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Topic: Transmitter power output

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	Digital TV: Charles W. Rhodes
		The FCC proposes for unlicensed transmitters operating in the TV bands (Channels 4-51), a transmitter power output limit of 1 watt in the white channel for fixed facilities and 100 mW for portable facilities.
		Those loose ends involve the proper use of a spectrum analyzer as the power output measurement instrument.
		So perhaps the topic of DTV signal power, which is so different from analog TV signal power, is of interest to many readers.
	www.tvtechnology.com /pages/s.0072/t.p0001.html (1000 words)

	Reference.com/Encyclopedia/Transmitter power output
		In radio transmission, transmitter power output (TPO) is the actual amount of power (in watts) of radio frequency (RF) energy that a transmitter produces at its output.
		This is not the amount of power that a radio station reports as its power, as in "we're 100,000 watts of rock 'n' roll", which is usually the effective radiated power (ERP).
		There is also some loss (negative gain) from the feedline, which reduces some of the TPO to the antenna by both resistance and by radiating a small part of the signal.
	www.reference.com /browse/wiki/Transmitter_power_output (180 words)

	Closed loop power transmitter power control unit for a CDMA cellular system - Patent 6070086
		The closed loop power control unit of claim 9, wherein said second estimation means further comprises means for calculating the leaky integration or the average between the slots for the interference power, wherein a measured interference power deviation is reduced by integration or averaging.
		The signal power is estimated by the power of the re-modulated signal.
		The interference power is estimated by the power of (i1, i2,.
	www.freepatentsonline.com /6070086.html (6563 words)

	Cordless telephone system having automatic control of transmitter power and frequency in response to changing ...
		A communications system according to claim 2 wherein the transmitter and receiver pair of each said two communications units interchange frequency availability data prior to establishing a communication session, such that said data is used during said communication session for synchronizing the frequency hopping patterns of said transmitter and receiver pair.
		T50, respectively, at a transmitter frequency of F1 for each flame, indicating a single frequency of transmitter output with a power level of a maximum of 1 milliwatt as indicated for each of the fifty frames in FIG.
		For example, during frame T1 the transmitter may be operating on frequency F1 at a maximum power of one watt, while during frame Tn the transmitter may be operating on frequency Fn at a maximum power of one watt.
	www.freepatentsonline.com /5528623.html (4217 words)

	The Gadgeteer - Audia-x FM Transmitter Version 2 Review
		The Audia-x FM Transmitter Version 2 is a 3" long with 1" diameter device that plugs into any audio device with a headphone jack and airs the content over an empty FM station of the user's choosing.
		What I particularly like about this transmitter, other than the fact that it nicely matches my Sony NW-HD1, is that I don't have to worry about the battery dying on me during long usage periods in the car.
		The Audia-x FM Transmitter Version 2 is a handy way to enjoy your personal audio content in a more public manner.
	www.the-gadgeteer.com /audiax-fm-transmitter-v2-review.html (559 words)

	Transmitter power
		While this approach has served the broadcast industry for many years, the use of simple in-line power meters in complex modulated signal systems is limited by the inability of simple diode detectors to respond to signals with high peak to average power characteristics common to digital modulation formats.
		Diode detectors in conventional in-line power meters are operated largely over the nonlinear portion of their dynamic range with their accompanying meter scales calibrated to read average power, even with the diode operating in a nonlinear fashion.
		The effects of mismatch uncertainty between the input to the power sensor and the output of the directional coupler are significant.
	broadcastengineering.com /products/transmitter-power (1082 words)

	The adjustment of transmitter power for HamDRM
		It is necessary to carefully adjust the power output for HamDRM transmissions, because the DRM signal has a very high maximum peak power level.
		A Bird wattmeter indicates that the RMS power is 12.5 W.
		If it is adjusted for higher average power, the peaks of the signal will be clipped and cause serious distortion of the signal, degrading the decoding performance at the receiving station.
	www.tima.com /~djones/DRM_power.htm (845 words)

	Transmitter power output
		Transmitter power output (TPO) is the actual amount of power (in watts) of RF energy that a transmitter produces at its output.
		This is not the amount of power that a broadcast station reports as its ERP, such as "we're 100,000 watts of rock 'n' roll", but is in fact many times less for the high-power stations.
		There is also some loss (negative gain) from the feedline, which reduces some of the TPO to the antenna by both resistance and by radiating a small part of the signal.
	www.xasa.com /wiki/en/wikipedia/t/tr/transmitter_power_output.html (123 words)

	radio7
		Transmitter power is affected by the DC power supply voltage.
		Power is of course proportional to V squared, which accounts for the sensitivity of transmitter power output to the supply voltage.
		The power output of a transmitter is a function of the DC power input to the final stage and the efficiency of the final stage.
	www.refreq.com /rfworld/radio7.html (568 words)

