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	EIRP: Effective Isotropic Radiated Power (Site not responding. Last check: 2007-10-18)
		Effective Isotropic Radiated Power (EIRP), also known as Equivalent Isotropically Radiated Power, is the amount of power that would have to be emitted by an isotropic antenna (that evenly distributes power in all directions and is a theoretical construct) to produce the peak power density observed in the direction of maximum antenna gain.
		EIRP can take into account the losses in transmission line and connectors and includes the gain of the antenna.
		The EIRP is often stated in terms of decibels over a reference power level, that would be the power emitted by an isotropic radiator with an equivalent signal strength.
	www.javvin.com /wireless/EIRP.html (137 words)

	Encyclopedia: EIRP
		In radio communication systems, Effective isotropically-radiated power (EIRP) is the amount of power that would have to be emitted by an isotropic antenna (that evenly distributes power in all directions) to produce the peak power density observed in the direction of maximum antenna gain.
		The EIRP is often stated in terms of decibels over a reference power level, that would be the power emitted by an isotropic radiator with an equivalent signal strength.
		The EIRP is used to estimate the service area of the transmitter, and to co-ordinate transmitters on the same frequency so that their coverage areas do not overlap.
	www.nationmaster.com /encyclopedia/EIRP (438 words)

	Electric Integrated Resource Plan
		An EIRP is a long-term strategic plan, which combines technical analysis and public participation, used for business development that also meets the requirements of the Energy Policy Act of 1992.
		To arrive at the final plan, energy planners took a number of factors into consideration, which constantly change, such as cost, efficiency, legislative regulations, competition, customer preferences, the environment, and population are keys to a successful planning effort.
		The EIRP provides a balanced and responsible plan that meets reliability requirements; is fiscally sound; promotes environmental stewardship; and balances risk and cost.
	www.csu.org /environment/energy/eirp/index.html (508 words)

	What is EIRP???
		Well, one theory could say that EIRP is one of our moderator buddies, but here h**p://www.csgnetwork.com/antennaecalc.html you can find a more comprehensive definition of Effective Isotropic Radiated Power, and some tools to calculate it from the antenna gain and the actual transmitted output power.
		EIRP is a measure of approximate power radiated from an antenna.
		By virtue of the gain of a radio antenna (or dish), a beam is formed that preferentially transmits the energy in one direction. The EIRP is estimated by adding the gain (of the antenna) and the transmitter power (of the radio).
	www.edaboard.com /ftopic105417.html (404 words)

	St. John's University -- Academics & Schools -- Graduate -- The Peter J. Tobin College of Business -- Academics and ...
		The Executive-in-Residence Program (EIRP) is a unique feature of The Peter J. Tobin College of Business in that it provides to both the undergraduate and graduate students in-school opportunities to engage in real-world business consulting with actual business and non-profit organizations.
		Admission into EIRP classes is competitive and students must apply and receive a notice of acceptance from the Program Director prior to registration.
		Students receive academic credit for their work in EIRP and are regularly partnered with organizational executives throughout the course, which is supervised by a senior Tobin College faculty member.
	www.stjohns.edu /eirp (227 words)

	[No title]
		Because EIRP describes the amount of energy that is actually being radiated, it is the parameter that is pertinent to understanding the RF environment for coordinating stations and mitigating interference.
		For aural BAS in the 944-952 MHz band, we propose to limit EIRP to 40 dBW, which is identical to the limit specified in Part 101 for FS in the 941.5-944 MHz and 952-960 MHz bands.
		The EIRP limits for mobile BAS can be generated using the maximum allowable transmitter power currently specified in the Part 74 rules in conjunction with the gain of commonly available antennas.
	www.fcc.gov /ftp/Bureaus/Engineering_Technology/Notices/2001/fcc01092.txt (20328 words)

	Melbourne Wireless >> wiki board >> EIRP
		The ACMA had previously defined two EIRP limits in the 2.4 GHz ISM band, but has revised the rules now into one limit.
		Between the ranges of 2400 MHz to 2483.5 MHz, the limit is a maximum of 4 W (watts) EIRP.
		EIRP = Tx power x Antenna Gain / Feedline Loss
	melbourne.wireless.org.au /wiki/?EIRP (141 words)

