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Topic: Antenna analyzer

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	Antenna Design (Site not responding. Last check: 2007-11-03)
		The EXPRESS antennas were analyzed by computer modeling to include the cable and ferrite toroids placed to drastically reduce the coupling and potential for radio interference problems.
		When these antennas are installed on the composite wing, tail or fuselage part the resonant frequency shifts down, an amount depending on the amount of material in close proximity to the antenna elements.
		The antenna is then trimmed and rechecked with the antenna analyzer until the resonant point is in the center of the frequency band.
	www.express-aircraft.com /antenna_design.htm (455 words)

	Antenna analyzer (Site not responding. Last check: 2007-11-03)
		Antenna Manufactory Manufactory of TV antenna since 1979.
		Octaloop Antenna A gif schematic of a 8 sided antenna with mount details.
		WIP Ethernet Analyzer A WIN-based Ethernet Analyzer, which has professional features and simple interface, include snoop, analyzer, record, print.
	www.serebella.com /encyclopedia/article-Antenna_analyzer.html (334 words)

	Antenna Analyzer II - Software for the Micro908 Kit
		The Micro908 Antenna Analyzer II is a small and inexpensive measurement device designed to determine antenna performance across the amateur bands through use of automatically collected SWR and complex impedance readings.
		The Antenna Analyzer II is able to connect up to the serial port of a PC for uploading of raw measurement data and remote control of the unit.
		After the Analyzer has completed a manual or automatic data collection scan, it may be connected to a host PC which is running software that uploads the frequency/SWR data from the unit and displays a graphical plot of that data on the video monitor.
	www.amqrp.org /kits/antanal (1532 words)

	Antenna analyzer (Site not responding. Last check: 2007-11-03)
		An antenna analyzer (or noise bridge, or RX bridge) is a Wheatstone bridge where the legs are frequency-dependent complex-valued impedances.
		The east and west corners of the bridge are driven with a white noise source, and the north and south corners are connected to the input of a radio receiver which is tuned to the desired frequency range.
		The SWR meter works by minimizing the reflected wave from the antenna back to the transmitter, which is minimal when the antenna is balanced.
	www.worldhistory.com /wiki/A/Antenna-analyzer.htm (367 words)

	KA9FOX: Antennas, Towers and Feedline Reflector Summaries
		Date: Sun, 27 Jul 1997 07:40:10 -0600 (MDT) Subject: Re: [TowerTalk] Re: Antenna analyzers One thing that seems to help with this problem is to use a "bead balun" at the input to the Autek and MFJ units.
		If you have an antenna analyzer that reads > high values of swr with reasonable accuracy, the measurement > can be done from the comfort of your radio room, without > disconnecting the antenna.
		73, Dick, WC1M -- I have 2 antenna analyzers: the MFJ-259 and the Autek RF-1.
	www.qth.com /ka9fox/antenna-analyzers.html (12759 words)

	Analyzer
		The Rainbow Antenna Analyzer is a small and inexpensive measurement device designed to determine antenna performance across the amateur bands through use of automatically collected SWR readings.
		Frequency and SWR data may be downloaded to a PC optionally attached to the Rainbow Analyzer via an RS-232 serial cable.
		The PC may also be used to remotely control the Analyzer for manual selection of frequencies of interest.
	www.njqrp.org /mbrproj/analyzer/analyzer.html (203 words)

	Antenna Analyzer - Ham Radio Project - Doug's Domain / WA0VSL (Site not responding. Last check: 2007-11-03)
		The FT-817 output is connected to the analyzer source input and the antenna under test is connected to the analyzer load output.
		The banana jacks on the analyzer are connected to a DVM.
		By the way, Joe and George have really made a LOT of progress on their antenna analyzer project (the REAL thing), be sure to check it out!
	home.earthlink.net /~wa0vsl/antanal.html (1658 words)

	Antenna Systems & Technology Executive E-Report (Site not responding. Last check: 2007-11-03)
		With a "smart antenna" chip, signal fade and interference are diminished, while the cell phone's range is increased and battery life is extended.
		Radio and television signals are captured using antennas close to the size of the wavelength of broadcast radiation.
		An interference analyzer measures interfering signals and displays their standard and bandwidth so that field technicians can quickly identify interfering signals to reduce dropped calls and coverage problems.
	www.antennasonline.com /ast_newsletter_10-04.htm (2204 words)

