Detriment WiFi Security vs Ham Engineering

Free WiFi scanner. No ads, no account, no subscription. Home networks collect phones, laptops, cameras, speakers, TVs, and smart devices. Detriment scans your local network and highlights detected devices, open services, and likely risks in plain English. FREE: SCAN, FIX, AND VERIFY Run your first scan immediately. See a confirmed-risk score, separate review items, detected devices, observed local services, and a prioritized action plan. Start a fix, follow plain-English steps, then rescan. Detriment only marks an action verified when later scan evidence supports it. DEVICE DETAILS INCLUDED Tap any detected device to see what Detriment observed: - Visible local services and what they mean - Manufacturer advisory history, clearly labelled as general guidance - Step-by-step fix instructions - Security tips from our database - Evidence-backed identity confidence and discovery clues - Local corrections for the device name, maker, and type - Trust and label devices you recognize MY HOME SECURITY PASSPORT Detriment keeps a private, durable inventory on your iPhone or iPad. See when a network device first and last appeared, how its identity was matched, which services changed, what actions remain, and whether a later scan verified your fix. Add owner and room labels without sending your household inventory to an account or cloud dashboard. ROUTER GUIDANCE THAT FITS When Detriment recognizes a supported router family, it shows a tailored starting point for TP-Link, Netgear, ASUS, eero, UniFi, Google/Nest, or Linksys. A safe generic guide remains available when the router cannot be identified. WHAT IT CHECKS - Detected devices on your WiFi, identified by name and manufacturer when available - Local services visible to other devices on the same WiFi - Cameras or devices with RTSP video streams visible on your network - Devices with insecure or high-risk local access visible - IoT devices with known manufacturer-level security notes - Mystery devices you may want to investigate STAY INFORMED - Optionally enable best-effort alerts after your first home scan - Home screen widget with confirmed risk and new device alerts - Scan history records confirmed-risk results over time - Home, Actions, and Devices tabs separate status, work, and inventory - See important new evidence and resolved findings separately - Review privacy-safe scan diagnostics, coverage, and iOS limitations PRIVACY FIRST - No account required - Full MAC addresses, local IPs, names, owner/room labels, observations, and fix history stay on your device - Device identity corrections stay on your iPhone or iPad - Intelligence lookups send only MAC prefixes and visible port numbers, not full device IDs - Diagnostic sharing is always an explicit action and contains counts and limitations only - No ads, no tracking - Free app, no subscription Only observed evidence adds risk points. Unidentified devices and unavailable WiFi details are shown separately, and no network scan can guarantee security.

Ham Engineering is the engineering bench for amateur radio — antenna and feedline maths, circuit design, propagation and a deep reference library, all completely offline. No account, no ads, no tracking, and not a single network call. ANTENNAS • Half-wave dipole with adjustable k (velocity) factor, quarter-wave and 5/8-wave verticals, ground-plane radials, end-fed half-wave, random wire, full-wave loop and a 3-element Yagi estimator • Matching: L-network, Pi-network, quarter-wave transformer, balun/unun ratios and stub matching • Antenna Lab — a live elevation radiation-pattern plot with directivity, realized gain, takeoff angle, beamwidth, front-to-back, mismatch loss, feedline loss and system gain, each explained • Grid Compass that rotates with your phone, showing beam bearing and distance from your grid to a target grid • Antenna gallery — every common type drawn as scalable vector art, with what it is, what it is for and what to watch out for FEEDLINES & RF • Coax loss by cable type, frequency and run length; velocity-factor electrical length • SWR from forward/reflected power, plus return loss and mismatch loss • Antenna A/B comparison and receiver noise-floor estimation • RF power conversions: dBm, watts, ERP and EIRP • Propagation: free-space path loss, radio horizon and Fresnel-zone clearance • NanoVNA and tinySA quick-start guides, and a coax + connector gallery CIRCUITS • Ohm's law, series/parallel resistance, voltage dividers, RC and RL time constants • Reactance, LC resonance, Q and bandwidth, stored energy • RC and LC filter cutoffs, a constant-k Pi/T filter designer, a bandpass/notch calculator and a Butterworth low-pass designer • Resistor, capacitor and inductor code decoders, an AWG wire table and a 555 timer calculator • A live RLC resonance lab and a 50-part component gallery REFERENCE & EXTRA • Filterable amateur band plan for ITU Regions 1, 2 and 3 • Unit converters including watts, dBm and microvolts • Comparison tables for coax, connectors, antennas and batteries • Tools-and-gear and rig-controls galleries — what every knob and button is called across manufacturers • Maidenhead grid tools and great-circle beam headings • 300+ searchable tips, 40+ formulas, a rich glossary and a constants reference • Curated external links to major retailers, brands and references BUILT FOR THE BENCH • Nearly 200 illustrations drawn as scalable vector art — nothing to download, everything sharp at any size • Works fully offline. The app makes no network calls at all • Export any panel or diagram as a theme-aware image to share or file • An (i) explanation on every panel — this is a tool and a guide, not a quiz • Light and dark themes, adjustable font size, weekly tips and in-app version history • Your callsign, grid and email stay on your device and are never transmitted PERFECT FOR • Licensed operators designing, building and tuning antennas • Anyone putting up a first dipole or vertical and wanting the numbers right • Homebrewers and kit builders working with filters, matching and components • SWLs and newcomers who want the reference material without the exam drill • Club elmers and anyone teaching antenna and RF fundamentals PRIVACY • Your callsign, grid and email are stored only on your device. • No account, no sign-up, no ads, no analytics SDKs, no advertising ID and no tracking of any kind. 73 de A41UX Yousuf AL Balushi — Unixeer, Oman