Who we are: The SEFAC brand name

graphic design click for SEFAC Lift and Equipment

early information input keyboard
Due to the rapid expansion of air travel In the 1960s, a new method of getting flight arrival and departure information to the traveling public was needed.
One of the very first Flight Information Display (FID) systems using a character generator to display arrival and departure information on video monitors located in airport terminals was developed and marketed under the SEFAC brand. The mnemonic stood for System of Electronic Flight-information Access and Control. The photo is of a keyboard terminal of an early system, note the SEFAC logo above the keyboard and under the thumbwheel style page selector switches.
By the late 1960s, a new type of voice paging communication system was needed that would manage paging traffic in larger airports.
It was necessary to separate public address announcements by airline so that they were heard only in the specific gates and concourses used by that airline.
At the same time, common spaces such as ticket lobbies and baggage claims needed to carry pages from all airlines.
As each airline required many microphones, a system was needed to prevent multiple users from talking over each other. This was a problem because users in different locations could not hear each other, although they all needed to be heard in common areas such as ticket lobbies.
It was necessary to keep users from speaking into shared areas at the same time.
In addition, it was necessary to prevent a single microphone from tying up the system by excessive, lengthy use. F. B. Mewborn II devised a system composed of newly available integrated circuit logic chips and innovative use of analog combining networks to fill these several requirements. The system was marketed under the SEFAC brand because of brand recognition among commercial air carriers.
Thirteen years later, Baker Audio was instrumental in devising the first use of computers and digital audio switching in airport environment PA systems. This new concept ended SEFAC use in larger airports, as these paging systems relied on analog switching, rather than digital. Because the SEFAC system uses no computers to require rebooting, antivirus software, driver updates, or software license fees, many are still in use in smaller airports, and are preferred because of exceptional reliability and longevity.