	Audio Talk! - Radio Amateur Antenna
		Antenna will be an 88ft doublet 30-40ft high supported at the center by a ladderlock and fed by 450ohm windowline.
		When the antennas were ordered to replace a Celwave P654, I was told that two 224 and and the proper phasing harness would be the same.
		The object is to switch the feedpoints of a rhombic antenna from one end to the other....
	www.allaudio.org /group-759-401.html (3828 words)

	Antenna analyzer and non-resonant antenna (Site not responding. Last check: 2007-11-03)
		I have built an antenna analyzer (AA-908) that reports SWR, complex impedance, capacitance and inductance.
		I am at this point interested in finding the frequencies in 160M band at which this antenna and particular-length feedline will propagate.
		Cecil Moore Antenna analyzer and non-resonant antenna
	www.talkaboutradio.com /group/rec.radio.amateur.antenna/messages/237028.html (148 words)

	MFJ 259 Antenna Analyzer Review (Site not responding. Last check: 2007-11-03)
		Where previously you one had to either use the radio in the shack or bring a radio outside to connect to the antenna in some way, you now are able to connect the 259 directly to the antenna and get all the information you need as to the antenna's status.
		Not all antennas will be broadbanded enough to completely cover the band for which it was designed.
		So, an antenna tuner can be used for those situations where you occasionally operate beyond the nominal SWR limits of your transceiver.
	www.clarc.org /Articles/mfjan.html (643 words)

	MFJ 259 antenna analyzer calibration, problems, and service warnings
		The bridge is dc-coupled from an internal resistor bridge to the antenna port.
		Because of that, large antennas should be tested at times when propagated signals in the range of the antenna's response are at minimum strength.
		An antenna analyzer could calculate everything (except sign of reactance) from measuring only Vs and Vz, but at certain impedances any small error in either Vs and Vz becomes critical.
	www.w8ji.com /mfj-259b_calibration.htm (3495 words)

	Antenna Testers & SWR Meters, Antenna Testers, SWR Meters \| TESSCO 800 472 7373 (Site not responding. Last check: 2007-11-03)
		This means you can measure any circuit or antenna Z from 10 to 2000 Ohms.
		Tuning antennas for the lowest VSWR can be a difficult and lengthy process.
		Two modes of operation: swept, for sweeping the antenna between two frequencies, and single, for determining antenna performance at one particular frequency.
	www.tessco.com /products/displaySkus.do?groupId=490&subgroupId=10 (338 words)

	Antenna Analyzer (Site not responding. Last check: 2007-11-03)
		This analyzer is based around an old UHF VCR tuner.
		It works by tapping the local oscillator inside the VCR tuner to then feed a return loss bridge, which is hooked to your antenna system.
		This particular setup will analyze antennas from 436 to 920 MHz.
	www.qsl.net /n9zia/wireless/antenna-analyzer-pics.html (105 words)

	[No title] (Site not responding. Last check: 2007-11-03)
		An SO259 socket on the top of the unit is used for connecting to antenna coax and a BNC socket is used for frequency measurement purposes.
		There are two red buttons on the top, one selects the input, i.e use as an antenna analyzer or frequency meter, and the other selects the accuracy of the readout (to seven decimal places!).
		In use, the unit is connected via a short length of coax to the feed point of the antenna, and the tuning control is adjusted until the lowest SWR is seen in the left hand meter.
	www.g3ycc.karoo.net /mfj259.htm (572 words)

	Cable/Antenna Analyzer (Site not responding. Last check: 2007-11-03)
		Five models have been added to the SiteMaster line of cable and antenna analyzers.
		The enhanced test instrument also incorporates a multilingual user interface that allows on-screen menus and messages to be displayed in Chinese, Japanese, Spanish, French, English, and German.
		The analyzers can monitor wireless systems working up to 20 GHz, sport a 640 x 480 pixel display, provide 517 data points, and operate from a 12.5-VDC source.
	www.commsdesign.com /printableArticle?articleID=16503822 (94 words)

