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Distribution automation using distribution line carrier systems - Part 4- Data communication protocols - Section 1- Reference model of the communication system. Original standard UNE-EN 61334-4-1-1996 in PDF full version. Additional info + preview on request

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Distribution automation using distribution line carrier systems - Part 4- Data communication protocols - Section 32- Data link layer - Logical link control (LLC). Original standard UNE-EN 61334-4-32-1996 in PDF full version. Additional info + preview on request

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Filters using waveguide type dielectric resonators - Guide for use. Original standard UNE-EN 61337-2-2004 in PDF full version. Additional info + preview on request

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Waveguide type dielectric resonators - Generic specification. Original standard UNE-EN 61338-1-2005 in PDF full version. Additional info + preview on request

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Waveguide type dielectric resonators - General information and test conditions. Measurement method of conductivity at interface between conductor layer and dielectric substrate at microwave frequency. Original standard UNE-EN 61338-1-5-2015 in PDF full version. Additional info + preview on request

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Waveguide type dielectric resonators - Guidelines for oscillator and filter applications. Original standard UNE-EN 61338-2-2004 in PDF full version. Additional info + preview on request

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