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This series appeared in the April 1973, June 1973, August, 1973, October, 1973, April 1974,December 1974, and the August 1976 issues of QST magazine.Copyright 1973,1974,1976, 1999 American Radio Relay League.…
Following is relevant to when you have a video or audio file, and you want to turn its speech into an editable text document (like a transcript): 🔧 Options for…
Here are typical signal attenuation figures (loss) for common coaxial cables at around 1.42 GHz (1420 MHz) — expressed as dB per unit length. Coax loss increases with frequency, so,…
Yeah, you’re not imagining it — AliExpress search can feel wildly off-topic. That’s not you, that’s how it’s built. Here’s what’s going on behind the curtain 👀 1. It’s not…
Some parts and alternatives that might help mount a ~30 cm or ~40 cm aluminium ring for waveguides — including raw material you can machine or tube rings / mounting…
How to Free Up Space in Linux Ubuntu When Root (/) Partition Is Full &, if necessary, extend your root partition (/) Freeing up space in the existing sized root…
Great question — this is one of those radio-astronomy tricks that feels almost too simple until you see why it works. The key idea A 50 Ω resistor at a…
This antenna is used on LRO-H3 at LRO. From Alex Pettit: The spacers and plates are aluminum. The threaded rod they sit on is steel. Measure the DC resistance from…
On Monday, 26 January 2026 at 08:32:18 GMT, andrew.thornett via Society of Amateur Radio Astronomers <sara-list@googlegroups.com> wrote: I notice that the SETI Horn of Plenty is a smaller version of…
These two get mixed up all the time in GNU Radio because they sound similar but solve slightly different problems. I’ll explain them intuitively first, then a bit more technically,…
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