RF vs TavKey

This tool works as an equation solver : you can choose the parameter (variable) to be computed, and fix the other parameters. It also supports multiple systems of units : American (US) and metric (SI). 1) Quarter Wave Antenna : you can compute the length of a quarter wave antenna or solve other parameters (frequency or wave length). 2) Path Loss in Free Space : you can compute the path loss in free space or solve other parameters (frequency, wave length, or distance). 3) VSWR & S11 : you can compute the voltage standing wave ratio or solve other parameters (modulus of reflection coefficient (linear or logarithmic), argument of reflection coefficient, real part of input impedance, imaginary part of input impedance). 4) Power Converter : you can convert the power between [dBm] or [W] units, and compute the tension [dBuV] (into 50 [ohms]). 5) Reflected & Delivered Power : you can compute the ratio of the delivered power to input power or solve other parameters (ratio of reflected power to input power, modulus of reflection coefficient, voltage standing wave ratio). 6) Microstrip Transmission Line : you can compute the characteristic impedance of a microstrip transmission line, or solve other parameters (relative permittivity, track’s thickness, distance from the track to the ground plane, or track’s width). 7) Stripline Transmission Line : you can compute the characteristic impedance of a stripline transmission line, or solve other parameters (relative permittivity, track’s thickness, distance from the track to one reference plane, or track’s width). Some remarks : -The microstrip solver is based on the IPC-D-317A design guidelines. -The stripline solver is based on the IPC-D-317A design guidelines.

TavKey helps trusted family members check whether they are seeing the same shared signal during suspicious calls. Scammers can pretend to be someone you know. TavKey gives your trusted group a simple shared signal that changes over time. When a call feels unusual - for example, someone asks for money, a password, or an urgent favor - you can ask for the current TavKey signal. If the other person has been added to your trusted group, they can open TavKey and see the same signal. How it works Create a trusted group, then add members while you are physically together. Once paired, each phone shows the same rotating signal. Designed for simplicity TavKey is built to be calm, clear, and easy to use. No accounts, no social feed, no complicated setup. Privacy first TavKey is designed to avoid collecting personal information such as family names or contact lists. Use TavKey when a call feels off If someone claims to be a family member and asks for something sensitive, ask them for the current TavKey signal before you continue. TavKey does not detect, block, or report scams. It is a verification aid. Always use your own judgment and never share passwords or any sensitive information if you are unsure it's safe.