Amateur Radio Toolkit is the best app for ham radio hobbyists. It contains many calculators to help you design radios and antennas for all your projects. Tools: Coordinate calculator - Find your latitude and longitude by entering your maindenhead square. Grid square calculator - Find your maindenhead square by entering your latitude and longitude Distance calculator - Find the distance between two maidenhead squares Unit converter - Convert between units Location - Find your location Dipole antenna - Calculate the optimal lengths of a dipole antenna for a given frequency Vertical antenna - Calculate the optimal lengths of a vertical antenna for a given frequency Cubical quad antenna - Calculate the optimal lengths of a cubical quad antenna for a given frequency Inverted vee antenna - Calculate the optimal lengths of an inverted vee antenna for a given frequency Ground plane antenna - Calculate the optimal lengths of a ground plane antenna for a given frequency J pole antenna - Calculate the optimal lengths of a J pole antenna for a given frequency VSWR - Convert between VSWR, Refection coefficient, return loss and mismatch loss Three element Yagi antenna - Calculate the optimal lengths of a three element Yagi antenna for a given frequency Seven element Yagi antenna - Calculate the optimal lengths of a seven element Yagi antenna for a given frequency Wavelength frequency converter - Convert between wavelength and frequency Air core inductor - Calculate the inductance or lengths of an air core inductor Low pass filter - Calculate the units of an RC or RL LPF circuit High pass filter - Calculate the units of an RC or RL HPF circuit Ohm's law - Convert between voltage, current, resistance and power by entering two Reactance - Calculate the reactance of a capacitor or inductor Decibel calculator - Convert between decibel values or calculate dB by entering the power or voltage Voltage divider - Calculate the output voltage or resistance of one resistor Resistor Color codes - Find the resistance of a resistor by entering the colors of the bands Resistors in parallel - Calculate the resistance of resistors in parallel Resistors in series - Calculate the resistance of resistors in series Capacitors in parallel - Calculate the capacitance of capacitors in parallel Capacitors in series - Calculate the capacitance of capacitors in series Coaxial cable - Calculate the properties of a coaxial cable Inductors in series - Calculate the inductance of inductors in series Inductors in parallel - Calculate the inductance of inductors in parallel Full wave loop antenna - Calculate the optimal lengths of a full wave loop antenna for a given frequency ERP and EIRP - Calculate and convert ERP and EIRP Half wave coax balun - Calculate the optimal length of a half wave coax balun for a given frequency Small magnetic loop - Calculate the optimal lengths of a small magnetic loop for a given frequency Narrowband balun - Calculate the inductance and capacitance of a narrowband balun Pi attenuator - Calculate the values of the resistors by entering the attenuation and impedance T attenuator - Calculate the values of the resistors by entering the attenuation and impedance
Nice collection, needs refinement
I like the thought behind the assembly of tools, the collection is great enough for legit RF and work. The app could benefit from a UI and usability review to improve idiosyncrasies.
App repeatedly crashes
The app looked like it would be useful, and installing went smoothly enough. Once in the app, it looked like upgrading to pro would be useful. But every time I tapped the Upgrade to pro version, the app Crashes. Guessing the developer doesn't want my money?
Many functions simply do not work.
I was hoping to get a good model to build antennas. Unfortunately the model seems to be incomplete. Would be nice if it worked.
Works minimally…
Most buttons don’t work. Some calculations are off by up to 17%. Relatively worthless. Idea is good but it doesn’t work. Wasted my money.
Resistors in parallel
Does the app do anything do anything? I can’t get it to do anything.
Colors
Background colors non adjustable no functional control?
Needs improvement
Just downloaded it. There are no formal instructions on how to use it. For a beginner, you have no idea where or how to begin.
bug fixes
Name
Price
Subscribe our newsletter and get useful information every week.