**SAGE System
at the Lincoln Laboratory,**
**Massachusetts
Institute of Technology**

*SAGE
is the acronym for Semiautomatic Ground Environment System*

**Sometime around
1958 another IFC tech and myself were called by Lt Leggette, our first
Battery Commander who had transferred to SAGE, to see if we wanted a grand
tour of the system at the Lincoln Laboratory. Of course we accepted and
what a tour it was!**

**Sadly we could
not take any pictures but we were given a very good look at what it was
all about. The SAGE FSQ-7 computer covered the entire second floor of the
Direction Center and was comprised of about 70 large frames containing
60,000 tubes plus all the circuitry involved than ran 24 hours a day 7
days a week. There also was an equal size back-up SAGE computer to bring
on line in case the main one needed repairs or preventative maintenance.
The entire system also had it's own emergency AC power in case of grid
AC power failure.**

**The data inputs
for the computer in the SAGE Direction Center came from many different
sources:**
**1. Higher
Headquarters**
**2. Early
Warning Planes**
**3. Picket
Ships**
**4. Texas
Towers**
**5. Search
Radars**
**6. Gap Filler
Radars**
**7. Height
Finder Radars**
**8. Ground
Observer Corps**
**9. From about
29 other SAGE Direction Centers around the United States**

**Other inputs
included:**
**1. Weapon's
status from all weapons bases**
**2. Weather
data**
**3. Flight
plans of Commercial Aircraft**

**The data outputs
from the SAGE Direction Center went to:**
**1. Higher
Headquarters**
**2. Air Force
Interceptors**
**3. Nike Units**
**4. AA Gun
Installations**
**5. Other
Missile Units**
**6. Civil
Defense Units**
**7. To other
SAGE Direction Centers so they all were in the loop**

**The
Direction
Center**

**We were also
given a non-classified handout booklet about the SAGE system which has
quite a few pictures and diagrams in it that the following pictures are
from.**

BACK |
NEXT |
HOME |