LRO-H2 Radio Telescope (150cm Solar Cooker Dish) SDRplay RSPduo Software-Defined Radio (SDR) Waveguides

Data collection video from LRO-H2 (150cm Dish & cantenna waveguide at 1420 MHz) with beta SDRplay RSPduo ezCol 01/11/2025-02/11/2025

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Link below downloads video MP4 file:

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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

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Radio observation in hydrogen line (1420MHz) Waveguides

Show field patterns at 1420 MHz, derive wave impedance vs frequency, explain why feed probes behave oddly near cutoff, and compare WR-650 vs WR-770 specifically for H-line work.

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Radio observation in hydrogen line (1420MHz) Waveguides

Why do some websites describe WR-650 waveguides as being for frequencies higher than 1420 MHz? Give equations in ASCII format.

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