How long does a photon take to cross 10cm space?
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Sure! Here’s the calculation in plain ASCII: For reference:
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What amateur deep space network groups are picking up signals from deep space probes?
There isn’t a single formal “amateur deep space network,” but there are several organised groups and communities of radio amateurs and citizen-science teams that regularly detect carriers from interplanetary probes.…
How to install Linux on Mac?
Installing Linux on a Mac depends mainly on which type of Mac you have: I’ll outline both methods. 1. Installing Linux on an Intel Mac (Most Flexible) Step 1 —…
What torque is required on drive to move 150cm dish?
The torque required depends mostly on three things: If the dish is perfectly balanced around the elevation axis, the motor only needs to overcome friction and inertia, which is quite…
Online interdigital RF cavity filter designer
Dale Hitherington’s online calculator (WA4DSY): https://www.wa4dsy.net/cgi-bin/idbpf
WTMicrowave 1415-1425 MHz Cavity Bandpass Filter WT-A11988-Q06 ordered 7/3/2026
Test data: https://www.astronomy.me.uk/wp-content/uploads/2026/03/260306_WT-A11988-Q06_1415-1425MHz_Test-Data.docx Test Curves: Batch of three filters ordered – test curves for all three below: Filters 1-3:
Does WordPress run under PHP?
Yes 👍 — WordPress runs primarily on PHP. How it works Simplified flow Typical hosting stack A common setup is the LAMP stack: There are also variants like LEMP (Linux…
LMX2820 22.6-GHz Wideband PLLatinum™ RF Synthesizer Product Info Sheet
https://www.astronomy.me.uk/wp-content/uploads/2026/03/LMX2820-22.6-GHz-Wideband-PLLatinum™-RF-Synthesizer-Product-Info-Sheet.pdf
Enabling fileinfo extension on PHP running under Windows
On Windows, the fileinfo extension is usually already included with PHP—you normally just need to enable it in php.ini. Here is the straightforward way to do it. 1. Find your…