circuit faire antenne or
PDF Multiband Vertical Loop Antenna 10 14 21 28 MHz
2019 9 26 Loop pre matching circuit C C ve2azx 15 ve2azx 16 View of the Loop Pre Matching Circuit Relay Coaxial Capacitor RG 58 Balun ve2azx 17 VIEW OF BALUN 4 Turns RG 8X on two oval ferrite cores #43 type Fair Rite # #43 mix ve2azx 18 BALUN Measurements ve2azx 19 Loop SWR curveswith 22.5 ft Ladder Line 51 ft RG 8 We have low SWR on 3
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Download from here
2011 12 3 Download from here to a Windows Desktop icon or collect programs in a common Windows folder of your chosen name There s no un zipping inconvenience Programs can be run immediately after download With other machine operating systems programs can be run under DOS Emulators To run a program click on its desktop icon.
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rf
2014 10 5 At the quarters or 1/4 90 degrees and 3/4 270 degrees wavelength the current is the highest and the radiation is greatest 1 quarter wavelength is the shortest antenna length that will radiate signal 3/4 and 1 1/4 and 1 3/4 and so on are also radiation points
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Build an Antique Style Crystal Radio 9 Steps with
Build an Antique Style Crystal Radio I have for some unknown reason always been interested in ancient technology mainly electronics and mechanical things and I have always wanted to make a true old fashioned style crystal radio A crystal radio or crystal set as it is sometimes cal
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W3DZZ trap for 7MHz Eng version
2020 10 11 A parallel resonant circuit with coil and capacitance acts as an insulator The 77.2 MHz resonance is a high impedance for 40 m and that creates an insulation between the traps The ends of the antenna has a negligible influence on 40 m.
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18 idées de Antennes
10 mai 2020Découvrez le tableau Antennes de Pierre Yves VITELLI sur Pinterest Voir plus d idées sur le thème antennes radioamateur antenne radioamateur.
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144 MHz pocket antenna
2000 8 24 The results were the following VSWR minimum at 143.800 and less than 1.5 from 141.800 to 146.500 Its weight is 159 grammes A theoretical quarter wawelenght at 145.000 MHz would be 517 mm As one can see the lenghts of the parts B and D are lesser so the velocity factor is less than 1.
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pa0nhc HF index
2021 10 10 1 The DC power towards the antenna unit 2 The DC tuning voltage towards the antenna unit 3 The received RF signal back towards the tuner unit Antenna unit housed in 60mm rain tube 12.5x100mm Ui=125 ferrite rod in 32mm PVC tube Tuner unit with build in power supply.
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PDF Liertille Illinois intermaticcom Ascend
2020 11 19 Réorienter ou déplacer l antenne de réception Augmentez la séparation entre l équipement et le récepteur Connectez l équipement dans une prise sur un circuit différent de celui auquel le récepteur est connecté Consultez le revendeur ou un technicien radio/TV pour de l aide.
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PDF November 14 2018 Steve Dick K1RF
2018 11 16 circuit a Zepp type coupling circuit or a high impedance ratio UNUN 49 1 or 64 1 It can be used on multiple bands With a 49 1 or 64 1 UNUN no tuning is required and no antenna tuner is required or perhaps a touch up tuner with up to 3 1 VSWR capability that
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W3EDP
2020 3 7 The original EDP antenna was an end end fed wire matched with a parallel LC circuit Fuchs Circuit and a counterpoise wire. The description 1 was in the QST 1936 or Fair Rite RG43 part number core The insulator at the feeding side of the W3EDP antenna Left is a non cunducting rope for mounting right is the antenna wire.
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88–108 MHz Baluns Chokes
2021 10 4 This circuit models the loss of a halfwave coaxial balun It uses a lossless transmission line with a characteristic impedance of 75Ω and a delay of 5.1 ns The T pad models the 0.083 dB loss of a 50″ length of RG 6 2 dB/100′ loss and 83 velocity factor assumed This circuit models the common mode voltage rejection 300Ω Halfwave PCB Balun
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Google Translate
Google s free service instantly translates words phrases and web pages between English and over 100 other languages.
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PDF The pa0rdt
2014 6 27 Circuit diagram of the pa0rdt Mini Whip© Construction The pa0rdt Mini Whip© uses commonly available materials A single sided printed circuit board is mounted inside a 10 cm long piece of 40 mm drain pipe white using end caps One of the end caps carries an insulated BNC connector onto which the PCB is soldered.
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60 idées de Diy antennes
28 mars 2019Découvrez le tableau Diy antennes de roska sur Pinterest Voir plus d idées sur le thème antennes electronique antenne tv.
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