Radio observation in hydrogen line (1420MHz)

At last! Brian Coleman hydrogen line feed mounted somewhere near focal point on LRO-H2 solar cooker radio telescope

By Admin

The supports now can be altered in length to optimise focal position.

By Admin

Related post

Radio observation in hydrogen line (1420MHz) SETI Horn of Plenty (Hydrogen Line Pyramidal Horn Design Antenna)

The gain of a hydrogen horn or dish depends on its aperture which makes sense as bigger aperture means more light collected. But how does this work with a Yagi antenna tuned to hydrogen?

Admin
Radio observation in hydrogen line (1420MHz) SETI Horn of Plenty (Hydrogen Line Pyramidal Horn Design Antenna)

It is commonly stated that acceptable error in flare angle on a SETI Horn of Plenty is lambda/4. Why is this amount chosen?

Admin
Radio observation in hydrogen line (1420MHz) SETI Horn of Plenty (Hydrogen Line Pyramidal Horn Design Antenna)

Can an existing SETI Horn of Plenty (Hydrogen Line Horn) be extended by adding an extension on the front? Practical answer and more detailed explanation of physics involved.

Admin

Leave a Reply

Your email address will not be published. Required fields are marked *


This site uses Akismet to reduce spam. Learn how your comment data is processed.

You missed

Uncategorized

What does 0.73 dB above background equate to in dBi for hydrogen line horn? I have a typical SETI of Plenty, 4 feet long and 3 feet wide, at 1420 MHz.

Uncategorized

Calculating gain achieved with LRO SET Horn of Plenty using RTL-SDR V4 software-defined receiver 29/5/2026

Uncategorized

Table comparing dB and dbi gain of SETI Horn of Plenty compared to 1m dish, 1.5m dish, 2m dish, 3m dish, 17 element patch Yagi, 86cm Ptarmigan Triffid 4 x 4 dipole array.

Uncategorized

Would the Active Antenna Amplifier (model AAA-1C) make a good masthead amplifier for a VLF loop antenna (SIDs)?