	EE Product Briefing - Analyzer Measures Signals to -115 dBm
		The hand-held MS2711B Spectrum Analyzer offers two key options: a preamplifier and a tracking generator.
		A new feature, dynamic attenuation, tracks the input signal level and automatically adjusts the reference level to protect the MS2711B in situations of high RF signal levels or activates the preamplifier when a low-level RF signal is present.
		The spectrum analyzer also has a multilingual user interface with on-screen menus and messages in six different languages and a 75-W interface.
	www.evaluationengineering.com /products/080204.htm (185 words)

	Micro908 Project Page
		Calibrating the Antenna Analyst -- You'll need to calibrate the AA908 after first asembling the kit, and sometimes when software updates are made, and always when the DDS signal has changed.
		Several years ago, N2APB and N2CX embarked on a journey to develop a low-cost antenna analyzer that would sweep the ham bands with a micro power transmitter and measure the resultant SWR of an antenna system.
		We presented the original design of the Analyzer at various QRP forums circa 1998-2000 and evolved the hardware platform several more times in the Digital QRP Homebrewing column of QQ magazine (proto 2 and proto 3).
	www.amqrp.org /kits/micro908 (2201 words)

	Antenna analyzer and non-resonant antenna
		I have built an antenna analyzer (AA-908) that reports SWR, complex
		way to estimate antenna impedance that is beyond the range of your meter.
		It is necessary to know the impedance, not just the VSWR on the 50 ohm line.
	www.radio-forum.com /antenna/Antenna_analyzer_and_nonresonant_antenna_205929.html (625 words)

	IWCE New Product Showcase (Site not responding. Last check: 2007-11-03)
		A low cost, lightweight, handheld, battery-operated package, the Cell Master combines the functionality of a cable and antenna analyzer, spectrum analyzer, power meter, transmitter analyzer (CDMA and GSM), transmission analyzer for 2-port devices, interference analyzer, GPS and a T1/E1 analyzer.
		Site Master™ S820D Handheld Broadband Cable and Antenna Analyzer from Anritsu provides the widest frequency bandwidth of any handheld instrument, allowing for precise detection of faults in cables and antennas used in wireless backhaul and defense applications.
		The antenna that revolutionized the industry makes a striking visual impact by enclosing the superior Phantom technology in a significantly more aerodynamic housing.
	iwceexpo.com /exhibitors/nps (1323 words)

	Mailgate: sci.techniques.mag-resonance: Bird Antenna Analyzer (Site not responding. Last check: 2007-11-03)
		I am curious to find out if anyone has used the Bird Electronics (www.bird-electronic.com) AT series of antenna analyzers to tune NMR probes.
		We have an Bruker AC-300 with a dual H1-C13 probe which is awkward to tune with the old style pre-amp and reflection bridge.
		I know that the AEA 121 antenna analyzer has been used as a low cost substitute.
	mailgate.supereva.it /sci/sci.techniques.mag-resonance/msg00021.html (89 words)

	Dan Romanchik's Blurty -- Day (Site not responding. Last check: 2007-11-03)
		It may not be quite as accurate and the LCR meter, but my guess is that it's plenty accurate for amateur use.
		I first measured the reactance of a coil that I've had around the shack for ages (at one time, I used it as a loading coil coil for a vertical antenna).
		It just so happens that antennas are perfect specimens for the type of analysis that the VA1 is capable of performing.
	www.blurty.com /~kb6nu/day/2004/02/25 (353 words)

	naptech.com; Power Supplies, Oscilloscopes, Oscilloscope, Test Equipment, Used Test Equipment, Rf Signal Generator, ... (Site not responding. Last check: 2007-11-03)
		ANR S331B, Cable Antenna Analyzer, 25-3300 MHz, perfect for transmission line/antenna installation and maintenance, accurate return loss/SWR measurements.
		HPC 3709B, Consellation Analyzer, to characterize performance of digital radios in service and out of service by analysis of constellation patterns.
		HPC 8981B, Vector Modulation Analyzer, 350 MHz I vs. Q bandwidth, 50 MHz to 200 MHz I/Q demodulator.
	www.naptech.com /results.asp?FT=CA&CAT=500 (1899 words)

