Uploaded Sat May 18 2024 17:29:11

A Feasible Full Sized 40 Meter Beam Text File 

Uploaded Sat May 18 2024 17:29:11

Antenna v1.0 BROAD-BAND ANTENNA DESIGN program for 1.8 Mhz and up Written in Basic by AA9OO 

Uploaded Sat May 18 2024 17:29:11

ANTDL6WU v1.0 YAGI DESIGN program for 50mhz & up based on the work of Gunter Hock, DL6WU. Also designs T-match, coax baluns, & provides sources of materials. By WA2TIF K1DPP, & W1JOT. Written in Basic 

Uploaded Sat May 18 2024 17:29:11

Miscellaneous Antenna information text files 

Uploaded Sat May 18 2024 17:29:11

ANTFO v2.0 YAGI ANTENNA DESIGN program for 144mhz & up based on the work of Steve Powlishen K1FO. Also designs baluns, and provides sources for materials Written in Basic by WA2TIF 

Uploaded Sat May 18 2024 17:29:11

For years, antenna manufacturers and consultants have known that antennas mounted off the side of towers exhibit radiation patterns which are affected by the tower structure acting as a complex passive reflector.  An "omnidirectional" antenna no longer creates an omnidirectional field In 1969, the engineers at The Antenna Specialists Company mounted a tower on a rotatable platform on their test range and measured side-mounted antenna patterns by rotating the entire tower.  As more and more patterns were measured at different spacings on towers with different face dimensions, it finally was concluded that reasonable accuracy could only be obtained by modelling an exact installation.  The many variables prevented interpolating results for an installation falling "between" two measured patterns The work done in the 1969-1970 period was archived for possible future reference As time progressed, computers integrated their way into all facets of business.  The need to provide more detailed systems information grew, and the ability of systems engineers to perform was greatly tested.  Fifteen years after the test range data was archived, the A/S Systems Engineering Department was tasked with the goal of writing software to predict these patterns.  The result is ANTPLOT a program which, when compared to the real data on file for over two decades, will provide pattern predictions with reasonable accuracy.  Since many other variables can affect the patterns, use of this data for system design is at your own risk 

Uploaded Sat May 18 2024 17:29:11

Ariel was written with two purposes in mind.  First was to provide a basic design program for high frequency (HF) antennas Second was an attempt by the author to gain some experience with Borland's Turbo Pascal v6.0  programming language Ariel will only design antennas below 30 MHz .  Inputs of "letters" when the program asks for numbers" will produce crashes.  Holding the  key down will scroll the display off the screen 

Uploaded Sat May 18 2024 17:29:11

Antenna system Analysis v1.1 for Windows 

Uploaded Sat May 18 2024 17:29:11

AZ_PROJ is a set of files that generates azimuthal equidistant projections of the earth from (almost, see bugs) any location, giving bearing and distance from your location to any other place on the surface of the earth AZ_PROJ uses Level 1 Postscript, unless you are using a color PostScript printer (which we assume are all Level 2), in which case some Level 2 instructions are used The files output on a Postscript device (printer, display or through Postscript interpreters like Ghostscript - see file ghost.doc for setup suggestions) and hence are computer independent. Ghostscript runs on many computers (MSDOS, unix producing output in X-windows (unix or DesqviewX), or under MSDOS with a 386 chip to a VGA display. Ghostscript produces native code for many printers, allowing many printers to function as a postscript printer The data to produce the coastlines, countries, states, rivers, lakes and islands comes from the public domain CIA World Data Bank 

Uploaded Sat May 18 2024 17:29:11

Coax Calculator for Windows.  This will help you determine what type of coax would be best to use.  Very good for comparing side by side.  Gives info on RG58, RG8, 1/2 and 3/8 inch hardline.  Covers frequencies from 3.5 to 420 Mhz.  Every ham must have this on his hard drive Rush Limbaugh fans Check out your bonus in README.TXT Requires VBrun300.dll 