	Build a 2 meter duplexer
		Transmitter output on 146.94 MHz going from point C to D should not be attenuated.
		However, the transmitter energy should be greatly attenuated between points B and A. Duplexer section 2 should attenuate any noise or signals that are on or near the receiver input frequency of 146.34 MHz.
		For 60 watts of output (+48 dBm), the noise is -32 dBm.
	www.repeater-builder.com /rbtip/2mduplexer.html (2051 words)

	WC2XSR/13 Station Log
		The transmitter power output to the antenna is 400 watts.
		Since the front panel of the transmitter is rather crowded, it was necessary to remove the FAN power switch and move the PA POWER ON switch to that location.
		Transmitter power output is 400 watts at 166.500 KC.
	w5jgv.com /166r5_logs/wc2xsr-13_log-2003.htm (1034 words)

	ARRLWeb: Field Day 2006 Rules
		The maximum transmitter output power for the GOTA station shall be 150 watts.
		Power multipliers: The power multiplier that applies is determined by the highest power output of any of the transmitters used during the Field Day operation.
		The power multiplier for an entry is determined by the maximum output power used by any transmitter used to complete any contact during the event.
	www.arrl.org /contests/rules/2006/rules-fd-2006.html (3865 words)

	Where There Is No Telephone
		The power output of SSB transceivers is defined by its Peak Envelope Power (PEP) which is about 3 times the average power output.
		You may be able to reduce the power output of your 100 watt transceiver to a lower level if required but you cannot increase the power output of a 40 watt one without buying more equipment.
		A rough guide of the average input power required by a transceiver, during transmission, is 2/3 of the PEP watts.
	www.reliefweb.int /library/wtint/chap3.html (5919 words)

	ProSoundWeb \| Real World: Wireless products
		Transmitter power output is lower than some competitive units, but the range is usually adequate.
		Transmitter power output is 50 mw and the receiver sensitivity is very good.
		Transmitter power is 30 mw, a bit less than some competitive units.
	www.prosoundweb.com /lsi/realworld/wireless/products.php (1843 words)

	Transmitter power output (Site not responding. Last check: )
		Transmitter power output (TPO) is the actual amount of power (in watts) of RF energy that a transmitter produces.
		This is not the amount of power that a station reports as its ERP, such as "we're 100,000 watts of rock 'n' roll", but is in fact many times less for the high-power stations.
		The antenna's design "magnifies" the signal toward the horizon, creating gain.
	pedia.newsfilter.co.uk /wikipedia/t/tr/transmitter_power_output.html (77 words)

	Helpful CCTV Glossary
		Such power inverters are commonly used to power 110 volt AC devices (such as a VCR video recorder) from a DC automotive or marine battery.
		In most cases, the RF output plug refers to the type of plug coming from a wireless antenna for connecting into the RF antenna input plug on a wireless transmitter or receiver.
		RF output power is typically measured in milliwatts (mW) or watts (W).
	www.eyespyvideo.com /faq/cctvglossary.htm (12216 words)

	Sound & Communications - Audio
		If reduced transmitter output power is chosen as an approach, time must be devoted to some walk-testing to determine the optimal amount of attenuation that would allow just enough output to cover the meeting room (or rooms), but not reach much beyond the walls.
		With reduced transmitter output power, the wireless system will be operating near dropout conditions all of the time, and multi-path nulls will be more prevalent.
		For example, an off-the-shelf digital wireless system with reduced output power may be sufficient for some temporary setups, but would require only that someone have a receiver of the same make and model and a high gain antenna to effectively eavesdrop.
	www.soundandcommunications.com /audio/2003_04_audio.htm (2281 words)

	Cisco Aironet Antenna Reference Guide [Cisco Aironet Antennas and Accessories] - Cisco Systems
		Conversely, a decrease of 3 dB is a halving (1/2) of power, and a decrease of 6 dB is a quarter (1/4) the power.
		For the UNII3 band, where the BR1400 operates, the FCC limits the transmitter power to 1 watt or 30dBm, and the antenna gain of an omni directional antenna to 6 dBi.
		To use a larger antenna, the transmitter power must be reduced so that the overall gain of the transmitter, plus the antenna gain, less any losses in coax, is equal to or less than +20 dBm.
	www.cisco.com /en/US/products/hw/wireless/ps469/products_data_sheet09186a008008883b.html (5277 words)

