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  1. microwavemark

    Resistive Card Supplier / Waveguide Bow Vane Attenuator design

    I am looking for a supplier for resistive card used in a Waveguide Bow Vane attenuator. I am not sure even what the material is called! All I know is that the resistance is measured in Ohms per square... Basically I am trying to come up with a simple design for a variable attenuator, so any...
  2. microwavemark

    Calculating number of cooling fins on a waveguide load

    I need some help in ways of calculating the number and size of fins required to disperse heat generated by a load element inside a piece of wave guide. The load element is silicon carbide absorbing 200W of power in copper or aluminium WR75 waveguide. Any pointers would be very much appreciated

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