Antenna, CW, Morse, DTMF tools

About this app

Antenna+ is the must-have toolkit for amateur radio operators and RF hobbyists. Whether you're designing a dipole, tuning a vertical, calculating feedline loss, or planning an HF/VHF/UHF deployment, Antenna+ gives you accurate formulas and instant results. Key features include antenna-length calculators (dipole, inverted Vee, quad, bazooka, and more), frequency-to-wavelength conversion, VSWR and ERP calculators, RF conversion helpers, horizon visibility and solar calculators for propagation planning, plus signal utilities such as DTMF decoding/keying and Morse/PSK31 tools. The interface is optimized for both iPhone and iPad comes with Retina-ready icons and an integrated manual, and is built with test targets included for reliability. Benefits: - Quickly design and size antennas for HF, VHF and UHF bands - Reduce trial-and-error deployment time with VSWR and ERP calculations - Plan best operating windows using built-in solar/dawn/dusk and horizon visibility tools - Decode DTMF tones and use the DTMF keyer for tone generation; includes microphone access for decoding - Find quick reference formulas and illustrated for field use Antenna Calculators • 5/8th Wave Vertical • Half-Wave Dipole • Dipole & Inverted Vee  • Ground Planes  • Quad (Cubical)  Visibility & ERP & EIRP Calculators • Horizontal Visibility • Pure ERP and EIRP • VSWR Loss Calculator • EIRP Calculator for Transmitter power, Gain, and Power Loss No network connectivity required.

bug fixes for morse code and added morse code database with q codes (local search)

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Aug 19, 2026 · 10:03 AM $0.99