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Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by law enforcement and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [1]
The 10-meter band is a portion of the shortwave radio spectrum internationally allocated to amateur radio and amateur satellite use on a primary basis. The band consists of frequencies stretching from 28.000 to 29.700 MHz.
Two PRN ranging codes are transmitted on L5 in quadrature: the in-phase code (called I5-code) and the quadrature-phase code (called Q5-code). Both codes are 10,230 chips long, transmitted at 10.23 Mchip/s (1 ms repetition period), and are generated identically (differing only in initial states).
10 −12: 1 picohertz (pHz) 1.23 pHz Precession of the Earth's axis (about every 25,700 years) 10 −11: 10 pHz ~31.71 pHz: Once per millennium 10 −10: 100 pHz ~317.1 pHz: Once per century 10 −9: 1 nanohertz (nHz) ~1 nHz: Once per generation (about every 30 years) ~2.9 nHz: Average solar cycle (about every 11 years) ~3.171 nHz: Once per ...
Specific frequency allocations vary from country to country and between ITU regions as specified in the current ITU HF frequency allocations for amateur radio. [1] The list of frequency ranges is called a band allocation, which may be set by international agreements, and national regulations.
List of HTTP status codes - Wikipediawikipedia.org
frequency (MHz) Frequency range (MHz) 10 MHz 20 MHz Band name United States United Kingdom Europe Japan 172 5860 5855–5865 10 — DSRC: Unknown Yes Unknown 174 5870 5865–5875 10 176 5880 5875–5885 10 178 5890 5885–5895 10 180 5900 5895–5905 10 182 5910 5905–5915 10 C-V2X: No No No Registration required 183 (proposed) 5915 5905 ...
This is a list of the fundamental frequencies in hertz (cycles per second) of the keys of a modern 88-key standard or 108-key extended piano in twelve-tone equal temperament, with the 49th key, the fifth A (called A 4), tuned to 440 Hz (referred to as A440). Every octave is made of twelve steps called semitones.
5, 10, 15, 20 8 FDD 900 Extended GSM: 880 – 915 925 – 960 45 1.4, 3, 5, 10 11 FDD 1500 Lower PDC: 74 1427.9 – 1447.9 1475.9 – 1495.9 48 5, 10 Japan 12 FDD 700 Lower SMH 85 699 – 716 729 – 746 30 1.4, 3, 5, 10 13 FDD 700 Upper SMH 777 – 787 746 – 756 −31 5, 10 14 FDD 700 Upper SMH 788 – 798 758 – 768 −30 5, 10 17 FDD 700 ...
Low frequency: LF: 5: 30–300 kHz 10–1 km: Navigation, time signals, AM longwave broadcasting (Europe and parts of Asia), RFID, amateur radio. Medium frequency: MF: 6: 300–3,000 kHz 1,000–100 m
T − 1 {\displaystyle {\mathsf {T}}^ {-1}} Frequency (symbol f ), most often measured in hertz (symbol: Hz), is the number of occurrences of a repeating event per unit of time. [1] It is also occasionally referred to as temporal frequency for clarity and to distinguish it from spatial frequency. Ordinary frequency is related to angular ...