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2kW Directional Coupler for LDMOS Amlifiers
this is a special development for my LDMOS amp. It does not need any metal case because the PCB planes are designed for 50 ohms impedance which makes it easy to build. It works from 0,1 to 52 (70) MHz and more than 2kW. Schematics and other documents are available on http://www.dj0abr.de
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