RF calculator & Smith Chart vs Querymason

RF Calculator & Smith Chart is an all-in-one RF engineering toolkit for impedance matching, RF network analysis, antenna calculations, filters, attenuators and wireless system design. Built for RF engineers, electronics engineers, students, technicians and radio enthusiasts, it brings essential RF calculations and design tools together in one convenient app. Analyze impedance, work with Smith Charts, calculate VSWR and S11, design matching networks, estimate path loss, build RF attenuators and evaluate wireless links without jumping between multiple tools. RF & IMPEDANCE TOOLS • Smith Chart for impedance visualization and matching • S11 and reflection analysis • Reflection coefficient calculator • VSWR calculator • Impedance and transmission-line calculations • Cascaded RF network calculations IMPEDANCE MATCHING Design and analyze common RF matching networks: • L matching networks • Pi (π) matching networks • T matching networks • Stub tuner calculations Useful for antenna matching, RF amplifiers, transmission lines and other impedance-matching applications. RF FILTER DESIGN Calculate and design common passive and RF filters: • RC filters • RL filters • RLC networks • Butterworth LC low-pass filters • Chebyshev LC low-pass filters • Filter designs up to 8th order • Microstrip band-pass filters • Microstrip band-reject / notch filters RLC CIRCUITS Analyze frequency-dependent RLC networks: • Series RLC circuits • Parallel RLC circuits • Resonant frequency calculations • Frequency behavior and reactance RF ATTENUATOR DESIGN Quickly calculate standard RF attenuator networks: • Pi (π) attenuator • T attenuator • Bridged-T attenuator Ideal for RF signal-level control, impedance-matched pads and test setups. ANTENNA & PROPAGATION TOOLS Plan and evaluate RF and wireless systems with: • Antenna design utilities • Free-space path loss calculations • Friis transmission calculations • RF link budget calculator • Power density calculator • Radar maximum-range calculator COMPONENT DESIGN & REFERENCE Useful electronics tools are also included for RF design and prototyping: • Air-core inductor design • Spiral inductor design • Multi-layer air-core inductor calculations • SMD resistor code • Resistor color code • Resistors in series and parallel • SMD capacitor code • Capacitors in series and parallel BUILT FOR PRACTICAL RF WORK RF Calculator & Smith Chart is designed for quick engineering workflows. Select a tool, enter your parameters and get the values you need without working through repetitive equations manually. Use it for: • RF circuit design • Impedance matching • Antenna projects • Wireless link planning • Filter design • RF testing and troubleshooting • Electronics laboratories • Engineering study and coursework • Amateur radio and RF experimentation Whether you're checking VSWR, designing an impedance-matching network, calculating a link budget or experimenting with RF filters, RF Calculator & Smith Chart keeps essential RF engineering tools within easy reach.

Querymason is the SPL query builder for Splunk professionals who need to work fast. Whether you're in the middle of an incident response, running threat hunts, or just tired of rewriting the same queries from scratch — Querymason puts every search pattern one tap away. BUILD QUERIES INSTANTLY Choose a data source, select a query type, fill in your parameters, and get a complete, production-ready SPL query — syntax-highlighted and ready to paste into Splunk. 20+ DATA SOURCE PROFILES • Network: Router and switch syslog, network access control, next-generation firewalls, SolarWinds, Generic Firewall • Server: Linux Syslog, Windows WEC, Windows Sysmon, CrowdStrike • Data Center: VMware ESXi, VMware vCenter, NetApp, Pure Storage • Applications: Apache HTTP, Microsoft IIS, Nginx, Okta, Microsoft 365 QUERY LIBRARY 40 pre-built, production-tested SPL templates covering the most common SOC and IT operations use cases. Browse, filter, and copy in one tap. The free SOC Starter pack adds 12 more, ready to install from Packs. SHARE WITH YOUR TEAM Export your custom templates to share with teammates and import theirs. Templates you already have are skipped. QUERY HISTORY & PRESETS Never rewrite the same query twice. Querymason keeps your last 75 searches and lets you save unlimited named presets for one-tap recall. SPL ADVISOR A built-in advisor reviews your query and suggests performance improvements and command explanations. It works offline, and nothing leaves your device. PRO — ONE-TIME PURCHASE Everything above is free. One optional in-app purchase unlocks Pro: • Learning mode: an Explain switch on the query result walks through each pipe of your query in plain language, with short practice questions to test yourself • Sector packs built into the app: Threat Hunting (25 queries), Cloud Audit (18) and IT Ops Health (15) • Future Pro features at no extra cost Pay once. No subscription, no account. Restore Purchase is in the Pro screen. DESIGNED FOR THE FIELD A distraction-free dark interface built for long shifts. Syntax highlighting, copy-to-clipboard, and a clean 4-step wizard mean fewer mistakes under pressure. PRIVACY FIRST Querymason works entirely on-device. No telemetry, no accounts, no network calls. Purchases are handled entirely by Apple. Your queries never leave your device. Querymason is an independent product. It is not affiliated with, endorsed by or sponsored by Splunk Inc. Splunk® is a registered trademark of Splunk Inc.