Spread Spectrum does not unto itself comprise a means of encrypting information although encryption often accompanies it.
On 7/13/10 3:50 PM, "Lester Veenstra" <[email protected]> wrote: > > > > > > The rules also make it clear that SS (or any other coding system) cannot be > used to hid the meaning. They used to demand disclosure of the encoding > system for compliance, but now, seem happy if the decode software (but not the > source code) is freely available to those who want to listen. > > > > > Lester B Veenstra MØYCM K1YCM > [email protected] <mailto:[email protected]> > [email protected] <mailto:[email protected]> > [email protected] <mailto:[email protected]> > > > US Postal Address: > PSC 45 Box 781 > APO AE 09468 USA > > UK Postal Address: > Dawn Cottage > Norwood, Harrogate > HG3 1SD, UK > > Telephones: > Office: +44-(0)1423-846-385 > Home: +44-(0)1943-880-963 > Guam Cell: +1-671-788-5654 > UK Cell: +44-(0)7716-298-224 > US Cell: +1-240-425-7335 > Jamaica: +1-876-352-7504 > > This e-mail and any documents attached hereto contain confidential or > privileged information. The information is intended to be for use only by > the individual or entity to whom they are addressed. If you are not the > intended recipient or the person responsible for delivering the e-mail to > the intended recipient, be aware that any disclosure, copying, distribution > or use of the contents of this e-mail or any documents attached hereto is > prohibited. > > > From: [email protected] [mailto:[email protected]] On > Behalf Of [email protected] > Sent: Tuesday, July 13, 2010 8:45 PM > To: [email protected] > Subject: Re: [digitalradio] SS and the FCC definitions > > > > > sorry, the fine print is giving me fits. It's obviously 97.3 (c)(9). > > I'm thinking another reason for the restrictions - SS is also a very good > means of encryption. > The previous rules on SS required use of a particular type of SS and the key > number was specified in the rule.. > Probably in a pre 1999 ARRL rule book , if anyone really needed to look. > There might exist a method of finding old versions of the CFR online, but I > have not looked. > > ----- Original Message ----- > From: "Lester Veenstra" <[email protected]> > To: [email protected] > Sent: Tuesday, July 13, 2010 12:26:57 PM GMT -06:00 US/Canada Central > Subject: [digitalradio] SS and the FCC definitions > > > > > > § 97.3 Definitions. > (b) The definitions of technical symbols > used in this part are: > (9) UHF (ultra-high frequency). The > frequency range 3003000 MHz. > > ---------------------------------------------- > § 97.3 Definitions. > (c) The following terms are used in > this part to indicate emission types. > Refer to § 2.201 of the FCC Rules, Emission, > modulation and transmission characteristics, > for information on emission > type designators. > (8) SS. Spread spectrum emissions > using bandwidth-expansion modulation > emissions having designators with A, > C, D, F, G, H, J or R as the first symbol; > X as the second symbol; X as the > third symbol. > > > § 2.201 Emission, modulation, and > transmission characteristics. > The following system of designating > emission, modulation, and transmission > characteristics shall be employed. > (a) Emissions are designated according > to their classification and their > necessary bandwidth. > (b) A minimum of three symbols are > used to describe the basic characteristics > of radio waves. Emissions are classified > and symbolized according to the > following characteristics: > (1) First symboltype of modulation > of the main character; > (2) Second symbolnature of signal( > s) modulating the main carrier; > (3) Third symboltype of information > to be transmitted. > > > (c) First Symboltypes of modulation > of the main carrier: > (2) Emission in which the main > carrier is amplitude-modulated > (including cases where sub-carriers > are angle-modulated):. > Double-sideband ....................... A > Single-sideband, full carrier ..... H > Single-sideband, reduced or > variable level carrier ................ R > Single-sideband, suppressed > carrier ...................................... J > Vestigial sideband .................... C > (3) Emission in which the main > carrier is angle-modulated:. > Frequency modulation ............. F > Phase modulation ..................... G > > NOTE: Whenever frequency modulation F¹¹ > is indicated, Phase modulation G¹¹ is also > acceptable. > (4) Emission in which the main > carrier is amplitude and anglemodulated > either simultaneously > or in a pre-established sequence .. D > > > > > Lester B Veenstra MØYCM K1YCM > [email protected] > [email protected] > [email protected] > > > US Postal Address: > PSC 45 Box 781 > APO AE 09468 USA > > UK Postal Address: > Dawn Cottage > Norwood, Harrogate > HG3 1SD, UK > > Telephones: > Office: +44-(0)1423-846-385 > Home: +44-(0)1943-880-963 > Guam Cell: +1-671-788-5654 > UK Cell: +44-(0)7716-298-224 > US Cell: +1-240-425-7335 > Jamaica: +1-876-352-7504 > > This e-mail and any documents attached hereto contain confidential or > privileged information. The information is intended to be for use only by > the individual or entity to whom they are addressed. If you are not the > intended recipient or the person responsible for delivering the e-mail to > the intended recipient, be aware that any disclosure, copying, distribution > or use of the contents of this e-mail or any documents attached hereto is > prohibited. > > > From: [email protected] [mailto:[email protected]] On > Behalf Of [email protected] > Sent: Tuesday, July 13, 2010 1:52 PM > To: [email protected] > Subject: Re: [digitalradio] Re: Moving ROS forward in the USA? > > > > > sorry, my typo. It's in 97.3. (b)(9) > > > > > > > >
