RF ToolBox version 5.2.0 is available

[ChrisSmolinski]

This version adds a toroid inductor calculator, for many of the popular cores out there (Amidon, etc), and is available for Windows and macOS

More details: https://www.blackcatsystems.com/software/electronics-antenna-design-software.html
Download links: http://www.blackcatsystems.com/download/rftoolbox.html

RF Toolbox is an antenna design and electronics/electrical tool package. It takes you step by step through the design of the following types of antennas:

Dipole
Fat Dipole
Yagi
Long Yagi
J-Pole
Super J-Pole
Log Periodic
Loop Antenna (MW Box Loop Antenna)
Cubic Quad
Vertical 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, and full wave
Helical
It also performs the following calculations:

Transmission Line Calculator
Coil Design
LC Filter Design
Transmission Line Loss
L Matching Networks
Pi Matching Networks
Impedance Calculations
Wire Gauge and Resistance and Voltage Drop
Wire Inductance Calculations
dB Calculations
Resistor Series/Parallel Calculations
Resistor Color Code Calculations
Low and High Pass Butterworth and Chebyshev Filter Design
Thermal Noise Calculator
Pi Network Attenuator Calculator
Tee Network Attenuator Calculator
555 Timer Oscillator Calculator
RF Link Budget Calculator
Gamma Match Calculator
Skin Depth Calculator
Zener Diode Calculator
Parallel Line / Ladder line Calculator