eNIFOG 对比 Amateur Radio Toolkit 的使用情况和统计数据
eNIFOG app is an electronic reference of the National Interoperability Field Operations Guide (NIFOG). The NIFOG is a technical reference for emergency communications planning and for radio technicians responsible for radios that will be used in disaster response. It includes rules and regulations for use of nationwide and other interoperability channels, tables of frequencies and standard channel names, and other reference material.
The eNIFOG app gives users easy access to NIFOG information, offering a content index with links for quick jumps to reference sections, tables, figures, or images. Navigation links allow users to jump directly to regional quick references as well as add customizable bookmarks called Favorites to develop their own personalized access to critical information for their territory. eNIFOG can be downloaded and then taken to the field as an offline reference, to be used without the need of a cellular or data connection.
eNIFOG is FirstNet® listed.
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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
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eNIFOG VS. 
Amateur Radio Toolkit一月 11, 2025