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Recent content by No Fear

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    Coaxial cable antenna Simulator

    Dear flatulent: Of course the guy who wrote these article was very very optimistic but lets considering the following facts: 1º) The collinear array should have: a) Half wave dipoles b) spaced between a half wavelength end to end. 2º) Feed the elements in phase to a 0º elevation...
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    Coaxial cable antenna Simulator

    dienal Eznec, elnec, nec4win, necpro, necplus etc are nec/mininec routines based program and have some difficult to simulate LPDAs and corner wires such as cubical quads etc. They work fine with vertical, yagis, corner reflector antennas. But most of them do not simulate transmission lines...
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    Coaxial cable antenna Simulator

    antenna simulator Hi Lupin: Well I have some experience what you need. Coaxial lines I usually use for make RF dividers etc. If you need some help about that, please, let me know. Regards No Fear
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    Need help with designing a 300-400MHz antenna

    First I need to know if the 100MHz bandwidth is for VSWR( 2:1 or 3:1 ) or Gain -3dB from center Frequency. Next the kind of pattern, ominidirectional or directional. If directional, front/back ratio, gain etc. But I can estimate something: If the array you are looking for is directional, the...
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    Coaxial cable antenna Simulator

    nec coax simulation Hi Folks: I'm looking for a coaxial cable antenna simulator, that can be able to simulate collinear antennas made with coaxial cable such as RG58, RG213 etc. Softwares that can simulate transmisson lines stubs are also welcome. In URL below you will find the kind of...
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    rf circuit design - looking for pdf book

    As cross said RF Design by Chris Bowick is od book. I have one and i can advice u to buy one. Other good book this area is Introduction to Radio Frequency Desig by Wes Hayward. I also have one and it come with a floppy that contains some RF applications programs. Hope to help you Regards No Fear
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    Long waiting time when creating SuperNEC structure in Matlab

    Hi. I didn't use supernec yet, but all mininec and nec based progams are very slow when simulating complex strutures. Try reduce the number of segments and run it again. As jjantenna said probably is a Mathlab bug, and in fact can be !! I'll install today supernec2 and try to simulate a...
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    Looking for designs of Bow Tie antennas!

    Try here: https://www.orionmicro.com Regards No Fear
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    I am a beginner of RF! - some advice needed

    RF Design I advice you to buy a good RF design book such as: RF Circuit Design, by ChrisBowick. Other good book is RF Design by ARRL. But before read those books above, start with THE ARRL Handbook. There, you'll find an easy way to understand the RF misterious !! Good luck No Fear
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    Metal detector - schematics needed

    Hi Send a Private message to Simbox. He loves metal detectors, and I think he's the best person who can help you. Regards No Fear
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    Tube and solid state power amp software

    Well i thought very interesting this software 'case it uses the transcondutance, Cgp capacitance. I think the only problem is it doesn't use Cin and Cout to do the match impedance. But i liked it so much 'cause it uses also a grid current to calculate the vacuum tube plate impedance. Everybody...
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    [SOLVED] GOLD AND SILVER PLATEING

    liquid gold plating system msds Hi Simbox Here in Brazil I use a similar product called "PRATEX". It is based in silver iodete and the PCB application is done with either a piece of cotton or a soft brush. This product is very hard to find in local business and also very expensive. A 1L bottle...

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