I’ve been building a 1kW RF Power Amplifier based on the designs by W6PQL, www.w6pql.com

Amplifier Pallet

Picture shows W6PQL Pallet resting on Heatsink

Stonecold Heatsink model sourced from TME

RAD-C26260/150
Heatsink:extruded;grilled;L:150
mm;W:262mm;H:60mm;aluminium
Mfr: STONECOLD

https://www.tme.eu/en/details/rad-c26260_150/radiators/stonecold/

Low Pass Filter

Control and Protection Circuitry

Enclosure Design

Amplifier Testing