Police scanners fans can hear live police, fire, and ambulance calls. However, it isn’t as easy as it used to be because nearly all radios now are trunked. That means conversations might jump ...

In the old days, scanners would listen to a bunch of channels in a round-robin fashion. If a signal breaks the squelch, the scanner stops ... often used to listen to police and fire radios.

Frequency Range: 20MHz - 1300MHz; Compatible with: Public Radio Scanner, Ham Radio, Two Way Radio, Walkie Talkie, Mobile Radio; VSWR: < 2.0; Impedance: 50 ohm ...

A scanner that provides a flat, glass surface to hold a sheet of paper, book or other object for scanning. The scan head is moved under the glass. Flatbed scanners often come with sheet feeders ...

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keys and phones Police could scan crowds for weapons rather than rely on physical searches Portable knife scanners that can detect blades from around 10ft away will be trialled by police later ...

Epson's $250 Perfection V600 scanner is designed for the photographer who finds the Epson V700 too rich for their blood but still wants a serious photo scanner. The V600 uses an LED light source ...

A type of scanner used to capture the highest resolution from an image. Photographs and transparencies are taped, clamped or fitted into a clear cylinder (drum) that is spun at speeds exceeding ...