	Jim's TV and FM Transmitter Page
		Transmitter power output control is achieved in the exciters using PIN diode attenuators.
		Aural power is required to be between 7 and 22 % of the peak visual power.
		But watt meters measure average power, so it is necessary to convert average power to peak power to determine the actual operating power at peak of sync.
	hawkins.pair.com /tvcorner.shtml (1211 words)

	RWonline - Feed Line
		It is not uncommon for a given ERP and antenna gain to have the transmitter power level determined by the transmission line size and type.
		Next, go to the manufacturer's catalog and find a line that exceeds the calculated line output power by a good margin, keeping in mind that the input power (which is the maximum power the line will have to carry) will be somewhat higher.
		Divide the antenna input power by the TPO and multiply by 100 to calculate the efficiency of the line in percent.
	www.rwonline.com /reference-room/feed-line/08_rwf_feed_part_7.shtml (967 words)

	[No title]
		This paper presents the estimated power output of the WE-13C transmitter at harmonic frequencies.
		The final power amplifier of the WE-13C transmitter was a Class-C amplifier using 2 Western Electric type 282A tetrode (screen grid) vacuum tubes in parallel.
		The output power at a given harmonic is the product of its power ratio and the WE-13C output power at the fundamental, which was 50 watts (Morgan, 1941).
	www.tighar.org /Projects/Earhart/ResearchPapers/Brandenburg/WE-13.htm (661 words)

	Energy-Onix 518-758-1690
		The LEGEND C-SERIES transmitters are completely solid state, and the ECO SERIES transmitters incorporate solid-state drivers and 1-tube grounded grid outputs.
		All transmitters (except Legend 1500C and Legend 2000C) and the FM3 series antennas utilize 1 5/8" EIA flanges.
		In order for this to be accomplished, a gas barrier connector (with pressurization port) is installed at transmitter end of cable, and a gas pass connector is installed at the antenna input.
	www.energy-onix.com /HTML/Medium.html (667 words)

	Re: What does Antenna Gain Mean? If a transmitter output is 100Watts and your
		This power is derived from a combination of transmitter power
		An isotropic antenna transmits equal amounts of power in all directions.
		At the receiver, a 100 watt transmitter with a 3dBi antenna produces the power density equal to
	www.madsci.org /posts/archives/apr2001/988230924.Eg.r.html (866 words)

	Re: Voice QSO at 1819
		(d) No station may transmit with a transmitter power exceeding 25 W PEP on the VHF 1.25 m band when the control operator is a Novice operator.
		(e) No station may transmit with a transmitter power exceeding 5 W PEP on the UHF 23 cm band when the control operator is a Novice operator.
		The transmitting antenna elevation angle between the lower half-power (-3 dB relative to the peak or antenna bore sight) point and the horizon must always be greater than 10\o\.
	www.amsat.org /amsat/archive/sarex/200104/msg00429.html (410 words)

	Energy-Onix 518-758-1690
		Locate the desired ERP value on the chart, and then follow the row and column entries to find the optimum Energy-Onix transmitter and SWR FM10 antenna for your facility.
		The "ball of radiation" produced by a low gain antenna is sometimes the optimum choice, particularly for areas where multi-path (reflection) propagation is a problem and a narrow beam width is undesirable.
		Transmission line must be pressurized with dry air or nitrogen to prevent moisture intrusion.
	www.energy-onix.com /HTML/High.html (667 words)

	Polar Heart Rate Monitor Product Line
		Polar S725x - The S725X is the only complete cycling system that combines heart rate with speed, distance, altitude, ascent, cadence and optional power output.
		Polar CS600 With Power Cycle Computer - The CS600 is for both the professional cyclist and for the cyclist who wants to ride with the best.
		You need the most powerful, most personal, most dedicated tools to give you the edge.
	www.polar-usa.us (924 words)

	Re: Voice QSO at 1819 Violation of FCC Rules
		Peak Envelope Power means the amount of RF energy (in watts) leaving your antenna, not leaving your radio!
		(d) No station may > transmit with a transmitter power exceeding 25 W PEP on the > VHF 1.25 m band when the > control operator is a Novice operator.
		(e) No station may > transmit with a transmitter power > exceeding 5 W PEP on the UHF 23 cm band when the control > operator is a Novice operator.
	www.amsat.org /amsat/archive/sarex/200104/msg00439.html (606 words)

	Semiconductors datasheet Parts begin by 12 Page2
		1241 : Description = Uncooled Laser Transmitter ;; Applications = Inter- And Intraoffic
		1243 : Description = Uncooled Laser Transmitter ;; Applications = Inter- And Intraoffic
		1245 : Description = Uncooled Laser Transmitter ;; Applications = Inter- And Intraoffic
	www.digchip.com /datasheets/parts/12/parts_1202.php (468 words)

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