MacMININEC: An implementation of the MININEC algorithm for the Macintosh.
⌐ 1991 Chris Smolinski
This program is shareware. If you find it useful, please consider sending me $15.
If you do, I'll send you a disk with the latest version. (including the 68020/68881 version which runs much faster)
Chris Smolinski
40 South Lake Way
Reisterstown, MD 21136
Note: Please make sure that you have the appropriate version of MacMININEC for your Macintosh. Those with the Plus, SE, or any Mac without a math coprocessor, must use the 68000 version. Those with an SE/30 or Mac II should use the 68020 version, which runs much faster.
MacMININEC requires a Mac with at least one megabyte of RAM, and System 6 or greater. It does work with System 7.
The current version of MacMININEC, as of 1 June 1991, is 4.0.
MacMININEC Sample Files:
Dipole:
A simple half wave dipole, cut for 7 MHz. Try varying the number of segments, and see how it affects the results. Be sure to move the excitation to the proper pulse! (center pulse for a dipole)
Multiband:
This example shows the use of loads. In this case, traps. The antenna is resonate on 15.040 MHz, since the traps effectively isolate the rest of the antenna. It is also resonate on 7.19 MHz, when using the full length. Note how the resonate frequency is lower than expected for an antenna of this length - the inductance of the traps increases the electrical length of the antenna and lowers the resonate frequency.
Yagi Uda:
This is an example of a four element Yagi Uda (one driven element, one reflector, two directors). Use the radiation pattern menu choices to see the pattern of this antenna. Try changing the lengths of elements, or their spacing, and see the effects on the pattern.
Just try playing with the program, testing out known antennas to get a feel for how things work.
