Wood & Metal working tools - Morse or Machine Taper (including Jacobs)

Morse or Machine Taper (including Jacobs):  https://en.wikipedia.org/wiki/Machine_taper
"Tools with a tapered shank are inserted into a matching tapered socket and pushed or twisted into place. They are then retained by friction ..."
"The Morse taper ... has evolved to encompass smaller and larger sizes and has been adopted as a standard by numerous organizations ... It is one of the most widely used types, and is particularly common on the shank of taper-shank twist drills and machine reamers, in the spindles of industrial drill presses, and in the tailstocks of lathes."

How To Identify & Determine The Size Of Your Morse Taper:
    https://solutions.travers.com/metalworking-machining/how-to-identify-determine-the-size-of-your-morse-taper
    Includes a downloadable Morse Taper Dimension Chart.

Morse Taper Dimensions:  https://uwoodcraft.com/morse-taper-dimensions/
Also see: https://drill-hq.com/2012/04/morse-taper-dimensions-chart/   &
https://www.engineersedge.com/manufacturing/morse_taper_shanks_dimensions_table_13465.htm

What are the Dimensions and Angles of Morse Tapers and Jacobs Tapers?
    https://www.zoro.com/resourcehub/what-are-the-dimensions-and-angles-of-morse-tapers-and-jacobs-tapers/
"Morse and Jacobs tapers are examples of self-holding tapers. ... Machinists are taught to take great care when handling Morse and Jacobs tapers as they are sensitive to nicks, dents, chips and dirt. When aligning the male conical taper with the female socket, if there are any imperfections or dirt, the pieces won't locate accurately nor hold reliably ..."
"The Jacobs taper, regularly abbreviated as JT, is most often used to secure drill press chucks to an arbor. The taper angles aren't consistent, varying from 1.41° per side for #0 (and the obscure #2-1/2) to 2.33° per side for #2 (and #2 short). There are also several sizes between #2 and #3: #2 short, #6 and #33."

Software Defined Radio (SDR), Raspberry Pi projects and more

10 Raspberry Pi projects based on Software-Defined Radio (SDR):
https://ke4bfi.com/2023/06/23/10-raspberry-pi-projects-based-on-software-defined-radio-sdr/
"1) Build an ADS-B receiver using Raspberry Pi and Software-Defined Radio (SDR) to track aircraft in your vicinity.
2) NOAA Weather Satellite Receiver ... can capture and process high-resolution weather images.
3) Radio Astronomy: Detect and analyze radio signals from celestial objects, such as the Sun, Jupiter, or even pulsars. F
4) Build a trunked radio scanner using Raspberry Pi and an SDR dongle.
5) Create an Automatic Identification System (AIS) receiver with Raspberry Pi and SDR to track ships and vessels in your vicinity.
6) Radio Direction Finding (RDF) - locate the source of radio signals. This project allows you to determine the direction of signals and can be used for various applications, including locating interference or tracking down rogue transmitters.
7) Pager Decoding: decode and monitor pager signals.
8) Turn your Raspberry Pi and SDR into a microwave cooker camera to visualize microwave radiation.
9) FM Radio Receiver:  tune in to your favorite FM radio stations and explore the world of software-defined radio.
10) Create a GSM base station using Raspberry Pi and SDR to experiment with GSM networks and protocols. This project enables you to set up a miniature GSM network and explore cellular communications.
Please note that some projects may require additional hardware, such as specific SDR dongles or antennas ..."

10 Best Software Defined Radio (SDR) Projects:

 https://www.onesdr.com/10-best-software-defined-radio-sdr-projects/

" 1)  Receiving and Decoding Radio Broadcasts, including FM, AM, shortwave, and digital radio
  2)  Tracking Aircraft with ADS-B
  3)  Monitoring Weather Satellites, receive images and data from NOAA weather satellites.
  4)  Listening to Amateur Radio Communications (ham), including SSB, CW, and digital modes
  5)  Exploring Digital Radio Mondiale (DRM)
  6)  Analyzing the Radio Spectrum
  7)  Experimenting with Digital Modes
  8)  Setting Up a Local FM Transmitter - Create your own low-power FM transmitter (understand local transmission regulations!)
  9)  Building an SDR-Based Radar System - build a simple radar system for detecting objects
10)  Monitoring Satellite Communications

