DL1DRK HamTools
HamTools is a deliberately lightweight collection of small tools and simulations for amateur radio, radio technology, BOS radio, electronics and web projects.
The site runs without a CMS. Calculators and simulations are plain files and are listed through small central data arrays. That keeps the site fast, easy to maintain and independent from large systems.
The tools are practical helpers for everyday use: not a replacement for standards, data sheets or official documents, but quick support for calculating, checking, experimenting and learning.
No guarantee is given for any information. Especially for band plans, frequencies and power limits, always check the current official source when it matters.