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Topic: Spurious emission

	[No title]
		Spurious emission from any part of the installation, other than the antenna and its transmission line, shall not have an effect greater than would occur if this antenna system were supplied with the maximum permitted power at that spurious emission frequency.
		Spurious emission limits for combined radiocommunication and information technology equipment are those for the radiocommunication transmitters.
		The spurious emissions are to be measured in the reference bandwidths given in the Recommendation.
	www.ntia.doc.gov /osmhome/wrc99pre/00292_3_pl990504.doc (11363 words)

	Article 1 - Terms and definitions
		1.145 spurious emission: Emission on a frequency or frequencies which are outside the necessary bandwidth and the level of which may be reduced without affecting the corresponding transmission of information.
		Out-of-band emissions, defined based on their source, occur in the out-of-band domain and, to a lesser extent, in the spurious domain.
		Spurious emissions likewise may occur in the out-of-band domain as well as in the spurious domain.
	life.itu.ch /radioclub/rr/art01.htm (1890 words)

	[No title]
		Section I. Spurious Emission Limits for Transmitters Installed on or Before 1 January 2003 (valid until 1 January 2012) Radar systems are exempt from spurious emission limits under this section.
		For the purpose of setting limits, all emissions, including harmonic emissions, intermodulation products, frequency conversion products and parasitic emissions, which fall at frequencies separated from the centre frequency of the emission by ñ250%, or more, of the necessary bandwidth of the emission will generally be considered as spurious emissions.
		To measure spurious emissions in the frequency range between 30 MHz and 1 000 MHz, Recommendation ITU-R SM.329-7 recommends 4.1 indicates the use of a reference bandwidth of 100 kHz.
	www.fcc.gov /Bureaus/International/Public_Notices/1999/da990398.txt (6080 words)

	[No title]
		These Recommendations cover spurious and out-of-band (OOB) emissions, the boundary between the spurious and out-of-band domainsboth domains, intermodulation, OOB falling into adjacent bands, and a description of spectra and bandwidth of emissions for modern modulation schemes.
		Unwanted emissions are composed of OOB and spurious emissions.
		1.2 Parasitic emissions Spurious emissions, accidentally generated at frequencies which are independent both of the carrier or characteristic frequency of an emission and of frequencies of oscillations resulting from the generation of the carrier or characteristic frequency.
	www.cept.org /9A1E10CC-5692-4FAB-A7D2-53474CC51C31 (1594 words)

	Radio Specification of the Bluetooth System (Site not responding. Last check: 2007-09-17)
		In-band and out-of-band spurious emission is measured with the transceiver hopping at single frequency.
		Spurious signal attenuation is made partially in analog domain and partially in digital domain.
		Spurious emission mustn't be higher than -57 dBm in the frequency range 30 MHz - 1 GHz and higher than -47 dBm in the frequency range 1 GHz - 12.75 GHz for the Bluetooth receiver.
	www.elektrorevue.cz /clanky/04003/english.htm.iso-8859-1 (2908 words)

	Part 97 -- Subpart D
		Emissions outside the necessary bandwidth must not cause splatter or keyclick interference to operations on adjacent frequencies.
		If any spurious emission, including chassis or power line radiation, causes harmful interference to the reception of another radio station, the licensee of the interfering amateur station is required to take steps to eliminate the interference, in accordance with good engineering practice.
		(8) A RTTY or data emission having designators with A, B, C, D, E, F, G, H, J or R as the first symbol; 1, 2, 7 or 9 as the second symbol; and D or W as the third symbol is also authorized.
	www.arrl.org /FandES/field/regulations/news/part97/d-305.html (2625 words)

	Critical DAC Parameters for Multi-Carrier GSM/EDGE Transmitters - Maxim/Dallas
		To specify noise and spurious emissions from base stations, a so-called GSM/EDGE Tx mask is used to identify the DAC requirements for these parameters.
		This mask shows that the allowable levels for noise and spurious emissions are dependent on the offset frequency from the transmitted carrier frequency.
		Other spurious components falling outside the band of interest also may be important, depending on the system's spectral mask and filtering requirements.
	www.maxim-ic.com /appnotes.cfm/appnote_number/1886 (1167 words)

