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Amateur spread spectrum allowed

In telecommunication and radio communication , spread-spectrum techniques are methods by which a signal e. These techniques are used for a variety of reasons, including the establishment of secure communications, increasing resistance to natural interference , noise and jamming , to prevent detection, and to limit power flux density e. This is a technique in which a telecommunication signal is transmitted on a bandwidth considerably larger than the frequency content of the original information. Frequency hopping is a basic modulation technique used in spread spectrum signal transmission.
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Spread spectrum

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FCC Adopts Spread Spectrum Rules Changes

Spread Spectrum : Part 97 Rules and Regulations. The following is no longer current. The most significant changes are the elimination of the APC requirement and the reduction of power limit to 10 watts. The reader is advised to consult the most current version of Part 97 rules prior to operation. Alternatively, by the changing of one or more parameters of the emission so that a conventional CW or phone emission receiver can be used to determine the station call sign.
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(E8D03) Spread Spectrum

The second item is a rule change that allows amateurs to use higher power from spread-spectrum communications. Not too smart, unless he was trying to hide other stuff that would have gotten him into even more trouble. This should make it easier for hams to experiment with spread-spectrum techniques.
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N4ICK became involved later, beginning in These restrictions have been the subject of controversy within the Amateur Radio community ever since, some desiring to remove them entirely including permitting spread spectrum operation on all amateur bands, others wishing to tighten them. Spread spectrum is a technique to reduce the power density of a radio transmission by spreading its signal over a wide band of frequencies, at least 10 times the information rate and usually much higher. Under some conditions, reduction of power density permits greater spectrum sharing opportunities than using the traditional access method frequency- division multiple access FDMA or even time-division multiple access TDMA. As the receiving system must despread the spread spectrum signal just the opposite from how it was originally spread and in exact synchronization, there is the added advantage of rejection of interference or jamming and immunity from frequency-selective fading.
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