“2024 year 11 month”
Ham Radio Aids New York Marathon
By any metric, the New York Marathon is an immense production. The 50,000+ runners who make this the world's largest marathon. Their route will take them through all five of the city's boroughs, from the starting line on Staten Island up through Brooklyn and Queens, across the Queensboro Bri...
More Radio Enthusiasts Needed in the Internet Age
Ham radio enthusiasts from throughout the region were at the Polk County Fairgrounds on Saturday, drawn by the lure of the semi-annual swap meet. For some, ham radio is a hobby. Hams tends to use two kinds of gear: HF and VHF/UHF. HF gear is made to talk over long dist...
Effects of Electromagnetic Shielding in Electron Microscope Lab Environment (Part 1) Low-Frequency Electromagnetic Shielding in Practice
The environment of an electron microscopy lab does not directly impact the electron microscope itself but rather affects the imaging quality and overall performance of the microscope. During the operation of an electron microscope, the fine electron beam needs to travel in a high vacuum environme...
Do police have portable fingerprint scanners?
Do police have portable fingerprint scanners? Yes, portable fingerprint scanners are used by law enforcement agencies in many countries. These devices allow the police to quickly capture and analyze fingerprints in the field without the need to transport the individuals to a police station o...
Classification of LED Display Screens
LED display screens are classified into different categories based on various criteria. Initially, there were several classification methods, which included:1. Installation Scene: Indoor LED display screens and outdoor LED display screens.2. LED Encapsulation Type: DIP LED display screens, SMD LE...