RF Engineer Toolkit vs Ham Mixer Mobile

RF Engineer Toolkit is the calculator set RF engineers, tower and DAS technicians, PCB designers, and radio amateurs reach for every day. 45 calculators, every formula unit-tested against Pozar, Balanis, ICNIRP 2020, FCC OET-65, and manufacturer cable data — with live results, locale-aware input, and no ads. FIELD AND SITE • VSWR, return loss, reflection coefficient, and mismatch loss from any one value or a wattmeter reading. • Cable loss with manufacturer coefficients (LMR, RG, Heliax, 9913), SWR loss, and ERP. • Link budget with FSPL, cable losses, gains, sensitivity, and margin. • Antenna downtilt and coverage, radio horizon, Fresnel zone with earth bulge and clearance. • RF exposure against FCC and ICNIRP limits, with safe distance for public and occupational exposure. • Antenna separation and co-site isolation, including required spacing. • Dipole, helical, and parabolic dish design, near-field boundaries, and Doppler shift. DESIGN AND LAB • Smith chart with series and shunt elements, lines and stubs, exportable as an image. • Impedance matching networks (L, Pi, T) with Q and bandwidth. • Attenuators (Pi, Tee, bridged-T, L-pad) with E24 and E96 values and real achieved attenuation. • LC filter designer: Butterworth and Chebyshev, low-pass, high-pass, band-pass, and band-stop. • Receiver chain: cascaded gain, noise figure, IP3, noise floor, and SFDR. • Amplifier linearity: P1dB, IP3, back-off, IM3, and PAE. • Microstrip, stripline, coplanar, and differential-pair impedance with synthesis and substrate presets. • Coax impedance, cable delay and phase, quarter-wave transformers, and skin depth. • Power dividers and directional couplers, S-parameter conversion, and intermodulation products. • Rectangular and circular waveguides with WR tables, cutoff, and guide wavelength. EVERYDAY CALCULATORS • dBm, dBW, W, V, dBV, dBµV, dBu, and dBi/dBd conversion. • Wavelength, reactance, resonance, time constants, Ohm's law, dividers, series and parallel circuits. FREE AND PRO 16 calculators are free, and every Pro calculator can be previewed. RF Toolkit Pro unlocks: • All 45 RF calculators. • Searchable calculation history with saved inputs. • PDF exports of calculation result sheets. • Custom cable and substrate libraries. Choose the plan that works for you: • Yearly subscription with a 7-day free trial. • Monthly subscription. • One-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the current period ends. You can manage subscriptions in your Apple Account settings. PRIVACY No accounts. No analytics. No ads. No tracking. Your calculation history stays on your device. Privacy Policy: https://zhsystems.me/privacy-rf-engineer-toolkit-privacy-policy-terms-of-use/ Terms of Use: https://zhsystems.me/turms-rf-engineer-toolkit-terms-of-use/

HamMixer Mobile turns your iPhone into a full remote control for your ham radio station. Connect securely to HamMixer Server at your home QTH and operate your transceiver from anywhere in the world -- with real-time audio, full radio control, and near-zero latency. Designed by CT7BAC, a licensed ham operator, for ham operators. REMOTE RADIO CONTROL - Set frequency with a velocity-sensitive tuning wheel and haptic feedback - Switch bands (160m-6m) with one tap and automatic band memory recall - Change modes: LSB, USB, CW, AM, FM - Toggle DSP controls: NB, NR, ANF, Preamp, AGC, IF Filter - Adjust RF power, control the antenna tuner, exchange VFO A/B - Real-time S-meter with peak hold, TX power and SWR indicators - 7-segment frequency LCD with live band plan display REAL-TIME WATERFALL Full-screen landscape spectrum scope with drag-to-tune, frequency snapping, adjustable contrast, and edge cycling. Native Icom scope data streamed over the network. VOICE MEMORY & CW KEYER - 8 customizable voice memory buttons (M1-M8) for voice keyer playback. In CW mode, buttons switch to programmable CW macros. - Character-by-character text-to-morse keying with adjustable speed (6-48 WPM). The radio handles all timing -- immune to network latency. - Connect a CW paddle to the BLE accessory module for real iambic keying (Mode A/B) with low-latency local sidetone. The keyer runs on your phone -- network latency does not affect your timing. QSO LOGGING Tap the frequency display to open a dedicated log screen. Band, mode, and frequency auto-fill from live radio state. Scroll-wheel time pickers and RST selectors. Includes its own PTT button and CW entry so you can keep working the contact while logging. - Saves to portable ADIF 3.1.4 file (compatible with Log4OM, HRD, and others) - Optional automatic upload to QRZ.com Logbook MIC DSP Shape your TX audio before it hits the radio: - Mic gain (0-20 dB) - Compressor with adjustable ratio - Noise gate with envelope follower - 8-band parametric equalizer (80 Hz - 3.2 kHz) - Real-time mic level meter and test recording with playback - Monitor button for live loopback through headphones WEBSDR AUDIO MIXER Mix live WebSDR receiver audio with your radio audio directly on your phone: - Stereo output: radio on left, WebSDR on right (Android) - Independent volume and mute per channel with real-time level meters - Adjustable delay (0-1500ms) with one-tap GCC-PHAT audio synchronization - Automatic frequency and mode tracking — WebSDR follows your radio - Embedded WebSDR page view with pinch-to-zoom - Configurable WebSDR and KiwiSDR site list DX CLUSTER - Real-time spots - DXCC resolution - one-tap tune-and-log ENCRYPTED & RELIABLE - TLS 1.2+ encrypted control channel - AES-128-CTR encrypted audio stream with per-session keys - Opus codec at 48 kHz / 48 kbps for broadcast-quality radio audio - Automatic reconnection on network drops - Background audio keeps playing during phone calls and multitasking - Built-in network diagnostics: latency, jitter, and UDP connectivity tests ADDITIONAL FEATURES - PTT lock and VFO lock to prevent accidental transmission or tuning - Audio auto-mute during phone calls - Settings backup & restore - Multiple saved server profiles - Remote radio power off - BLE accessory module: wireless VFO encoder, PTT/TUNE buttons, and CW paddle jack (Raspberry Pi Pico W) - Keep screen on option SUPPORTED RADIOS - Icom transceivers with CI-V protocol: IC-705, IC-7100, IC-7300, IC-7610, IC-7760, IC-7851, IC-9700, and more. - Kenwood TS-590S/SG. - Automatic model detection. REQUIREMENTS HamMixer Server (Windows) must be running at your home station, connected to your radio via USB. The server is included in the HamMixer Full Bundle license ($39.80 one-time). The mobile app itself is free. Visit http://www.ct7bac.com for documentation, setup guides, and a 14-day free trial of the desktop suite.