	Hi-Q-Antennas for HF Ham Radio Mobile Operation KEYWORDS: W6HIQ, HA5CMG, VE7BOC, HF mobile antennas, mobile antenna, ... (Site not responding. Last check: 2007-11-03)
		To be able to efficiently utilize the 6 meter band on any Hi-Q Antenna, one MUST utilize an antenna analyzer, find the 5/8, 3/4 or even the MULTIPLE wavelength resonant point.
		This is due to the fact that the total antenna height exceeds 1/4 wavelength.
		Some hams have found it advantageous to dedicated a small 6 meter antenna, in addition to their Hi-Q Antenna.
	www.hiqantennas.com /sixmeters.htm (101 words)

	WWW.PART15.US - YOUR PART 15 RADIO STATION INFORMATION SITE - 5/8 wave antenna schematic likely wrong! (Site not responding. Last check: 2007-11-03)
		I used an adjustable 6 meter fiberglass antenna for the vertical and set it to 80 inches for resonance on 87.9 MHz.
		I will paint the whip dark gray and use it for a stealth antenna as I'm not supposed to have outside antennas.
		I'm not sure this will hold true at FM BCB, but if I can't get a 5/8 to match with an antenna analyzer, there is not much hope for the average hobbyist.
	www.part15.us /modules.php?name=News&file=print&sid=28 (395 words)

	TAPR Vector Network Analyzer
		The TAPR Vector Network Analyzer is a low-cost Vector Network Analyzer (VNA) that operates from 200 kHz to 100 MHz, and connects to a personal computer using a USB 1.1 interface.
		The VNA is used to measure and adjust filters, coaxial cables, amplifiers, antenna input impedance vs. frequency, just to name a few.
		The July/August 2004 QEX article discusses the design of the measurement hardware, control processor software on the instrument itself, and the software on a personal computer that controls and displays the measurements.
	www.tapr.org /kits_vna.html (400 words)

	BR-200 (Site not responding. Last check: 2007-11-03)
		BR-200 Antenna Analyzer The Kuranishi Instruments BR-200 1.8-170MHz SWR and impedance analyzer is now available.
		When accurate test results are of primary importance, the BR-200 Standing Wave Analyzer is a laboratory grade precision tool which measures Standing Wave Ratio (SWR), impedance, and which may be used for determining the resonant frequency of an antenna system.
		The BR-200 directly measures antenna properties without the need for a separate transmitter, SWR bridge or other equipment.
	www.wb0w.com /comet/br200.htm (143 words)

	Site Master™ Cable and Antenna Analyzer - Anritsu
		Site Master S331D covering the 25 MHz to 4000 MHz are designed to accurately locate and identify RF cable feed-line and antenna system faults.
		These models are ideally suited for any experience level user in installing, commissioning, troubleshooting and maintaining today's wireless systems infrastructures including VHF, broadcasting, paging, cellular, PCS/GSM, 3G, ISM, WLAN and WLL applications.
		Saves up to 25 Measurement Test Set-Ups - S331D (Cable and Antenna Analyzer: 10, Power Meter: 5, T1 Analyzer: 5, and E1 Analyzer: 5).
	www.us.anritsu.com /products/ARO/North/Eng/showProd.aspx?lc%20=Eng&cc=US&rc=ARO&ID=595&cat=1&cat2=2&cat3=24&cat4=0 (459 words)

	UHF Antenna/SWR Analyzer w/ Meter
		The MFJ-219 Antenna SWR Analyzer covers 420 to 450 MHz.
		You can use the MFJ-219 Antenna SWR Analyzer to adjust dipoles, verticals, yagis, quads and other antennas and determine their SWR, resonant frequency, and bandwidth.
		All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc.
	www.mfjenterprises.com /products.php?prodid=MFJ-219B (208 words)

	Question, charging batteries, MFJ-269 antenna analyzer (Site not responding. Last check: 2007-11-03)
		analyzer say an external source of "at least" 13 volts is needed --
		> analyzer say an external source of "at least" 13 volts is needed --
		I think the wall wart I have is going to work okay, the
	www.radio-forum.com /antenna/Question_charging_batteries_MFJ269_antenna_analyzer_193597.html (1449 words)

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