The idea discone antenna looks exactly like its namesake; a metal disk attached to a metal cone. Of course with the frequencies the RTL software-defined radio deals with, it’s rarely necessary ...

There was a time when it was easy to eavesdrop on police and other service radio networks. Police scanners fans can hear live police, fire, and ambulance calls. However, it isn’t as easy as it ...

It also has controls that allow you to use the radio: for example, you can select the channel, adjust the volume, switch between receiving and transmitting, and so on. The antenna, which extends the ...

The City of London Police said an illegitimate telephone mast was used to send messages that bypass mobile phone networks’ systems used to block suspicious text messages. The incident is ...

We may earn revenue from the products available on this page and participate in affiliate programs. Learn more › If you want to watch free over-the-air TV without cluttering up your living room ...

Antennas are mechanical components which either transmit or receive radio frequency signals. For transmission, an oscillating RF electrical current is fed to the antenna's terminals, where the conduit ...

Whether you need to scan family photos, piles of documents, or expense receipts, a scanner out there is built for the task. Here's how to shop for the right one, plus the top performers in our lab ...

Sure, airport body scanners are looking for threats, but here’s what else these security devices might reveal in the process Those are valid questions. You might also be wondering if body ...

Discover what an OBD2 scanner is and how to use it to diagnose and fix car problems before they escalate into major repairs.

Commissions do not affect our editors' opinions or evaluations. Receipt scanner apps are a convenient way to keep track of your expenses and save important documents digitally. These apps allow ...

A Richmond Police Department officer was shot and wounded during a traffic stop on Fairfield Avenue on Thursday night. The ...

Since 2004, I have worked on PCMag’s hardware team, covering at various times printers, scanners, projectors, storage, and monitors. I currently focus my testing efforts on 3D printers ...