solar

135 links - and 3 categories

Improve your Antennas for Low Solar Activity - How to improve your transmitting antennas for very low solar activity periods, vertically polarized 160 meter antennas, horizontally polarized 80 to 10 meter antennas, single or stacked yagis, multi-tower stations
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URE WebCluster - Online DX Cluster provided by URE Union Radioafocionados Espanoles Provide current band status, propagation map, solar indices and dx spots with several filtering functions
[ Hits: 59 | Votes: 0 | Rating: 0 ]

CubesatShop - This is a website that sells CubeSat components and kits, including solar panels, batteries, and radios.
[ Hits: 13 | Votes: 1 | Rating: 1 ]

Making Sense of Solar Indices - Undesrtanding three band conditions indicators to undestand current and future propagation conditions, solar flux, Ap and Kp indices
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Exploring the Spectrum From HF to UHF Frequencies - During radio's early days, high frequencies were under 30 MHz due to technical limitations. As understanding grew, components improved, allowing for higher frequencies like VHF and UHF up to 3 GHz. The HF band's long wavelengths provide unique propagation challenges influenced by solar activity. VHF and UHF bands face diffraction and reflection issues but offer diverse applications, from amateur radio to 5G and GPS technologies.
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Current Space Weather Parameters - Solar Wind Velocity and Auroral Storm Potential the website provides also current magnetic indices like last Kp values and predicted Kp values.
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NOAA Predicted Sunspot Number - Predicted Solar Cycle: Sunspot Number And Radio Flux Values with Expected Ranges, sources are Penticton, B.C., Canada, S.I.D.C. Brussels
[ Hits: 41 | Votes: 0 | Rating: 0 ]

What to Expect at Solar Minimum - Article on operating aids and band usage during solar minimun periods. Author tries to explain what can we expect on the HF bands during a solar minimum period and which approach to be used to understand band openings.
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Where to buy PowerFilm Solar Panels - Where to buy solar panels for portable operations. PowerFilm panels and Genasun charge controllers in North America or in Europe
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Ham Radio and Solar Power Systems - Can Home Solar Power and Ham Radio Coexist? It is possible, with minimal interference from the solar power system, provided you make some modifications.
[ Hits: 345 | Votes: 1 | Rating: 9 ]
Conventional or Inverter Generators - Generators are broken down into three basic types: conventional gas, inverter, and diesel. What is the difference between these? Which is best? Do you even need a generator if you already have solar or other off grid energy available? Let’s sort it out.
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Reliable Emergency Power: Solar Solutions - In a quest for reliable emergency power, the article discusses the necessity of accessible power solutions amidst blackouts and energy crises. It introduces the American-made Merlin Panther 100-watt solar briefcase and budget-friendly LiFePO4 batteries. The setup addresses the need for modular, renewable power solutions, balancing cost-effectiveness with functionality for various scenarios. The narrative emphasizes the importance of reliable power sources in unpredictable situations.
[ Hits: 48 | Votes: 0 | Rating: 0 ]

Stop RFI from Solar PV Systems - Stop EMI RFI Interference in Off Grid Solar PV Systems, in this article the author provides hints on tracking down the EMI or RFI source, shielding and grounding in order to eliminate interferences on the whole HF and VHF ham radio bands
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Solar Panel and Ham Radio - If you are having problems with RFI from Solar Panels this document from QST provides useful advice. According to this article it is possible to prevent and mitigate RF interferences, with your amateur radio equipment, by suppressing the RF either in the shack and to the solar power infrastructure.
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RF-Quiet Solar PV for Ham Radio - This article discusses the potential for solar power systems to coexist harmoniously with amateur radio, challenging the notion that they are inherently incompatible. Drawing from personal experience, the author emphasizes the importance of selecting RF-quiet components, focusing on series-string Sunny Boy grid-tie inverters. The article also highlights considerations for system design and limitations based on roof orientation, shading, and array size. Overall, it presents a valuable perspective on creating a radio-friendly solar PV setup.
[ Hits: 78 | Votes: 1 | Rating: 1 ]