Uploaded Sat May 18 2024 17:29:11

If you are not familiar with this type of antenna, don't feel bad.  It is not one of your more popular HF or even VHF radiators It is widely used as a base antenna for emergency services (police fire, ambulance).  It's primary claim to fame is it's very broadband performance.  A discone designed to cover 144 mhz can work equally well up through 1296 mhz.  Feedpoint impedance is 50 ohms unbalanced.  Ideal for 50 ohm coax or hardline.  It is vertically polarized, omnidirectional, and can best be compared to an extremely broadband ground plane antenna.  Not much good for UHF DXing, but it makes a dynamite scanner antenna 

Uploaded Sat May 18 2024 17:29:11

EAM (electromagnetic antenna modeling) demo for Windows 

Uploaded Sat May 18 2024 17:29:11

ELNEC is a powerful but easy-to-use program for modeling and analyzing antennas. A wide variety of antenna types and parasitic structures may be modeled The far-field pattern of an antenna, including gain, can be plotted on an ARRL-type (logarithmic-dB) or linear-dB polar plot, or presented in tabular form. All outputs, including plots, can be printed on a standard dot-matrix printer or HP LaserJet or DeskJet printer. A special ANALYZE feature tells you the forward gain, front-to-back or front-to-side ratio, beamwidth, angles of 3-dB pattern points, major sidelobe level, and front-to-sidelobe ratio. The points which ANALYZE finds can be included on the plot to verify that ANALYZE has measured what you thought it had. In addition, you can display or print the voltage, current, impedance, and SWR (for a 50- or 75-ohm system) at each excitation source, the voltage, current, impedance, and power loss of each load, and the current distribution on each wire. The antenna description may also be printed ELNEC offers an easy, menu-based system for describing and modifying the antenna. Unlike MININEC, ELNEC doesn't require a tedious and error-prone counting of "pulses" to determine where a source or load is placed. And once placed, the source or load stays where it belongs when the antenna is modified. (This feature is described in more detail in the REFERENCE chapter, p. 46.)  Many special features are included to make modifications fast and simple; for example, wires can be added, deleted, or tilted, or wire lengths or antenna height changed, with a few keystrokes Antenna descriptions and patterns are easily saved and recalled from disk files 

Uploaded Sat May 18 2024 17:29:11

ES-PROP version 1.4 November 1994 Sporadic-E Propagation Analysis Program.  A graphic sporadic-E analysis program that permits the analysis of Es MUF's and paths Based on Emil Pocock's "Sporadic-E Propagation at VHF: A Review of Progress and Prospects", QST April 1988 Version 1.4 corrects a problem in calculating MUF's.  Previous ver sions produced too high of a value By James M. Roop, K0BI 

Uploaded Sat May 18 2024 17:29:11

HAMFTZ v.03 beta by HB9HFN vom 07.02.1995 HAMFTZ, Ionospheric propagation predictions Distributed by Radio Amateur BBS  HB9EBW USR  V.34 +41-61-981 69 69 ISDN X.75 + V.110 +41-61-983 10 09 

Uploaded Sat May 18 2024 17:29:11

This windows program was written to simplify choosing helical antenna parameters.  Scrollbars are used to vary frequency, circumference, number of turns and turn spacing.  Antenna gain, impedence, beamwidth, size, etc. are displayed 

Uploaded Sat May 18 2024 17:29:11

Working EME or satellites? Calculate your circularly polarized antenna with this prog ram. Shareware from OH0NC 

Uploaded Sat May 18 2024 17:29:11

Routine to display the radiation patterns from NEC output files 

Uploaded Sat May 18 2024 17:29:11

J-pole Design Prg V1.1 by WA2ISE 

Uploaded Sat May 18 2024 17:29:11

This antenna can be rolled up into a coil and stored in your desk drawer or transported very easily in your pocket. And with the use of a common found rubber band or paper clip the "J" can be suspended anywhere. The "J" antenna has been stated to have approximently 3db of gain over a 1/4 wave ground plane. The advantages of this antenna can be plainly seen for emergency applications as well as other needs, ie. base, marine, and one of the best sneaky hidden "T"ransmitter antennas. Building this antenna is really quite easy items you'll need are 60" common TV twin lead coax RG-58U (multiples of odd 1/4 wave lengths 1  coax connector PL259 [BNC for HT use 

