RepeaterBook 與 Amateur Radio Toolkit 使用情況與統計

RepeaterBook Amateur Radio's most comprehensive, worldwide, FREE repeater directory. Powered by the popular community database of RepeaterBook.com Easily find repeaters across the world. • No network connection required. • Comprehensive search, selection and sorting. • Displays distance, heading and full repeater details. • Fast and flexible, to help you use repeaters. • Portrait or Landscape views for phone and tablets. • Easily submit updates/additions. Repeater List View Distance, bearing and details of the nearby repeaters. Current Locator/Grid/Lat Long/Town. Portrait or Landscape views for phone and tablets. Repeater Detail View Distance, bearing and details of the repeater. Portrait or Landscape views for phone and tablets. Submit an update if needed! Search No internet needed, fast and reliable. Results from your current or searched location. Results generated as you type. Search By • Town (Greater than 5k population) - portland • Town State - portland tn • USA ZIP Code - 90210 • Repeater Call - GB7SV • Repeater Frequency - 433.325 • Locator - Enter a 4 or 6 figure locator in search box and press search • Latitude Longitude - Enter Latitude Longitude (Locale specific decimal point) in search box and press search • Wildcard - * for "wildcard matches" *ford matches Bedford, Hertford Search Results • Selecting a town changes your location to show Repeaters near that town. • Selecting a repeater displays all the info on the repeater. Search History • 10 search examples are provided. • The last 10 searches are saved. Filter Distance Band Service Sort by Distance Frequency Band Tone Call Service Bearing Country Settings Location titles Locator (IO91VW) Lat Lon (52.6579 1.7160) Text (East) Short Text (E) Degrees (90°) Theme Light or Dark Distance Units (Miles or km) Menu App name version and build Current location and name Settings About Add repeater Feedback via Email Privacy Policy Supported Languages ca, cs_CZ da,de en, en_GB, en_US, en_AU, en_IE, en_ZA, en_NZ es, es_AR, es_CL fi, fr, fr_CA it_IT nb, no, nl pl, pt se, sv, sk RepeaterBook will always be free. 73 Garrett KD6KPC and Nicolas M1HOG Copyright 2011-2020 RepeaterBook.com & ZBM2.com

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Amateur Radio Toolkit

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