Sudden Ionospheric Disturbances (SIDs) are changes in power level of very low frequency signals detected with simple equipment in our houses that take up very little space and represent the…
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 THINGS survey research paper in PDF format by clicking here:…
Co-axial cable Impedance. Matching impedance is not too critical when you are not transmitting POWER. where out of phase reflections can cause much higher voltages to be created often referred…
Observing Advice for the NRAO Skynet 20-meter telescope Following is from 22/3/2025 on following link: https://www.gb.nrao.edu/20m/obsadvice.html Links UNC Skynet 20m skynet interface Log of 20m results. latest observation NRAO Skynet…
SARA members have access to this telescope, providing an incredible opportunity to use a professional telescope for personal observations, which will be used for educational purposes. A ZIP file of…
Another project underway is water maser radio observing. This requires a 1m dish (arrived today, below) and an LNB for 22 GHz (ordered from USA) and a HEQ5 Pro mount…
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I own the VA40B Multimeter – part of my testing regime for aerials involves measuring resistance. To ensure accurate resistance measurements with your VA40B multimeter, it’s essential to account for…
In cosmology, a positive Doppler shift in radio waves means an object is moving away from us. This happens because the waves get redshifted — their wavelength stretches, and the…
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