Programs
"COAX_Z" - A DOS program, written in “C”, that takes you through the measurement of the Characteristic Impedance (Zo) of a piece of coax. Based on the Equations in the ARRL Antenna Book, this program produces the Ro, Xo, Velocity Factor and other useful data about the line. Can be installed and executed from anywhere on your hard drive.
"LSECT" - A program that designs L matching sections to transform an antenna impedance to a specified value, such as 50 ohms. This program requires VBDRT10.EXE run time module, also available below. This program was written in Visual Basic for DOS. Can be installed and executed from anywhere on your hard drive.
"NCS" - A Windows Net Control Program, written in Visual Basic 3.0. Complete with Windows Help file. After unzipping the file, run the setup.exe program to do a Windows installation.
"NEWWAV7" - Similar in functionality to SWAVE, but in a more compact program for DOS. Accepts reactance component of line impedance and allows negative line lengths. It also writes the results to a disk file for future reference or printing out. Can be installed and executed from anywhere on your hard drive.
"SWR" - Calculates the Standing Wave Ratio based on power readings. Can be installed and executed from anywhere on your hard drive.
"QuikText" - A program that stores your favorite text expressions and allows you to insert them in other documents with hotkeys. After unzipping, execute the Setup.exe for a Windows installation, including a Help file.
"RFBR1" - A program that computes impedances from measurements made with a General Radio Model 1606 or similar RF Bridge. Dial readings and frequency are input and the impedance is calculated. The special feature of this program is that it performs the necessary calculations to convert from a three -measurement sequence to compute the impedance of a balanced load being measured by an unbalanced bridge. This program requires the VBDRT10.EXE run time module. Can be installed and executed from anywhere on your hard drive.
"SMCHR” - version 8.2 of SMITH CHART PROGRAM. Written in Visual C++ 1.5. Runs in Windows 3.1 and later. Zip file includes an extensive Help file. Can be installed and executed from anywhere on your hard drive.
“SMARTSMITH” – a new concept in Smith Charts. This program is “smart” in that it helps you design the correct matching section for a given antenna impedance. Approximately 2.5 MB zipped file, which includes the Plotting Package (NetworkProcessor). A complete Windows installation kit with Help files. Click HERE for the auxiliary plotting package (NetworkProcessor300.zip) as a separate file.
"SWAVE" - A Windows program for Transmission Lines - written in Visual Basic 3.0 for Windows. Includes the reactive component of characteristic impedance and allows negative values of line length. Requires the VBRUN300.DLL run time module. Can be installed and executed from anywhere on your hard drive.
"TLE" - Transmission Line Equations for Windows. Written in Visual C++. This program provides the most comprehensive analysis of a transmission line available from this site. In this release, the possibility of non-zero reactance for Zo is introduced. If you are interested in the best of the programs available on this topic from this site - this is it. Can be installed and executed from anywhere on your hard drive. After unzipping the file, save the executable and the help file in the same folder, anywhere on your hard drive and create a desktop shortcut to the executable.
"VECTORS" - A program that does complex arithmetic. If you are challenged by vector arithmetic and want to avoid the cumbersome procedure for adding, subtracting, multiplying or dividing vectors or complex numbers then you will like this program. This program requires the VBDRT10.EXE run time module. Can be installed and executed from anywhere on your hard drive.
"XMSL” - Transmission Line
Program that calculates the points of maximum current on the line. Written in
Visual C++, this program will run in any Windows environment. Can be installed
and executed from anywhere on your hard drive.
Run Time Modules
The VBDRT10.EXE run time module that is needed for programs written in VB for DOS can be installed any one of 3 places on your system – in the same folder with the program it supports, anywhere in the path or in the Windows\System folder. The Windows\System folder is recommended as that is where all run time modules and DLL's normally reside. Similarly, the Visual Basic for Windows programs require VBRUN300.DLL or later and that file should always be installed in the Windows\System folder.
"VBDRT10" - The run time module required for all Visual Basic for DOS programs.
“VBRUN300.ZIP” – The Run Time Module for all programs written in Visual Basic 3.0 for Windows. This zipped up module should be unzipped and installed in the Windows\System folder.
“Resolution.zip” – Zipped up installation kit for program that tests your visual acuity.