Smallest antenna that can detect hydrogen in Milky Way
Detecting the 21 cm hydrogen line (the characteristic emission from neutral hydrogen in the Milky Way) requires a radio antenna
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astronomy.network The Website of Lichfield Radio Observatory (LRO)
Andrew Thornett, Lichfield, England, M6THO, andrew (at) thornett (dot) net
Month: January 2025
Compare performance and attenuation standard LMR-600 and flexible LMR-600 coaxial cables
This page has been created with the help of ChatGPT 11/1/2025. Compare performance and attenuation standard LMR-600 and flexible LMR-600
Read moreComparison of results from processing LRO-H1(Ptarmigan Array Data) collected by ezCol.py (ezRA software suite) with two filter arrangements 1st to 8th January 2025
Filter arrangement 1: Ptarmigan Dipole Array ==> WT Microwave 1418-1422 MHz Cavity Filter ==> Nooelec SAWBird LNA ==> RTL-SDR Blog
Read morePotential arrangements of Nooelec SAWBird H1, Nooelec LANA low-noise amplifier, and WT Microwave 1420MHz narrow band cavity filter, to improve radio-astronomy detection of hydrogen line.
Insertion Loss in Nooelec SAWBird H1: The Nooelec SAWbird+ H1 is a self-contained low-noise amplifier (LNA) module designed for hydrogen
Read moreMapping LRO-H1(Ptarmigan)data 290524-180824 to sphere (inside & outside views) 5/1/2025
These plots have been produced using data from Lichfield Radio Observatory (LRO) between 29 May 2024 and 18 August 2024,
Read moreAlex Pettit’s evaluation of October 2024 data set from my Ptarmigan Array radio telescope compared to two other radio telescope systems 6/1/2025
Shows very low power levels on my system compared to the two comparators. Andy
Read moreImportance of placement of LNA (Low Noise Amplifier) close to dish and not close to receiver
From: ‘Alex P’ via Society of Amateur Radio Astronomers <sara-list@googlegroups.com>Sent: 04 January 2025 10:28To: Society of Amateur Radio Astronomers <sara-list@googlegroups.com>Subject:
Read moreAttenuation of signal due to radio connector adapters
From: ‘Alex P’ via Society of Amateur Radio AstronomersSent: 04 January 2025 10:28To: Society of Amateur Radio AstronomersSubject: [SARA] Re:
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