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Has anyone got contact details for Steve Vekes, I have googled his name and searched the white pages but nothing came up..... Thanks, Mark

I have have found the manuafcturer of the Ohmega-Ply resistor material but they only supply it in 60 squre feet quantities. Does anyone know of any smaller amounts available anywhere? Say, a couple feet of 100 Ohm per square? Thank you

Hello Logbook, It is probably they way the resistive card is used. A strip of it is placed in the waveguide, secured at each end against one H wall and a pin or screw is used to bow the vane in to the path of the microwave RF, thus attenuating the signal.

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...

1. Yes, the heatsink is on the outside of the waveguide. 2. Is natural convection cooled 3. Say about 60 degC I was thinking of using a set of individual fins mounted in the same plane as a flange would be, about 100mm by 100mm by 2mm, spaced along the guide at regular intervals. The finished...

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