lazydamon

@ThePCBDesigner This is exactly the kind of setup that makes portable satellite work look fun. Impressive that everything fits in one backpack!

Testing my new portable and fancy setup for FM and Linear Sats. Everything fits in a common backpack. 💪

@Rainmaker1973 I’ve seen Fourier explained many times, but this animation makes it click instantly. So satisfying to watch.

Fast Fourier Analysis in action. Any complex waveform, sound, or shape can be perfectly reconstructed as the sum of simple rotating circles (epicycles).

@BoscoMac S9+20dB noise floor... RIP 80 meters. That is heartbreaking to see on such a nice rig. 😢

80m is almost unusable at my QTH. I’m seeing a local noise floor of up to S9+20 dB, most likely caused by man-made interference from nearby. Weak signals are completely buried. #hamradio #amateurradio #HF #80m #EMI #RFI #QRM

@mwfoutch1 A rare sight: a top-tier mobile shack temporarily disguised as a regular truck! 😂

Almost all radio gear is out of the mobile ... Ready for the shop ... New timing belt, tailgate wire harness recall, deep clean and whatever ... 104k miles and hopefully many more to go!

Mobile Hamradio stuff ...

@Science_TechTV An acoustic phased array, 1920s edition.Pure acoustic impedance matching before computing power existed. 🧠

An aircraft listener in the 1920s is shown operating an early acoustic detection device, its scoop‑shaped reflectors channeling engine noise through large listening tubes to help pinpoint approaching aircraft long before radar existed.