The CDG2000 TX Low Pass Filter

This is one of the simpler boards. It is a conventional switched low pass filter followed by a directional coupler for VSWR detection. There are 6 filters, switched by relays.

The following links provide constructional data, performance information, schematics and PCB layouts.

 Note – the PCB and schematic were updated May 2003 to correct relay reversal problem.

Description	PCB component placement
Schematic	PCB tracking	Directional Coupler Performance
PCB tracking reversed

  This is an updated PCB and schematic – for the previous versions go HERE

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