	AUTOMATED EIRP MEASUREMENTS ON A NEAR-FIELD RANGE
		Accurate EIRP measurements are possible to make on a near-field range but require great care and attention to detail.
		Measuring EIRP directly is useful for two reasons: 1.) Often the antenna port where the gain would be measured is not available such as in satellite measurements and 2.) Individual cable losses for multi-beam antennas need not be calibrated since the input power is often not important for EIRP.
		The key to Automated EIRP measurements on a multi-beam antenna is reducing pre-calibration, acquisition and processing time required to produce the plots and files.
	www.nearfield.com /amta/amta96gm.htm (1236 words)

	Siemens Communications Lexicon - automatic baud rate detection (ABR)
		The EIRP measures the quality of transponder and antenna radiation, which includes transmitter power and antenna gain.
		The EIRP is the ratio of the antenna gain compared with the gain of a theoretical (isotropic) antenna and is expressed in Watt (W) or dBW.
		EIRP is relevant to the field strength of the downlink signal transponder as received by the earth bound station.
	networks.siemens.com /communications/lexicon/0/f007680.htm (194 words)

	SUTRON UPLINK EIRP
		Uplink EIRP is a combination of power transmitted by a transmitter and gain added to the transmitter by an antenna minus any cable losses.
		Uplink EIRP is referenced after the antenna contribution before any free space loss is encountered.
		EIRP = 39.29 dBm + 11.0 dB - 1.2 dB -.25 dB = 48.84 dBm EIRP
	www.sutron.com /customerservice/Conversions_Calcuations/UplinkEIRP.htm (241 words)

	HauteSpot Networks Forums - EIRP Limits?
		EIRP represents the total effective transmit power of the radio, including gains that the antenna provides and losses from the antenna cable.
		When using omni-directional antennas having less than 6 dB gain in this scenario, the FCC rules require EIRP to be 1 watt (1,000 milliwatts) or less.
		The FCC eases EIRP limitations for fixed, point-to-point systems that use higher gain directive antennas.
	www.hautespot.net /Forum/topic.asp?TOPIC_ID=122 (739 words)

	Satcoms UK - Satellite Communications - The Terminology
		So the EIRP is a comparative measurement which is used to compare every antenna to one single reference, the Isotropic antenna.
		The ratio of the power required at the input of a loss-free isotropic reference antenna to the power supplied to the input of the given antenna to produce, in a given direction, the same field strength at the same distance.
		To calculate the EIRP then we just add the two numbers together.
	www.satcoms.org.uk /terms.asp (1009 words)

	FCC EXTENDS WESTERN MULTIPLEX WAIVER
		EIRP is the combination of the radio output power, the antenna gain and any losses between the radio and antenna.
		Without EIRP limits in these two ISM bands, reasonable links can be established up to approximately 50 miles.
		The FCC originally enforced EIRP limits for spread spectrum transmitters because it was believed that there might be interference without these limits.
	www.prnewswire.com /cgi-bin/stories.pl?ACCT=105&STORY=/www/story/24518 (651 words)

	calculating EIRP (power) - XtremeDevices.com (204) 292-9724 (Site not responding. Last check: 2007-10-18)
		EIRP is the value that regulatory agencies use to determine and measure power limits in applications such as 2.4GHz wireless equipment.
		EIRP is calculated by adding the transmitter power (in dBm) to the antenna gain (in dBi) and subtracting the cable loss (in dB).
		The standards in North America are not to exceed an EIRP of 4Watts or +36dBm for 2.4GHz multipoint systems.
	xtremedevices.com /power.html (148 words)

	Calculation of Transmit EIRP (in dB W)&operating FD
		Transmit power –per carrier It is the power given to the antenna at the Earth station to radiate power.
		EIRP is often expressed in decibels relative to 1 watt, or dBW.
		The flux density required in the receiving antenna to produce saturation of the TWTA is termed the saturation flux density.
	www.tutorialsweb.com /satcom/link-power-budget/transmit-eirp.htm (505 words)

	broadband help » Forums » Wireless Service Providers » PtP vs. PtMP and max EIRP
		I initially thought it was based on the principle that highly directional antennas were allowed the higher EIRP based on the fact they are not spewing RF in all directions and not solely on the number of clients.
		Also, cranking EIRP on the CPE, while legal, is not good stewardship of spectrum because the signal would cross over the water tower and hit Tim's backhaul.
		I suspect illegal EIRP but cannot prove it and they are not likely to 'fess up.
	www.dslreports.com /forum/remark,16869508 (2179 words)

