Mapping 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,
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astronomy.network The Website of Lichfield Radio Observatory (LRO)
Andrew Thornett, Lichfield, England, M6THO, andrew (at) thornett (dot) net
Alex 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:
Read moreNotes on attenuation from responses to questions asked on SARA Mailing List 5 January 2025
My Question: Hi, Basic question- say I save 2dB here by changing coax and 2dB there by doing something else.
Read moreEffect of changing 5m of RG58 coaxial cable into LMR400 coaxial cable
The following picture shows the theoretical improvement from making this change.
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