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2. Waveguide flange - Wikipedia

   en.wikipedia.org/wiki/Waveguide_flange

   So for example UBR220 is a square plain cover flange for R220 waveguide (that is, for WG20, WR42), PDR84 is a rectangular gasket flange for R84 waveguide (WG15, WR112) and CAR70 is a round choke flange for R70 waveguide (WG14, WR137).

3. Waveguide (radio frequency) - Wikipedia

   en.wikipedia.org/wiki/Waveguide_(radio_frequency)

   In radio-frequency engineering and communications engineering, a waveguide is a hollow metal pipe used to carry radio waves. [1] This type of waveguide is used as a transmission line mostly at microwave frequencies, for such purposes as connecting microwave transmitters and receivers to their antennas, in equipment such as microwave ovens, radar sets, satellite communications, and microwave ...

4. Waveguide - Wikipedia

   en.wikipedia.org/wiki/Waveguide

   An example of a waveguide: A section of flexible waveguide used for RADAR that has a flange. Electric field Ex component of the TE31 mode inside an x-band hollow metal waveguide. A waveguide is a structure that guides waves by restricting the transmission of energy to one direction.

5. List of IEC standards - Wikipedia

   en.wikipedia.org/wiki/List_of_IEC_standards

   IEC 60261 Sealing test for pressurized waveguide tubing and assemblies; IEC 60263 Scales and sizes for plotting frequency characteristics and polar diagrams; IEC 60264 Packaging of winding wires; IEC 60268 Sound system equipment; IEC 60269 Low-voltage fuses; IEC 60270 High-voltage test techniques – Partial discharge measurements

6. Low-noise block downconverter - Wikipedia

   en.wikipedia.org/wiki/Low-noise_block_downconverter

   For example, to downconvert the incoming signals from Astra 1KR, which transmits in a frequency block of 10.70–11.70 GHz, to within a standard European receiver's IF tuning range of 950–2,150 MHz, a 9.75 GHz local oscillator frequency is used, producing a block of signals in the band 950–1,950 MHz.

7. French Mayotte cyclone's toll still unclear as authorities ...

   www.aol.com/news/france-rushes-supplies-mayotte...

   The situation is made more difficult by uncertainty around the exact size of Mayotte's population. While official statistics put it at 321,000, many believe it is much higher due to undocumented ...