A cantenna, essentially a form of circular waveguide, is a practical tool used in radio astronomy to detect the hydrogen

This was a test inside house so hydrogen signal not detected.

Datasheet can be downloaded from link below – this was accessed 4/1/2026: https://www.astronomy.me.uk/wp-content/uploads/2026/01/Nooelec_Sawbird_H1_Barebones_Datasheet_Revision_1040126.pdf

These mesh dishes are certainly fine for the Hydrogen line and are probably good up to about 3 or 5

A cantenna, essentially a form of circular waveguide, is a practical tool used in radio astronomy to detect the hydrogen

Here are some good internet resources — guides, tutorials, and reference material specifically useful for getting into hydrogen-line (21 cm, ~1420

A power user is someone who uses a product, system, or piece of software far beyond basic or casual use,

Astronomers determine a star’s age using starquakes through a technique called asteroseismology. The basic idea is that a star’s internal structure changes in

Key messages from above table: The probe length does not change with cantenna diameter at the same design frequency. The

The following calculations were developed with help of the calculator at https://3g-aerial.biz/en/online-calculations/antenna-calculations/cantenna-online-calculator