	What is Effective Isotropic Radiated Power (EIRP)? \| Austin Wireless (Site not responding. Last check: 2007-10-18)
		Effective Isotropic Radiated Power (EIRP) in a particular direction is the power that would have to be supplied to an isotropic antenna to achieve the same field strength.
		Where P is the wireless LAN or radio modem power in watts, dBi is the antenna gain, and EIRP is the effective isotropic radiated power in watts.
		EIRP = (0.1) * 10 1.6 = 3.98 watts.
	austinwireless.net /node/34 (449 words)

	Re: Cisco says Multipoint Clients can't exceed 36dB EIRP ? - ISP-Wireless Archive
		You can stay in the eirp rules for ptp (client side of a ptmp is also ptp) at 60 watts (24db tx and 24db antenna).
		However, a properly tested and certified system > is allowed to exceed the 4W EIRP for a > point-to-point system.
		You cannot > exceed the 4W EIRP for any of the legs of this system since the > whole system is a point to multipoint.
	isp-lists.isp-planet.com /isp-wireless/0203/msg05848.html (323 words)

	RSM ~ Information Library ~ Publications ~ RFS37 (Site not responding. Last check: 2007-10-18)
		The calculated eirp shall not exceed the limit specified on the transmitter licence, after measurement tolerances have been taken into account.
		Note that the measurement tolerances will be dependent on which measuring authority is making the measurements, their certificate/calibration procedures and measurement methods.
		The emission shall be monitored with a spectrum analyser, which shall be set to display the emission in the peak hold mode.
	www.med.govt.nz /rsm/publications/equip-specs/rfs37/rfs37-4.html (342 words)

	FCC Rules Dictate Antenna Use
		The key to applying these rules is to understand EIRP (equivalent isotropically radiated power), which represents the total effective transmit power of the radio, including gains that the antenna provides (and losses from the antenna cable).
		A 6 dB antenna doubles the EIRP to 400 milliwatts, a 9 dB antenna doubles it again to 800 milliwatts, and so on.
		The reason higher EIRPs are acceptable is that the higher gain antennas are more directive, which reduces the possibility of RF interference with other systems.
	www.pacwireless.com /support/fcc_eirp.shtml (399 words)

	EIRP Limitations for 802.11 WLANs (Site not responding. Last check: 2007-10-18)
		EIRP represents the total effective transmit power of the radio, including gains that the antenna provides and losses from the antenna cable.
		The FCC eases EIRP limitations for fixed, point-to-point systems that use higher gain directive antennas.
		As you can see, the deployment of a wireless LAN for typical mobile applications using omni-directional antennas is fairly straightforward in terms of EIRP limitations.
	www.80211-planet.com /tutorials/article.php/1428941 (803 words)

	Satellite Footprints by Dish Size - Antenna Aperture Charts - EIRP vs. Diameter for PAL27, PAL 36, MAC 27 Series, ...
		Among the most requested items in RWT's systems consultancy days was the dish size versus EIRP chart.
		Note the range of EIRPs covered is 10dB below that of the Ku-Band charts, as encountered with typical satellites.
		This lower level of redundancy means about a 1dB higher G/T (larger dish) is required for a given EIRP, relative to the European example, despite the lower symbol rate.
	www.geo-orbit.org /sizepgs/eirporgcharts.htm (607 words)

	FCC 27.50 as of September 28, 2005 - hallikainen.com (Site not responding. Last check: 2007-10-18)
		The measurement results shall be properly adjusted for any instrument limitations, such as detector response times, limited resolution bandwidth capability when compared to the emission bandwidth, etc., so as to obtain a true maximum composite measurement for the emission in question over the full bandwidth of the channel.
		Operations above 1640 watts EIRP must also be coordinated in advance with the following licensees within 120 kilometers (75 miles) of the base or fixed station: all Multipoint Distribution Service (MDS) licensees authorized under Part 21 in the 2155–2160 MHz band and all AWS licensees in the 2110–2155 MHz band.
		If a non-uniform emission were substituted at the station, station power would still be limited to a maximum of 33.3 watts EIRP within any 100 kHz segment of the 6 MHz channel, irrespective of the fact that this would result in a total 6 MHz channel power of less than 2000 watts EIRP.
	www.hallikainen.com /FccRules/2005/27/50 (946 words)

