New Skynet website – network of large radio dishes available to amateurs (SARA members have access to 20m Skynet dish at Green Bank Observatory in USA)
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https://skynetgo.org/
What are beta emission rates at 37000 feet vs ground level?
At an altitude of about 37,000 feet (11.3 km), the environment contains much more secondary cosmic radiation than at ground level, but it’s important to distinguish between beta particles and…
What types of radiation cause radiation exposure to airplane staff?
Airline crew are exposed primarily to cosmic radiation rather than radiation from the aircraft itself. At cruising altitude, the atmosphere provides much less shielding than it does at ground level.…
Chip sets used in the NESDR SMARTee vs RTL-SDR V4
Here are the actual chipsets inside both devices, stripped down to the essentials: 📡 RTL-SDR Blog V4 Uses: 👉 So the V4 is basically: R828D + RTL2832U This combination is…
Radio observing M33 with small dishes
This involves looking to detect the 21-cm (1.42 GHz) neutral atomic hydrogen (HI) line. Mapping extragalactic hydrogen with a small backyard dish is incredibly challenging, but is possoble. It was…
References relevant to radio observing of M33 with small dishes
From Jason Burnfield. These references support Jason’s presentation on the Hydrogen Line meeting on 6/7/2026 found on the British Astronomical Association YouTube channel.
What is the Virgo radio astronomy software, who produces it, what is it used for, and where would I find it and any other material about its use?
“Virgo” in radio astronomy most commonly refers to a software package for running and analysing small radio telescope data using SDRs (software-defined radios)—not a single instrument or observatory. It is…
Chip sets used in the NESDR SMARTee vs RTL-SDR V4
Here are the actual chipsets inside both devices, stripped down to the essentials: 📡 RTL-SDR Blog V4 Uses: 👉 So the V4 is basically: R828D + RTL2832U This combination is…
What coaxial cable gives 6dB over 25m?
It depends strongly on frequency (coax loss is frequency-dependent), but assuming you mean something in the VHF–UHF / radio astronomy range (e.g. ~1.4 GHz): To get ~6 dB over 25…
What is an FTP cable, as used on the AAA-1C Amplifier for VLF RF?
An FTP cable usually stands for Foiled Twisted Pair Ethernet cable. It is similar to ordinary Ethernet cable, but it has an additional foil shield wrapped around all four twisted…