	K1TTT Technical Reference (Site not responding. Last check: 2007-09-17)
		If any spurious emission, including chassis or power line radiation, causes harmful interference to the reception of another radio station, the licensee of the interfering station is required to take steps to eliminate the interference, in accordance with good engineering practice.
		The width of a frequency band outside of which the mean power of the total emission is attenuated at least 26 db below the mean power of the total emission, including allowances for transmitter drift or Doppler shift.
		Emissions outside of the band, segment or necessary bandwidth are required by 97.307(d) to be 40 dB below the mean power of the fundamental emission for transmissions below 30 MHz.
	www.k1ttt.net /technote/sideband.html (1204 words)

	EMC - Hearing Aid Phase I Summary
		The purpose of this study is to provide valuable information on the spurious emission levels of wireless phones and the possible effect of those emissions on aircraft navigation equipment.
		Emissions of wireless phones positioned one meter from a receiving antenna were measured with a spectrum analyzer.
		If an emission occurs within the frequency range of a particular aircraft system, and the power of the emissions exceeds the sensitivity of the system’s antenna, the phone could potentially interfere with that system.
	www.ou.edu /engineering/emc/projects/AV1_X.html (407 words)

	Electromagnetic Compatibility Directive
		In every type of radio transmission (emission) there is a band of frequencies occupied that constitute the fundamental transmission (emission) and which is due to the modulation process used.
		The content of the emission and the bandwidth occupied is dependent on the technique and form of modulation process used, which may be analogue or digital in content.
		In consequence, "out of band" emissions if used when planning and allocating frequency band for radio services and needed in the management of the radio spectrum are not subject to the directive.
	website.lineone.net /~v_m/emc/diapp3.htm (2298 words)

	Portable Wireless LAN Device and Two-Way Radio Threat Assessment for Aircraft Navigation Radios, NASA/TP-2003-212438, ... (Site not responding. Last check: 2007-09-17)
		A radiated emission measurement process is developed and spurious radiated emissions from various devices are characterized using reverberation chambers.
		Spurious radiated emissions in aircraft radio frequency bands from several wireless network devices are compared with baseline emissions from standard computer laptops and personal digital assistants.
		In addition, spurious radiated emission data in aircraft radio frequency bands from seven pairs of two-way radios are provided.
	techreports.larc.nasa.gov /ltrs/refer/2003/tp/NASA-2003-tp212438.refer.html (263 words)

	VISIBILITY OF NEAR-IR (NIR) LASER DIODES (Site not responding. Last check: 2007-09-17)
		I would tend to believe these results concluding that the visible light from a CD laser diode is probably a spurious emission rather than the human eye's weak sensitivity to 780 nm radiation.
		The fact that the red emission was undiminished even after the laser diodes were damaged by overcurrent is further confirmation of these conclusions.
		From these observations, I assumed that the spot I saw through the IR viewer was the laser emission at 780 nm, and that the visible light was some weak emission at a shorter wavelength.
	www.cat.ernet.in /others/lasinfo/d-vis.html (1006 words)

	[No title]
		Eliminate or reduce the interference E1A10 What is the maximum mean power permitted for any spurious emission from a transmitter or external RF power amplifier transmitting at a mean power of 5 watts or greater on an amateur service HF band?
		It must satisfy the spurious emission standards when driven with at least 50W mean RF power (unless a higher drive level is specified) E1G03 Under what condition may an equipment dealer sell an external RF power amplifier capable of operation below 144 MHz if it has not been granted FCC certification?
		Spurious mixer products are generated E7E10 What type of frequency synthesizer circuit uses a stable voltage-controlled oscillator, programmable divider, phase detector, loop filter and a reference frequency source?
	home.comcast.net /~kg6rzv/extra02-06.txt (18951 words)

