callrx Rust Homebrew

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callrx looks up US amateur radio callsigns from your terminal. It pulls the license record from the FCC Universal Licensing System and prints it with color, clickable links and a clean table layout.

Install

On macOS or Linux with Homebrew:

brew install binarynoir/callrx/callrx

The Homebrew formula installs a prebuilt binary for your platform, so you don't need Rust. You can also download a binary for macOS (Apple Silicon or Intel), Linux (x86_64 or ARM64) or Windows from the Releases page, or build from source with cargo build --release.

Sign in

Every lookup needs a personal API key. The easiest way to get one is from callrx itself:

callrx auth login

This opens your browser to confirm a short code, then saves the key on your computer. Check it any time with callrx auth status, or remove it with callrx auth logout. For scripts and CI, set the CALLRX_API_KEY environment variable instead.

First lookup

callrx W1AW

Results are cached on your computer for 7 days, so looking up the same callsign again is instant.

Use

callrx [CALLSIGN]
callrx lookup <CALLSIGN> [OPTIONS]
callrx history <CALLSIGN> [--raw]
callrx auth <login|status|logout>
callrx completions <SHELL>

OPTIONS:
    --json       Output the raw JSON response
    --raw        Plain text output (no color, no formatting)
    --no-links   Disable clickable hyperlinks
    --no-cache   Skip the local cache and fetch fresh data
    --weather    Show current weather at the licensee's mailing address
    --neighbors  Show other active licensees near the same mailing address

Links are clickable in terminals that support OSC 8 hyperlinks, such as iTerm2, WezTerm, Windows Terminal and Kitty. callrx completions generates tab completion for bash, zsh, fish, elvish and PowerShell.

The README covers the local cache, lookup history, installing completions and the data source in detail.

callrx on GitHub · Homebrew tap