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Yaesu FT-847 70 MHz filter simulations and modifications

by Marc Vlemmings, PA1O

Marc has produced two documents, covering his analysis and simulation of the RX and TX band-pass filters, and the PA output and low-pass filter circuits.

His analysis highlights errors in some of the previously published component values, and suggests corrected values.
Marc's documents also include photographs of the PCB modifications, and his measurements of efficiency and reflection coefficient.

Marc's documents can be downloaded in Adobe PDF format:
Yaesu FT-847 70 MHz band-pass filter simulations
Yaesu FT-847 70 MHz PA output and filter simulations.

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