	UMTS Co-location, Isolation
		Spurious emissions are emissions, which are caused by unwanted transmitter effects such as harmonics emission, parasitic emission, intermodulation products and frequency conversion products, but exclude out of band emissions.
		The transmit intermodulation performance is a measure of the capability of the transmitter to inhibit the generation of signals in its non linear elements caused by presence of the wanted signal and an interfering signal reaching the transmitter via the antenna.
		The transmit intermodulation level shall not exceed the out of band emission or the spurious emission requirements.
	www.umtsworld.com /technology/isolation.htm (236 words)

	[No title] (Site not responding. Last check: 2007-09-17)
		It must satisfy the spurious emission standards when operated at its full output power E1G05 @A1C05 (D) [97.317a2] Which of the following is one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of FCC type acceptance?
		Any spurious emissions from the amplifier must be no more than 40 dB stronger than the desired output signal E1G07 @A1C07 (B) [97.317a3] Which of the following is one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of FCC type acceptance?
		It must satisfy the spurious emission standards when driven with at least 50 W mean RF power (unless a higher drive level is specified) C.
	www.mtn.org /~handiham/pools/extra/El4-2000.txt (20261 words)

	HamTestOnline™ — Amateur Extra Question Pool
		Eliminate or reduce the interference E1A10 (A) [97.307(d)] What is the maximum mean power permitted for any spurious emission from a transmitter or external RF power amplifier transmitting at a mean power of 5 watts or greater on an amateur service HF band?
		It must satisfy the spurious emission standards when driven with at least 50W mean RF power (unless a higher drive level is specified) C.
		The station's transmitter is producing spurious emissions C.
	www.hamtestonline.com /extra_20020701.htm (19262 words)

	[No title]
		Their protection limits are far lower than the spurious domain emission limits considered practicable at the antenna port of most transmitters, therefore the protection of these services depends on additional mitigating factors such as antenna decoupling and spatial separation.
		that for the purpose of this recommendation, only unwanted emissions in the spurious domain conducted to the antenna port or subsequently radiated by any integral antenna, are subject to the established limits; that the spurious domain emission limits for radio equipment are considered here to be applicable for the range 9 kHz to 300 GHz.
		For discrete spurious emissions, normalisation is not applicable, while integration over the reference bandwidth is still applicable; 5) that the levels of spurious domain emissions should be defined within a reference bandwidth; 6) that the appropriate spurious domain emission limits should be applicable to all services as detailed by Table 1.
	www.ero.dk /doc98/Official/Word/REC7401E.DOC (1906 words)

	[No title] (Site not responding. Last check: 2007-09-17)
		In the first part of the experiment, you are asked to calibrate the wavelength scale by comparing the known ("reported") wavelengths of the emission lines of gaseous mercury with the wavelengths ("observed") of these lines as you read them off the scale of your spectroscope.
		Please note that you may pick up spurious emission lines from the fluorescent lights in the room as well as a general background from daylight coming through the windows.
		In the second part of the experiment, you examine the emission spectrum of hydrogen gas, recording the wavelengths of at least three (maybe four) emission lines as you read them off the spectroscope's wavelength scale.
	www.towson.edu /~debye/chem110/experiments/streamlined/110_emission_h2_stream.html (349 words)

	[No title]
		It must satisfy the spurious emission standards when operated at its full output power E1G05 @A1C05 (D) [97.317a2] Which of the following is one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of Certification?
		It must satisfy the spurious emission standards when placed in the "standby" or "off" position, but is still connected to the transmitter E1G06 @A1C06 (C) [97.317b] Which of the following is one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of Certification?
		Any spurious emissions from the amplifier must be no more than 40 dB stronger than the desired output signal E1G07 @A1C07 (B) [97.317a3] Which of the following is one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of Certification?
	www.discoveret.org /wcars/questionpools/extra.txt (20498 words)

	[No title]
		Because the spurious emissions occupy so wide a portion of that spectrum, technologies used to block one portion of the spectrum (as pulling the shades closed on a window to stop the visible light portion) are not necessarily effective in another portion.
		Unintentional emissions from a computer system can be captured and processed to reveal information about the target systems from simple levels of activity to even remotely copying keystrokes or capturing monitor information.
		That is, preventing the emission of wide-band radio "hash" from your computers, cabling, and peripherals both prevents interference to you and your neighbors television set and limits the useful signal available to a person surreptitiously monitoring.
	www.eff.org /Privacy/Security/tempest_monitoring.article (2471 words)

