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Paul Burridge wrote: Spread Spectrum = Legalized Jamming. Is it even legal for hams, though?? Yes, with restrictions. See Part 97 section 311 for the detailed rules. Briefly: - SS is allowed, but must not be used for the purpose of obscuring the meaning of the transmissions. - SS transmissions must not cause harmful interference to non-SS stations, and must accept all interference from non-SS stations. - SS transmissions are limited to 100 watts, and if over 1 watt must implement automatic transmitter power control which limits power to the minimum needed to maintain a specified SNR. - SS stations can be ordered to shut down or restrict their transmissions, and/or required to maintain a complete record of information transmitted via SS. If I recall correctly, the FCC rules used to restrict amateur SS tranmsissions to using certain specified coding techniques, but this restriction appears to have been relaxed. I infer that the broader rule about using publicly-documented modulation techniques is the one which now applies. -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
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