WMAQ-TV Controlrooms

Right: Studio D controlroom: Facility has custom-built TS-40 switchers that functionally are an extension of the relay-type switchers.

Studios A and E Controlrooms are similar in facilities. The switchers are 12 input, preset cutbar flip-flopoverlap relay type. There is a lap dissolve and an effects function between the preset and program buses that require no presetting. In addition, two effects buses are available with a full range of special effects including chroma key. These switchers are slated for replacement in the near future.

Studios B and D have custom built TS-40 switchers that functionally are an extension of the relay type switchers. They are 18 input, preset cutbar flip-flop solid state vertical interval switchers. Each input has a relay so that an "A" or a "B" input may be selected so that 36 video sources may be switched. They have the lap dissolve and effects functions between the preset and program buses as the older switchers, also the effects buses and chroma key. There is a mixer just prior to the studio output that is designated as "Supermix". This mixer allows video such as a digital clock to be inserted in the picture without tying up anyof the normal switcher facilities. The mixer is fed from a bus which is designated "Key-Supermix-Emergency." The key function is used as an external key to the effects unit.

The emergency feature allows cameras to be switched in event of a malfunction of the main switching bus. It may also be used as a bypass of the main switching to allow for rehearsal during program segments.

All controlrooms are provided with reel and cartridge tape recorders, and A, E and D Studios also have turntables available.

Return to the 1970 WMAQ-TV tour

Introduction and main index to this site
WMAQ radio history | "Amos 'n' Andy" | "Fibber McGee and Mollie" | "The Breakfast Club"
Dick Kay | Television at the Merchandise Mart | 1970 television facilities tour | Channel 5 turns 20
The "Chicago School" of television | "Kukla, Fran and Ollie" | Dave Garroway | Mary Hartline
"Lights Out" | Sound effects | 1930 studio tour | WLS | "Empire Builders" | Barry Bernson
Floyd Kalber | The Queen of Love and Beauty | "Today's Children" | Staff announcers | Carol Marin
Ron Magers | Studs Terkel l "Chicago Tonight" | Channel 5 News scrapbooks |Roger Miller recalls
Zoo Parade | Clifton and Frayne Utley | Val Press | Len O'Connor | Johnny Erp | Bill Ray | Daddy-O
Experimental Television: 1930-1933 | Bob Deservi | Kermit Slobb | Ding Dong School | Quiz Kids
Bob Lemon | The Korshak Chronicles | KYW: The Chicago Years | WENR | O.B. Hanson | Renzo
Jack Eigen | Ed Grennan | The World's Best Cup of Coffee | Glenn Webster | Mr. Piano | Hawkins Falls
Chicago Television for Kids |
Radio Hall of Fame |The NBC News Night Report: 23 February, 1967
Audio and video downloads
About the Curator

Comments or suggestions? click here to send them to Rich Samuels

Created by Rich Samuels (e-mail to rich@richsamuels.com)