# Field Kit: Ham Radio Calc

> Calm calculators for hams

Canonical page: [https://chrome-stats.com/d/id6782189462](https://chrome-stats.com/d/id6782189462)

## Overview

- **ID:** `id6782189462`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** JOSEPH PAUL RAYMOND
- **Category:** Utilities
- **Version:** 1.0.1
- **Last updated:** 2026-07-18
- **First published:** 2026-07-13
- **Size:** 3.12 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/field-kit-ham-radio-calc/id6782189462)
- **Privacy policy:** [https://kk7jpr.com/privacy](https://kk7jpr.com/privacy)

## Description

Field Kit is the calm ham-radio calculator. Most shack utilities are busy and cramped; Field Kit is the opposite — legible type, gentle colors, and every formula explained in plain language right next to the answer.

Fourteen calculators, each with the working formula, a "How it works" note, and real-world examples:

• Frequency ↔ Wavelength (with velocity factor)
• Antenna lengths — dipole, vertical, full-wave loop, 5⁄8-wave
• Ohm's Law & Power — solve any two for the rest
• Reactance & Resonance (LC)
• RMS ↔ Peak ↔ Peak-to-peak, and power into a load
• Combining resistors, capacitors, inductors
• Peak Envelope Power (PEP)
• Radio horizon / line-of-sight
• Decibels, dBm ↔ watts
• Link budget — does the path close?
• SWR, return loss & mismatch loss
• Coax loss for common feedlines
• Beam heading & distance between grid squares
• Battery run-time

Make it yours: a built-in Construction Kit reshapes the whole app — nine palettes (light and dark), accent colors, spacing, corner radius, and display options — and remembers your look. Every calculator has multiple solve-for modes and full unit pickers.

No accounts, no ads, no tracking — and no network at all. Field Kit runs entirely on your device, on or off the grid.

73 and good DX.

## Rankings

- #1,949,831 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6782189462)