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Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1] – defined as "A transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the ...
Radar targets within approximately 3 nautical miles (3.5 mi; 5.6 km) of each other. Guns An air-to-air or air-to-surface gunshot. H Hard (direction) High-G, energy-sustaining turn. Head/head on (USAF) Target with an aspect of 160 to 180 degrees. (Naval) Target with an aspect of 0 to 20 degrees. Heads up Alert of an activity of interest. Heavy
VHF Data Link. The VHF Data Link or VHF Digital Link ( VDL) is a means of sending information between aircraft and ground stations (and in the case of VDL Mode 4, other aircraft). Aeronautical VHF data links use the band 117.975–137 MHz assigned by the International Telecommunication Union to Aeronautical mobile (R) service.
History of PDF. The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008. Since then, it has been under the control of an International Organization for Standardization (ISO) committee of ...
The Preview application can display PDF files, as can version 2.0 and later of the Safari web browser. System-level support for PDF allows Mac OS X applications to create PDF documents automatically, provided they support the OS-standard printing architecture. The files are then exported in PDF 1.3 format according to the file header.
File:Analysis and Assessment of Gateway Process.pdf. Size of this JPG preview of this PDF file: 463 × 599 pixels. Other resolutions: 185 × 240 pixels | 371 × 480 pixels | 593 × 768 pixels | 1,275 × 1,650 pixels. This is a file from the Wikimedia Commons. Information from its description page there is shown below.
Print awareness. Print awareness refers to a child's understanding of the nature and uses of print. A child's print awareness is closely associated with his or her word awareness or the ability to recognize words as distinct elements of oral and written communication. Both skills are acquired in the child's natural environment.
File:Media and Information literacy.pdf. Size of this JPG preview of this PDF file: 408 × 599 pixels. Other resolutions: 163 × 240 pixels | 327 × 480 pixels | 972 × 1,427 pixels. Original file (972 × 1,427 pixels, file size: 6.5 MB, MIME type: application/pdf, 299 pages) Wikimedia Commons Commons is a freely licensed media file repository.