Uploaded Sat May 18 2024 17:29:11

The program LINELOSS is a versatile program capable of doing a variety of  calculations  related  to  power, VSWR, and transmission  line  losses 

Uploaded Sat May 18 2024 17:29:11

This program lets you design Yagi antennas with Log-Cell feeding for high gain, wide bandwidth and clean pattern. The author has used this type of antennas for many years Shareware from OH0NC 

Uploaded Sat May 18 2024 17:29:11

LPCAD20 is a program to design log-periodic ANTENNAS 

Uploaded Sat May 18 2024 17:29:11

Excel sheet to design Logperiodic Dipoles 

Uploaded Sat May 18 2024 17:29:11

Calculate mast dim. needed v1.0beta - KD4NUE 

Uploaded Sat May 18 2024 17:29:11

This program provides some general information on the design of small circular l
oops <small being for a circumference of less than 1/3 lambda>.  Construction is
 based on copper wire with a conductivity <σ> of 5.7E7 mhos/meter and air dielec
tric with a permeability <µ> of 4πE-7 henries/meter Output data includes far-fie
ld E and H values in table form Values for E and H are Volts/meter and Amps/mete
r, respectively Angles phi and theta are measured in degrees 

Uploaded Sat May 18 2024 17:29:11

EAM (electromagnetic antenna modeling) demo for Windows 

Uploaded Sat May 18 2024 17:29:11

NEC2 exe for DOS. Runs on 286 or better 

Uploaded Sat May 18 2024 17:29:11

Numerical Electromagnetic Code 2 32-bit version for PC complete with executables and source code. This file contains also the necessary dosextender dosxmsf.exe that was missing in NECFPC.ZIP 

Uploaded Sat May 18 2024 17:29:11

DOS util for verifying NEC models 

Uploaded Sat May 18 2024 17:29:11

The program outputs dimensions and other data for the rhombic you want.  At the end, this info is expressed in terms of x,y,z coordinates (in meters) for entering into an antenna analysis program like Elnec.  The metric system has been declared "legal" in the U.S. since about 1870, so maybe it's time to throw away this inches and feet business.  Get a tape measure that measures in meters.  We're almost in the 21st century Analysis with Elnec of the so-called 'vertical rhombic' (there are published articles advocating use of rhombics rotated 90 degrees, to the vertical, for vertical polarization) shows that it is useless.  The pattern is worse than a dipole, even if you place the antenna 100 meters above the ground.  I don't know if the authors of these articles ever actually used these antennas in a situation that would determine how effective they really are.  I recently found the "vertical half-rhombic" in a U.S. Army antenna manual, however; if anyone has practical experience to share, please do so, it would be much appreciated.  A vertical half-rhombic would be a very useful antenna to have and it would be easy to set up because it would be essentially a long wire in an inverted-V plus a ground counterpoise 

Uploaded Sat May 18 2024 17:29:11

Stack to control a Kenwood TS-940S 

Uploaded Sat May 18 2024 17:29:11

NEC2 pre-processor for DOS PC's 

Uploaded Sat May 18 2024 17:29:11

DIPOLE.EXE is a small simple dipole calculator for use with Windows.  It is written in Visual Basic 1.0 and requires VBRUN100.DLL to run 

