{"id":1432,"date":"2010-09-13T17:31:35","date_gmt":"2010-09-13T21:31:35","guid":{"rendered":"http:\/\/www.engineeringradio.us\/blog\/?p=3928"},"modified":"2023-07-26T17:28:38","modified_gmt":"2023-07-26T21:28:38","slug":"the-engineering-room","status":"publish","type":"post","link":"https:\/\/www.engineeringradio.us\/blog\/2010\/09\/the-engineering-room\/","title":{"rendered":"The Engineering Room"},"content":{"rendered":"\n

The rack room, engineering room, technical operations center, frame room, or whatever it is called, is a central part of any radio station studio facility. \u00a0Normally found in a rack room are things like computer servers, switches and routers, structured cabling, telephone equipment, audio routing equipment, audio processing equipment, satellite receivers, wire termination blocks, microwave transmitters, and receivers, and sometimes even broadcast transmitters and phasors.<\/p>\n\n\n\n

\"TOC<\/a>
TOC equipment<\/figcaption><\/figure>\n\n\n\n

This is a rack room for one of the clients we service. \u00a0This particular facility has 6 FM and 2 AM radio stations. \u00a0Several stations share the same programming, however, so more accurately, there are four formats, thus four air studios, and four production studios. \u00a0The station uses AudioVault 100 for its audio playback and automation. \u00a0It is probably one of the few AV100 systems still in use.<\/p>\n\n\n\n

\"Broadcast<\/a>
Broadcast Electronics Audiovault 100 system<\/figcaption><\/figure>\n\n\n\n

There are four servers and drive bays mounted in two racks, right next to the 5 KW AM transmitter.  Doesn’t seem to be an issue.<\/p>\n\n\n\n

\"TOC<\/a>
TOC AM transmitters and Gates Phasor<\/figcaption><\/figure>\n\n\n\n

The studio is also co-located with one of the AM station’s transmitter sites, which always creates a special set of engineering problems. \u00a0 The antenna array consists of two 90-degree towers phased 210 degrees, which creates a figure eight pattern to the north and south. \u00a0The studio building is in one of the main lobes of the antenna system. \u00a0This means extra grounding is needed in the rack room and special attention needs to be paid to things like phone wiring and computer network cabling. \u00a0This facility uses shielded Cat5E, which seems to take care of any stray RF. \u00a0Of course, all the audio is balanced and properly terminated.<\/p>\n\n\n\n

\"ATI<\/a>
ATI DA 416 wiring connections<\/figcaption><\/figure>\n\n\n\n

For audio distribution, ATI DA416 audio distribution amps are used. \u00a0These are used to distribute the air signal, the program and audition audio, the satellite feeds, and remote broadcast feeds.<\/p>\n\n\n\n

There are several considerations for well designed engineering rooms:<\/p>\n\n\n\n

    \n
  1. Future wiring work will be needed, \u00a0there is no way that an engineer can plan for every contingency. \u00a0It is difficult to plan one or two years ahead, much less five or ten. \u00a0Keeping the wire conduits, raceways, trays, or troughs accessible is key to a happy existence. \u00a0This can be done by using overhead trays or raised floors and good cable management.<\/li>\n\n\n\n
  2. Ground everything to a single-point ground bus. \u00a0There is no such thing as too much grounding, so long as everything is bonded together. \u00a0Be sure to include TELCO and service entrance grounds.<\/li>\n\n\n\n
  3. Have direct paths outside to accommodate the STL transmission line, satellite cabling, etc. \u00a0If those antennas are located on the roof, have roof access in the rack room.<\/li>\n\n\n\n
  4. The environment directly impacts the life of the equipment. \u00a0Keeping the rack room environmentally isolated from the rest of the facility is highly desirable. \u00a0HVAC systems should be sized for the highest equipment load on the hottest day of the year. \u00a0Having some type of backup air conditioning is also a good idea.<\/li>\n\n\n\n
  5. Leave plenty of room to work behind racks or on the wire wall.  Cramped spaces create mistakes.<\/li>\n\n\n\n
  6. Make sure there is plenty of light to work, lack of light also creates mistakes.<\/li>\n\n\n\n
  7. Reserve some space for future growth. \u00a0Extra room on the back wall for more punch blocks, and extra space for additional racks is always a good plan.<\/li>\n\n\n\n
  8. Keep the wiring neat and documented.  There is nothing worse than an undocumented engineering room, it makes life difficult and in many cases, will eventually knock a station or two off the air when a wire gets snipped or pulled out.<\/li>\n\n\n\n
  9. Make the room secure.  Keep the doors closed and keep unauthorized people out.<\/li>\n<\/ol>\n\n\n\n

    There are two conventions of thought when it comes to rack planning. \u00a0The first is that all equipment should be mounted in close proximity. \u00a0It is easier to run all the STL transmission lines to one rack, all the satellite cables to another, etc. \u00a0Then there is the “rack assigned to a station” method, where each station has one rack with all of its processing, STL, EAS, and other equipment in it. \u00a0I prefer the first method, as it makes the room look more uniform, your mileage may vary.<\/p>\n\n\n\n

    When done right, engineering rooms can be a great centerpiece to any facility. \u00a0It is very impressive to take a client through the studio building and end up with “And this is the heart of the facility, all the radio stations run through this room…” \u00a0Several larger facilities have glass walled rack rooms for just that purpose. \u00a0It can be a positive attribute when everything is buttoned up.<\/p>\n","protected":false},"excerpt":{"rendered":"

    The rack room, engineering room, technical operations center, frame room, or whatever it is called, is a central part of any radio station studio facility. \u00a0Normally found in a rack room are things like computer servers, switches and routers, structured cabling, telephone equipment, audio routing equipment, audio processing equipment, satellite receivers, wire termination blocks, microwave … Continue reading The Engineering Room<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[144,143,142],"class_list":["post-1432","post","type-post","status-publish","format-standard","hentry","category-tech-stuff","tag-engineering-room","tag-rack-room","tag-toc"],"_links":{"self":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts\/1432","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/comments?post=1432"}],"version-history":[{"count":4,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts\/1432\/revisions"}],"predecessor-version":[{"id":12322,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/posts\/1432\/revisions\/12322"}],"wp:attachment":[{"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/media?parent=1432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/categories?post=1432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.engineeringradio.us\/blog\/wp-json\/wp\/v2\/tags?post=1432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}