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WEUR's tower atop the Oak Park Arms. The station began broadcasting October 7, 1950. [1] The station's call sign was originally WEBS, but before going on the air the call sign was changed to WOPA to reflect the location of its studios. [2] The studios and antenna were in the former Oak Park Arms Hotel, now a retirement community. [2]
The sound reduction index is used to measure the level of sound insulation provided by a structure such as a wall, window, door, or ventilator. It is defined in the series of international standards ISO 16283 (parts 1-3) and the older ISO 140 (parts 1-14), or the regional or national variants on these standards.
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With regard to exterior noise, the codes usually require measurement of the exterior acoustic environment in order to determine the performance standard required for exterior building skin design. The architect can work with the acoustical scientist to arrive at the best cost-effective means of creating a quiet interior (normally 45 dB).
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As of 2018, Oak Park is the 52nd busiest of the 236 non-downtown stations in the Metra system, with an average of 991 weekday boardings. [1] It is the final stop for most UP West trains before the terminus at Ogilvie Transportation Center.
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Windows 3.1 with enhanced networking; designed to work particularly well as a client with the new Windows NT. [4] [5] Snowball — Windows for Workgroups 3.11: An updated version of Windows for Workgroups 3.1, which introduces 32-bit file access and network improvements. It also removes the Standard Mode, effectively dropping support for 16-bit ...