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TWICE THE SPEED
WITH DOUBLE LEAD
SCREW-LOCKING
CONNECTORS
SERIES MI -SL (miniature)
7, 12 (8 -4), 14, 18, 20, 21, 26,
34, 41, 50, 75 contacts.
Exclusive hermetically -sealed
chassis unit (HMI -SL).
SERIES SMI -SL
(sub -miniature)
7, 11, 14, 20, 26, 34 contacts
SERIES 980 -SL
(heavy -duty, power)
12, 18, 24, 34 contacts
SERIES 990 -SL
(heavy -duty, power)
7, 10, 15, 18 contacts
Dependable performance
Environmental resistance
Insured polarization
Unlimited number of contacts
Insured contact protection
Positive locking action
Disengagement ease
Vibra -shock resistance
Side and rear cable entrace hoods
Melamine or Alkyd molding
compounds
Rack, panel or chassis mounting
Custom -designed to meet
performance requirements
Write TODAY for complete
technical data
U.S. COMPONENTS, Inc.
associated with
U.S. Tool 8 Mfg. Co., Inc.
454 East 148th Street, New York 55,N.Y
CYpress 2 -6525
ASDE Radar
(Continued from page 180)
tained from the Experimental
Model. The radar system thus
specified was to embody the best
features of the Experimental Model
and was also to have several improvements
in its characteristics
that experience had indicated would
be desirable. The more important
characteristics of the Engineering
Model are as follows:
Frequency
24,000 Mc
Pulse width
PRF
Azimuth
beamwidth
Vertical
coverage
Antenna
scan rate
Antenna
polarization
I -F amplifier
pass -band
PPI, cathoderay
tube
0.02 sec
(1/50 µsec)
14,440 pps
0.25°
Horizon
to 25°
60 rpm
Linear or
circular
80 to 180 Mc
Special
16 inch
Off- centering -1 radius,
any direction
Sweep speeds -1 /2, 1, 2, 3
miles per radius
Work on the Enginering Model
of ASDE got under way at AIL in
the spring of 1953. Fabrication of
the equipment was preceded by a
design study to overcome the deficiencies
of the Experimental Model
and to improve some of its basic
performance characteristics.
At the outset of this program,
a review was made to determine
whether or not one of the adjoining
frequency bands would prove
more desirable. Components for
both the 16,000 -Mc region and the
34,000 -Mc region had become available.
From an antenna -beamwidth
standpoint, it might appear desirable
to increase the frequency,
though the surface accuracy of the
reflector would then become increasingly
difficult to achieve. From
a weather standpoint, atmospheric
absorption was found to be no problem
at all compared with back -
scattering from rain; this would
favor the use of the lower fre-
182
For product information, use inquiry cord on pages 209 -210.
Tele -Tech & ELECTRONIC INDUSTRIES June 1956