydrogen line receiving system?
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…
How well would following work for hydrogen line LHCP HELIX DISH FEEDER 2.4GHZ (S-BAND) for OSCAR-100 / Es -HAIL -SAT?
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…
Losses at the masthead in hydrogen line systems
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…