A transmitter station building in Devon, Britain. A transmitter station or transmission facility is an installation used for transmitting radio frequency signals for wireless communication, broadcasting, microwave link, mobile telephone or other purposes.or lower frequencies a location with good ground conductivity is required. In case of microwave link chains, stations should be in observable ranges of each other. (see Earth bulge) Computer programmes for the terrain profile and abacs are used in addition to on site observations.
PDF FILE-CLICK HERE FOR PRINTABLE WORKSHEET. A knurling tool is used to press a pattern onto a round section. The pattern is normally used as a grip for a handle.Apprentice engineers often manufacture screwdrivers. These have patterned handles, to provide a grip and this achieved through the technique called knurling.. Ryan 2003 - 2009. PDF FILE-CLICK HERE FOR PRINTABLE WORKSHEET. A knurling tool is used to press a pattern onto a round section. The pattern is normally used as a grip for a handle. Apprentice engineers often manufacture screwdrivers.
The operation is performed for producing indentations on a part of a workpiece. Knurling allows hands or fingers to get a better grip on the knurled object than would be provided by the originally smooth metal surface.Occasionally, the knurled pattern is a series of straight ridges or a helix of straight ridges rather than the more-usual criss-cross pattern.lose-up shot of a diamond-pattern knurling on a cylindrical work piece. Knurling method: left/right with tips raised, spiral angle: 30Â°, pitch: 1 mm, profile angle: 90Â°.