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The nominal "80 meter" band begins at 3.5 MHz (85.7 m wavelength) and goes up to 4.0 MHz (74.9 m wavelength).The upper part of the band, mostly used for voice, is often referred to as 75 meters, since in Region 2, the wavelengths in that section are between 80–75 meters (adjacent to or overlapping a shortwave broadcast band called by the same name: "75 m").
A standard phone line has enough room to support voice, high-speed DSL and a landline phone. [5] Two custom chips designed using the HPNA specifications were developed by Broadcom: the 4100 chip can send and receive signals over 1,000 ft (305 m) on a typical phone line. The larger 4210 controller chip strips away noise and passes data on.
Farallon PhoneNET adapter. PhoneNET is a discontinued implementation of the AppleTalk networking physical layer created by the Berkeley Macintosh Users Group (BMUG) and commercialized by Farallon Computing (now Netopia).
A secure telephone is a telephone that provides voice security in the form of end-to-end encryption for the telephone call, and in some cases also the mutual authentication of the call parties, protecting them against a man-in-the-middle attack. Concerns about massive growth of telephone tapping incidents led to growing demand for secure ...
The bottom line: That nagging feeling that your phone is listening to you hints at a much larger phenomenon: We are being tracked by a huge data-collection network, and companies are gathering ...
Best practices • Don't enable the "use less secure apps" feature. • Don't reply to any SMS request asking for a verification code. • Don't respond to unsolicited emails or requests to send money.
AT&T Merlin five-button telephone (voice terminal) manufactured in early 1980. AT&T Merlin is a corporate telephone system by American Telephone and Telegraph (AT&T) that was introduced in late 1983, when it was branded American Bell Merlin.
One of the most common job scams involves working from home. Your new employer will send you a cheque. You'll use part of that money to set up your home office. The rest of the money will be sent ...
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