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100W Power Amplifier Companion for the Hermes-Lite 2.x

This project is a 100W power amplifier companion board for the Hermes-Lite 2.x using the NXP MRF101 MOSFET. The amplifier circuitry is based on Jim WA2EUJ's Single NXP MRF-101 Eval Board that won 1st place in the NXP Design Challenge. The companion board features low pass filters for the 160, 80, 60, 40/30, 20/17 and 15-10 meter bands that are again based on Jim's and James N2ADR's work. It also features a SWR bridge for forward and reverse power measurements, temperature monitoring of the MOSFET's heat sink and fan control. Connectors and filters for Pure Signal are provided, but have not been tested yet.

First revision 0.2 boards were successfully built. Several changes and additions were done by Matthew M5EVT and are incorporated into revision 0.3. Boards of that revision are currently being built and tested.

If you have built one of the power amplifier companion board and made pictures of the process or the finished product, please get in touch with me to have them included in this wiki!