	Wi-Fi Planet Forums - power density levels
		What I am unclear of is whether this is the antenna EIRP that the user/operator should not exceed or is this the max power signal that can arrive at the infeed of the transmitting antenna which could get further boosted by another 6 dbi (Omni antenna gain), hence up to a max of 36 dBm?
		In other words, you can break the 36dBi EIRP limit legally the more focused (and therefor generally higher gain) your antenna is as long as you drop the the TX power output.
		So while the EIRP 36dBi/4watt limit is set for a 30dB transmitter with a 6dBi antenna, you can use a 9dBi gain antenna at a 29dB TX power level.
	forums.wi-fiplanet.com /showthread.php?threadid=439 (493 words)

	NTIA Comments Mobile Satellite Service (MSS) Rulemaking
		The NTIA recommended limits for MSS ATC components (base station transmitters (BTS), pico base stations, and mobile terminals (MT)) in our November 12, 2002 are shown in Attachment 1.
		Therefore, to maintain the desired performance availability, the EIRP limit for the MSS ATC mobile terminal should be -65 dBm/MHz.
		EIRP is the equivalent isotropically radiated power level of the transmitter (dBm/MHz);
	www.ntia.doc.gov /ntiahome/fccfilings/2003/mssatcltr_012403.htm (966 words)

	Re: [sarex] eirp (Site not responding. Last check: 2007-10-18)
		EIRP, or effective isotropic radiated power, is power output multipilied by antenna gain.
		The difference between that and the 5 kW eirp I cited was supplied by antenna gain less coax loss.
		I've been in his shack at the time and his Bird wattmeter indicated 1500 watts output.
	www.uk.amsat.org /ListArchives/sarex/2001/msg00575.html (173 words)

	broadband help » Forums » Wireless Service Providers » So, client on PTMP can be EIRP 36. Right or ...
		eirp towards the tower and the FCC is going to give a "ratz hinderst parts".
		eirp is not the max allowed for a client.
		eirp of 16 watts and is FCC Certified also for PtP (and client use).
	www.broadbandreports.com /forum/remark,8180488?hilite=eirp (1884 words)

	International Bureau >> Common Defects
		For example, on the FCC Form 312, Schedule B, the maximum EIRP density per carrier (question E49) is less than the average EIRP density per carrier as computed by using the Maximum EIRP per carrier (question E48) and the necessary bandwidth in the Emission Designator (question E47).
		Specifically, the maximum EIRP density per carrier (question E49) must be greater than or equal to the computed average EIRP density per carrier generated from Maximum EIRP per carrier (question E48) and the necessary bandwidth in the Emission Designator (question E47).
		The Total EIRP for all carriers (question E40) must be consistent with the Total Input Power at the Antenna Flange (question E38) and the Antenna Transmit Gain (question E41/42).
	ftp.fcc.gov /ib/sd/esa/defect.html (1601 words)

	Section
		1640 W EIRP MDS licensees are required to attach a label to subscriber transceiver or transverter antennas that: (1) provides adequate notice regarding potential radiofrequency safety hazards, e.g., information regarding the safe minimum separation distance required between users and transceiver antennas; and (2) references the applicable FCC- adopted limits for radiofrequency exposure specified in Sec.
		In addition, for NGSO subscriber equipment, licensees are required to attach a label to subscriber transceiver antennas that: (1) provides adequate notice regarding potential radiofrequency safety hazards, e.g., information regarding the safe minimum separation distance required between users and transceiver antennas; and (2) references the applicable FCC- adopted limits for radiofrequency exposure specified in Sec.
		1640 W EIRP ITFS licensees are required to attach a label to subscriber transceiver or transverter antennas that: (1) provides adequate notice regarding potential radiofrequency safety hazards, e.g., information regarding the safe minimum separation distance required between users and transceiver antennas; and (2) references the applicable FCC- adopted limits for radiofrequency exposure specified in Sec.
	a257.g.akamaitech.net /7/257/2422/05dec20031700/edocket.access.gpo.gov/cfr_2003/octqtr/47cfr1.1307.htm (1990 words)

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