	Cordless Phone Case: Part 2
		Note for non-technogeeks: A spurious emission is an unintentional radiation on a frequency other than the frequency the transmitter is intended to use.
		Not only does the phone transmit spurious emissions, its fundamental emissions (the frequencies the phone is designed to operate on) are in the 902-928 MHz band.
		The phone that was installed three feet from my radio was found to have been transmitting spurious emissions all over the radio spectrum, and operating on frequencies that I have a license to use as an amateur radio operator.
	www.rapidnet.com /~scansd/case3.html (908 words)

	- Spurious Emissions with the CSM8000 (Site not responding. Last check: 2007-09-17)
		Spurious emissions and Intermodulation effects cause interference to systems.
		The first sign of spurious emissions can be found when a band scan (*.bsc) file is found in the data files.If the CSM8000 detects an unusual signal present on the base station signal.
		By investigating the .bav file it is obvious that a number of channels are common to the occurrence of spurious* emissions.
	www.asteq.com /articles/Spurious.htm (162 words)

	[No title] (Site not responding. Last check: 2007-09-17)
		UWB fractional bandwidth: The fractional bandwidth of an UWB emission is defined as: FBW(%) = 2(fH — fL)*100 / (fH + fL) Activity factor: for applications that do not require the devices to operate continuously, this represents the fraction of time during which an UWB device is actively transmitting.
		UWB spurious emission: Emission on a frequency or frequencies which are outside the UWBnecessary bandwidth and the level of which may be reduced without affecting the corresponding transmission of information.
		UWB spurious domain (of an UWB emission): the frequency range beyond the UWB out-of-band domain in which UWB spurious emissions generally predominate.
	www.eng.usf.edu /wcsp/papers/UWBBasics.doc (2987 words)

	[No title] (Site not responding. Last check: 2007-09-17)
		The cabinet radiation and spurious emissions shall not exceed 2 nW in the frequency range 30 MHz to 2 GHz when the transmitter is in stand-by and shall not exceed 0.25 µW when the transmitter is in operation.
		3 Limits for receiver parameters of the DSC decoder 3.1 Spurious response rejection and blocking The bit error ratio shall not exceed 10—2 for an unwanted input signal level of 73 dBµV (for the spurious response rejection test) and for an unwanted input signal level of 93 dBµV (for the blocking test).
		Offset (kHz)Power (dBc) GSM 900Power (dBc) DCS 1800400—57—50600—67—581 200—74—661 800—74—66Table 6 1.5 Conducted spurious emissions from the transmitter antenna connector Inside the BTS transmit band, the maximum value of the measured power shall not exceed —36 dBm.
	www.hif.hu /english/menu2/m2_6/fnft/fnft-doc/ntfa99a14_21.doc (3293 words)

	ARRLWeb: Element 4A (Advanced) Question Pool
		At least 100 dB A1A11 (D) [97.307e] What is the maximum mean power permitted for any spurious emission from a transmitter having a mean power of 25 W or less on frequencies between 30 and 225 MHz?
		It must satisfy the spurious emission standards when operated at its full output power A1C05 (D) [97.317a2] Which of the following is one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of FCC type acceptance?
		Any spurious emissions from the amplifier must be no more than 40 dB stronger than the desired output signal A1C07 (B) [97.317a3] Which of the following is one of the standards that must be met by an external RF power amplifier if it is to qualify for a grant of FCC type acceptance?
	www.columbia.edu /~alan/ham/poolfigs/advanced.html (20155 words)

	EMS & Safety Journal 1-97
		Average power of spurious emission at the individual frequencies fed to the feeder
		Spurious emission refers to radio wave emissions at one or more frequencies outside the necessary frequency bandwidth, the level of which can be reduced without affecting the performance of data transmissions.
		Radio emission that occurs during the modulation process for data transmission at frequencies close to the necessary frequency bandwidth is not included.
	www.etek.chalmers.se /~iraj/2.html (567 words)

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