Monopole vs Dipole Antennae
Here is an excellent summary of differences between monopole and dipole antennae. This comes from https://resources.pcb.cadence.com/blog/monopole-vs-dipole-antenna and was accessed 16/4/2025:
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astronomy.network The Website of Lichfield Radio Observatory (LRO)
Andrew Thornett, Lichfield, England, M6THO, andrew (at) thornett (dot) net
Testing cable ties to see if they will reduce effectiveness of parabolic reflector waveguide LRO-H2
I used cable ties to locate centre of opening of cantenna waveguide = I tested them in microwave – only
Read moreLatest version of IF Average Plug-in for SDR Sharp software
Very useful for radio astronomy – allows astronomer to integrate data collected in SDR# over a period of time. Download
Read moreUpgrading waveguide supports and direction pointing indicator on LRO-H2 (SCRT) radio telescope 12/4/2025
Data I have collected so far suggests I am having some flexure in the waveguide supports which changes as the
Read moreezRA has identified an error in the recorded right ascension for data collected with one of the LRO hydrogen line radio telescopes. How does this error in right ascension affect the azimuth measurement that should be used for ezCol .txt data files?
More detail on the issue: The ezRA screen output during processing of data collected from LRO-H2 using ezCol had identified
Read morePoem: Vastly Vexed at Very Large Array
Vastly Vexed at Very Large Array Poem (c) by Andrew Thornett April 2025 in the style of Robbie Burnes Vast dishes
Read moreM-Class Flare detected at LRO 31/3/2025 via UKRAA 23.4KHz SID monitor
Sudden Ionospheric Disturbances (SIDs) are changes in power level of very low frequency signals detected with simple equipment in our
Read moreCatalogues of H1 sources (hydrogen)
The THINGS survey is what you are looking for – research paper (web) can be seen below: https://iopscience.iop.org/article/10.1088/0004-6256/136/6/2563/meta Download above
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