ZL1BPU Rotator Controller
- A very simple controller circuit, with fairly smart performance!
The ZL1BPU Rotator Controller has been designed as an add-on unit for the popular Kenpro KR-400 and Yaesu G-400 rotators. The controller consists of a small circuit board which fits inside the rotator control box (see picture).
Patch antenna for APT
- The patch, or microstrip, antenna has become a common workhorse for the microwave spectrum from about 1 GHz to tens of GHz.
This type of antenna consists of two conducting layers separated by a dielectric to form an
extended capacitor by WlHDX