Portable Rig with Directional Aerial

The rig's controls are:
tuning, on/off switch, headphone socket, volume

Internal view of the unit

The main PCB showing how widely spaced the components are

In the prototype unit, the aerial was built on a separate board. This was formed by cutting down the main board. However, later experiments showed that the board can be left intact. There is enough space in the box for a complete 100mm by 160mm board.

The control board. The tuning capacitor should be mounted on a piece of copper clad board in order to reduce stray and hand capacitance effects when fox hunting

Full details are given on the following pages:

• Circuit description and explanation
• Construction details for the main unit
• Aligning the unit
• How to create a directional aerial
• Component list

Please note: These pages have been updated to correct errors in earlier versions. This is version 2.
Details of the errors can be found here.

Other page links:

Back to the main project page
Back to the main GARES page