Uploaded Sat May 18 2024 17:29:11

Rhombic Utility for Windows 

Uploaded Sat May 18 2024 17:29:11

YA101PAT.EXE patches the YA 1.00 Yagi analysis program that comes with the new 17th edition of the ARRL Antenna Book To do the patch, put YA101PAT.EXE in the same directory as YA.EXE and type YA101PAT YA 1.01 recomputes Yagi response in two situations YA 1.00 should but doesn't.  The first is when you tab to another matching network that uses a different driven-element length The second bug occurs when you bring up the Frequency Menu but don't change a frequency.  The next time Yagi response needs to be recalculated, YA 1.00 neglects to do it.  Finally, YA 1.01 lets you enter any non-tip taper length, even one that causes the overall element length to exceed allowed bounds.  YA always readjusts tip length to maintain the same electrical length 

Uploaded Sat May 18 2024 17:29:11

The YAGIMAX program represents my latest attempt at antenna modeling software. It is based upon the assumption that the antenna is monotapered. The algorithm used for YAGIMAX is not derived from MININEC as was the case with all versions of YAGINEC, but is based upon the sumption that correctly designed Yagi antennas have a sinusodial current distribution which is well behaved. For correct results this requires that the user input realistic dimensions when using YAGIMAX 

Uploaded Sat May 18 2024 17:29:11

YO.EXE is a Yagi-Uda antenna analysis and optimization program for IBM-PC and compatible computers.  YO will analyze a Yagi hundreds of times faster than general-purpose antenna modeling programs, such as MININEC or MN A fast Yagi model is implemented with high accuracy for forward gain and overall pattern, and good accuracy for F/B and input impedance.  The Yagi model used in YO is significantly more complex than the well-known W2PV Yagi model YO includes an algorithm for automatically optimizing the forward gain radiation pattern, and input impedance of a Yagi.  This algorithm simultaneously adjusts all element lengths and spacings to iteratively converge an antenna design to an optimal set of dimensions, using performance criteria and objectives which you specify The Yagi analysis algorithm used in YO employs a method-of-moments solution for element currents.  It includes correction factors to prevent convergence to supergain geometries, and to more closely match the YO-computed gain and pattern to those obtained with MN.  Compared with MN, the accurate arbitrary-geometry antenna modeling program based on MININEC, YO is typically within 0.1 dB for forward gain, within a few dB for F/B, and within a couple of ohms for input impedance.  Patterns produced by YO and MN for the same Yagi usually appear nearly identical.  Occasionally, F/B differences of 10 dB or more will occur for unusual Yagis which YO computes as having all backlobes more than 30 dB down The speed of the YO Yagi analysis algorithm permits several Yagi iterations per second to be performed for small Yagis (8 MHz XT with 8087 Using YO, a small beam can be completely optimized for gain, pattern, and SWR over a frequency band in just a few minutes.  For antennas having many elements, such as long-boom VHF Yagis, the optimizer may be run unattended with constraints to automatically find the best antenna -- while you sleep, if necessary.  Yagis having up to 50 elements can be modeled YO will analyze a Yagi at a spot-frequency or at the low, middle, and high frequencies of a band of interest.  It will update plots on your screen of the far-field radiation patterns at each frequency while it iterates the Yagi dimensions, and will continuously display the forward gain, F/B, input impedance, and SWR.  This running graphics/alphanumeric display lets you interactively direct the optimization.  You may interrupt the optimization at any time to save the current design or to change optimization strategy 

Uploaded Sat May 18 2024 17:29:11

To analyse performance of Yagi-Uda antennas. You give the dimensions and positions of each element, and the program calculates gain, input impedance, front-to back ratio beam-patterns etc. An optimisation program 'optimise' tries to optimise a design. The optimiser can also tell you the sensitivity of a good design, to small mechanical errors 

Uploaded Sat May 18 2024 17:29:11

This program is a ray-tracing program to evaluate the effect of foreground terrain on the elevation pattern of up to four Yagis in a stack. The effect of the horizontal Fresnel ground reflection coefficients is also modeled, meaning that the ground conductivity and ground dielectric constant are inputs to the program. YTAD only models horizontally polarized Yagis. The internal antenna model is a typical 4-element Yagi. The output is referenced however to an isotropic radiator in free space; that is, in dBi. The free-space gain assumed for the 4-element Yagi used inside YTAD is 8.5 dBi