NAVIGATION
SPECIFICATIONS
ELECTRICALMECHANICAL
Frequency Range 960 – 1220 MHz
VSWR 960 – 1220 MHz Less than 1.7:1
1000 – 1100 MHz Less than 1.5:1
Gain Equivalent to a quarter wave stub
Polarization Vertical
Power 2 kW peak
Radiation Patterns Omnidirectional
dc Resistance Open Circuited
Impedance 50 Ohms
Weight 0.25 lbs
Connector DM NI70-1, DM NI70-3 Type C Female
DM NI70-2 Type BNC Female
Finish White
TSO C66a ENV. CAT. JAJXXXX
TSO C74b ENV. CAT. JAJXXXX
CAT. II
Drag, Sea Level at 250 mph 0.5 lbs
Specifications subject to change without notice. 1000-110 (M68)
The DM NI70 L-Band antennas offer more than sufficient
bandwidth (950 to 1,220 MHz) for use with civil aviation
ATC transponders and distance measuring equipment
(DME). The antenna provides omnidirectional, vertically
polarized coverage when installed on the top, or bottom,
of an aircraft. Its streamlined shape assures minimum
aerodynamic drag. Structurally, the antenna consists of a
single metal element.
ENVIRONMENTAL
DM NI70 DME/ATC
TRANSPONDER ANTENNAS
NAVIGATION
Frequency Range 960 – 1220 MHz
VSWR 960 – 1220 MHz Less than 1.7:1
1000 – 1100 MHz Less than 1.5:1
Gain Equivalent to a quarter wave stub
Polarization Vertical
Power 2 kW peak
Radiation Patterns Omnidirectional
dc Resistance Open Circuited
Impedance 50 Ohms
Weight 0.25 lbs
Connector DM NI70-1, DM NI70-3 Type C Female
DM NI70-2 Type BNC Female
Finish White
TSO C66a ENV. CAT. JAJXXXX
TSO C74b ENV. CAT. JAJXXXX
CAT. II
Drag, Sea Level at 250 mph 0.5 lbs
The DM NI70 L-Band antennas offer more than sufficient
bandwidth (950 to 1,220 MHz) for use with civil aviation
ATC transponders and distance measuring equipment
(DME). The antenna provides omnidirectional, vertically
polarized coverage when installed on the top, or bottom,
of an aircraft. Its streamlined shape assures minimum
aerodynamic drag. Structurally, the antenna consists of a
single metal element.
OUTLINE DIMENSIONS
Inches (Centimeters)
DM NI70 DME/ATC
TRANSPONDER ANTENNAS
AIL Systems Inc.
455 Commack Road • Deer Park, NY 11729-4591
631-595-6000 Fax 631-595-6180
http://www.ail.com
2.20
5.25 1.75
40°
CONNECTOR
TYPE C
FEMALE (-1, -3)
0.88
0.65
1.000
1.80
0.687 DIA
3.625
+
+
+
+
+
4 “A” HOLES
FOR NO. 8 SCREWS
0.500
1.250
3.250
4.500
0.625
1.250
0.875
FULL R.
0.144 DIA HOLE THRU
CSK 100° X 0.28 DIA
TYP 6 PLACES
3.60
0.82
0.375
DM NI70-3
MOUNTING HOLE PATTERNS
1.750
DM NI70-1
DM NI70-2
1.10
