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The PI code allows the radio to identify the station across different broadcast relay stations. This in turn allows listeners to stay tuned to a network whilst travelling across the service area of multiple transmitters. The PI code is a 4-digit hexadecimal number. For example BBC Radio 1 has PI code C201. (The number itself is usually not ...
Ron Rivest used pi to generate the S-box of the MD2 hash. [4]Ron Rivest used the trigonometric sine function to generate constants for the widely used MD5 hash. [5]The U.S. National Security Agency used the square roots of the first eight prime integers to produce the hash constants in their "Secure Hash Algorithm" functions, SHA-1 and SHA-2. [6]
One type of metadata transmitted by RDS subcarrier is the PI code, which is used by the receiver to uniquely identify the audio program being broadcast by the FM station. In the U.S., the PI code has historically been derived from a radio station's call sign, which can become complicated when used in conjunction with FM translators.
Automatic number identification (ANI) [1] [2] is a feature of a telecommunications network for automatically determining the origination telephone number on toll calls for billing purposes. Automatic number identification was originally created by the American Telephone and Telegraph Company (AT&T) for long distance service in the Bell System ...
The code is used to transmit standard messages, sometimes with customized text, very quickly by experienced ARRL National Traffic System (NTS) message traffic handlers. In use, ARRL Numbered Radiograms are messages encoded as one or two numbers. The numbers are always written down as words, and are always preceded by the procedure word "ARL".
The site enables you to find more than just reverse lookup names; you can search for addresses, phone numbers and email addresses. BestPeopleFinder gets all its data from official public, state ...
Short codes are five digits in length, and start with 5. The second digit generally indicates the maximum price, with 0 = completely free, 1 = standard text rate only, 3 = €0.60, and 7 having no maximum. Codes beginning 59 are ostensibly intended for adult services, but few if any of these codes are used. [13]
This means that the integer part of the natural logarithm of a number in base e counts the number of digits before the separating point in that number, minus one. The base e is the most economical choice of radix β > 1, [ 4 ] where the radix economy is measured as the product of the radix and the length of the string of symbols needed to ...