[Mr. Carlson] bought a Globe Scout Model 40A ham radio transmitter at a hamfest. The 40A was a grand old transmitter full of tubes, high voltage, and a giant transformer. It is really interesting to ...

The boot Dive Award has now entered its critical public voting phase. This phase allows the global diving community to weigh ...

Most often ultrasonic transducers are used for distance measurements, and in the DIY world, usually as a way for robots to detect obstacles. But for a weekend project, [Vinod.S] took the ultrasonic ...

Carrier synchronization, Mark Persons writes, can be applied to alleviate co-channel interference between two AM radio ...

View post: Hyundai Unveils Exciting December Lease Deal for the 2025 Ioniq 5 N Autoblog may receive a share from purchases made via links on this page. Pricing and availability are subject to change.

There was a time when we only had one type of earphone, and it was wired. Now, thanks to the expansion of Bluetooth technology, the days of untangling cords are over. It’s mostly been a pleasant ...

SOUTHWICK, Mass.—Hitachi Kokusai Electric Comark has announced that the WGBH has upgraded it VHF Band 1 Parallax liquid cooled DTV transmitter for up to 47.8kW of power. Comark supplied the Parallax ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The 47-year-old ...

The familiar real estate adage “location, location, location” rings true these days for huge tracts on the outskirts of major cities — sites that for decades housed AM radio towers but that today ...

FILE: Despite weather conditions, some people took advantage of the big waves in Galveston. The National Weather Service will install a temporary weather radio transmitter in Galveston at the end of ...