I recently worked on a PA0FRI Active Antenna design with fast BFR93A transistors.

Design

3D render:

PA0FRI Active Antenna 2026 Render

Schematic:

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Simulation Results

PA0FRI Active Antenna 2026 Sim 1

PA0FRI Active Antenna 2026 Sim 2

PA0FRI Active Antenna 2026 Sim 3

We will check its on-air performance soon!