Radio observation in hydrogen line (1420MHz)

Round cantenna and square pyramidal horn calculators available online

By Admin December 8, 2025

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

By Admin

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LRO-H1 Radio Telescope (86cm x 86cm Ptarmigan Triffid 4x4 Dipole Array) Radio observation in hydrogen line (1420MHz)

Screenshot LRO-H1 data collection ezCol-py with RTL-SDR v3–23/1/2025@1240

Easy Radio Astronomy Software (ezRA)

How to use GLon.py in ezRA (Easy Radio Astronomy)

Easy Radio Astronomy Software (ezRA) LRO-H2 Radio Telescope (150cm Solar Cooker Dish) Radio observation in hydrogen line (1420MHz)

Hydrogen Line peak (H-Line, 1420 MHz) screen capture from ezCol.py capture software (part of ezRA suite) collecting data from a RTL-SDR Blog v3 Software Defined Radio on LRO-H2 radio telescope (150cm dish) on 22/1/2026

Radio observation in hydrogen line (1420MHz)

What is the impedance of 1420 Mhz (1.42 GHz) [atomic neutral hydrogen line] dipole?