Fifty Things you can do with a Software Defined Radio: 

https://blinry.org/50-things-with-sdr/

"A Software Defined Radio is essentially a radio that relies on a computer to do most of its data processing. It doesn't rely on analog hardware too much – instead, most of what is does is "defined in software", hence the name.
Usually, SDRs can detect electromagnetic waves in a much wider range than a common FM radio, which makes it especially exciting! "
"(By the way, there's another great option if you don't want to buy anything – lots of people make their SDR accessible through the Internet! You can find a map https://rx-tx.info/map-sdr-points)"


Software Defined Radio Primer Part 1: Introduction to SDRs and SDR applications:
https://swling.com/blog/2018/09/software-defined-radio-primer-part-1-introduction-to-sdrs-and-sdr-applications/

SDR Primer Part 2: Exploring the world of SDRs for $200 or less:

https://swling.com/blog/tag/sdr-for-beginners/

Proxmox Virtual Environment

Recommended often on FB Home Server Setups group

https://www.proxmox.com/en/products/proxmox-virtual-environment/overview

"Proxmox Virtual Environment is a complete, open-source server management platform for enterprise virtualization. It tightly integrates the KVM hypervisor and Linux Containers (LXC), software-defined storage and networking functionality, on a single platform. With the integrated web-based user interface you can manage VMs and containers, high availability for clusters, or the integrated disaster recovery tools with ease."

Ubuntu available in Microsoft’s new WSL distribution format

https://ubuntu.com/blog/ubuntu-wsl-new-format-available

" Ubuntu on Windows Subsystem for Linux (WSL) is now available in Microsoft's new tar-based distribution architecture.

...

The new tar-based WSL distro format allows developers and system administrators to distribute, install, and manage Ubuntu WSL instances from tar files without relying on the Microsoft Store."

Some History of the ASP Pistol

Custom built in the '70s, this was one the first compact pistols in a "serious" caliber.

https://www.handgunsmag.com/editorial/asp-9mm-subcompact-pistol-history/514391

"I was determined to design a better covert use device," he said. "No jutting front sights. No sharp edges on the pistol or its rear sights. Just a smooth transition from pocket or holster to hand."

.357 Magnum history and comparison

Compare the performance of .357 Magnum cartridges with slow-burning powder fired from barrels of various lengths.
https://www.shootingtimes.com/editorial/Popular-357-Magnum-Marches-On-Not-Forgotten/516126

"When it comes to reaching maximum velocities with all available bullet weights, I have found W296 impossible to beat."

"Hornady XTP bullets weighing 110, 125, 140, 158, and 180 grains fit the bill perfectly. ... The five bullets have the same cannelure-to-nose measurement, and they differ only in full-diameter shank length. When loaded to the same overall cartridge length, free travel prior to rifling engagement is the same for those bullets."

"The revolver used for .357 Magnum velocity checks was a Dan Wesson Arms Model 715-VH ... with interchangeable barrels measuring 2.5, 4.0, 6.0, and 8.0 inches."

"A Ruger-made Marlin 1894 lever-action rifle with a barrel measuring 18.125 inches from boltface to muzzle was also used for checking velocities. ... Also serving as a paper-puncher ... was an old, reliable 6.0-inch-barreled Smith & Wesson Model 686 revolver wearing a ... scope in 2-6X magnification."

"Increasing barrel length from 4.0 to 6.0 inches resulted in an average gain of 120 fps (60 fps per inch).
Going from a barrel length of 6.0 inches to 8.0 inches increased average velocity by 119 fps, for virtually the same gain per inch.

Increasing barrel length from 8.0 inches to 18.125 inches resulted in an average gain of 469 fps, or roughly 47 fps per inch of barrel length increase."

"As bullet weight increases, velocity gain in longer barrels decreases ... When going from a 2.5-inch barrel to an 8.0-inch barrel, respective velocity increases for the 110-grain, 125-grain, 140-grain, 158-grain, and 180-grain bullets were 506 fps, 396 fps, 362 fps, 251 fps, and 210 fps. When switching from a 2.5-inch barrel to a barrel measuring 18.125 inches, the 110-grain bullet gained more than twice as much velocity as the 180-grain bullet (1,114 fps versus 519 fps)."

"I also proved to my own satisfaction that from a practical point of view, there is not a lot of difference in accuracy among the five Hornady bullets fired from my guns. Among several factors that could be at work here, all bullets being quite close to the same diameter along with all traveling the same distance prior to engaging the rifling had to be influential."