![]() ![]() The hard drive was easily replaced, but I wanted an operating system (OS) that wasn’t going to cost me hundreds of dollars, that would be more robust and would support my ham radio operation.Ī suggestion from a friend and a little time spent surfing the Web quickly led me to the Ubuntu Web site. Contrary to popular belief, there are several options available for PC operating systems.Īfter a string of never ending system bugs and finally a hard drive crash, I was finally prompted to look for an alternative operating system for my PC. ![]() If you have wanted to upgrade your PC to a new operating system, but haven’t wanted to pay the high cost for some commercial packages, then you might want to consider the world of open source software. This webpage also contains many sample and standard antenna downloads for experimentation.Bert Kolts, free operating system provides your PC with all of the usual features, including lots of ham radio applications. Programs for common antennas and some experimental, includes, dipoles, quad, Yagi, verticals, discone, jpole skyhoppers and parabolic antennasĪ freeware software package for Yagi design. Source code and windows executables are available to download. Freeware by VE3SQBĪntenna Scatterers Analysis Program, is a Free general purpose antenna analysis software program for numerical electromagnetic antenna design, modeling and analysis. Express dimensions in feet/inch and meters/cm. MININEC for Windows is antenna modeling tool for the novice, student and hobbyist.Ĭalculate eh antenna components dimension with this online formĪn on-line javascript calculator and quite a few pictures to show how to make a helix antenna.Īn efficient program to calculate dimensions of coax dipoles, or bazooka antennas considering velocity length of different coax cables. Program that produces antenna radiation patterns and graphs for SWR, forward gain, and F/B ratios Version PRO/2 V.6 and v.7 is free to use and donwload, while version PRO/4 requires a licence. QRA Locator to Latitude/Longitude, Radio Horizon calculator, Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations Download zip By G4VWLĮZNEC is an antenna modelling software based on NEC-2 for the amateur and professional. ![]() HamCalc is a free collection of calculators for radio amateurs include Antenna ERP calculations,Īttenuators, Audio Filter design, Coil Winding,ĭecibels, Great Circles map and calculator, HF Filters, HF Traps, Metric conversions OP Amps Design your vhf yagi antenna online, a JavaScript enhanced web page that implements the design of an antenna in the VHF, UHF by K7MEMĬubical quad antenna calculator in java script let you calculate elements size and spacing in inch and meters.Įnter the operating frequency and calculate dimensions of your jpole antennaĪntenna Analysis software with the user in mind.Ĥnec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler.Ĭan be interfaced to HFwin32 propagation prediction software. ![]()
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