VHF Communication Antennas VHF ... - Dallas Avionics
VHF Communication Antennas VHF ... - Dallas Avionics
VHF Communication Antennas VHF ... - Dallas Avionics
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Navigation Navigation <strong>Antennas</strong> <strong>Antennas</strong><br />
<strong>Avionics</strong> & Accessories<br />
DM NI70 Series DME/ATC<br />
Transponder <strong>Antennas</strong><br />
The DM NI70 L-Band antennas offer more than sufficient bandwidth (950<br />
to 1,220 MHz) for use with civil aviation ATC transponders and distance<br />
measuring equipment (DME). The antenna provides omnidirectional,<br />
vertically polarized coverage when installed on the top, or bottom, of<br />
an aircraft. Its streamlined shape assures minimum aerodynamic drag.<br />
Structurally, the antenna consists of a single metal element.<br />
P/N DM NI70<br />
Specifications<br />
Electrical<br />
EDO Corp./Dorne & Margollin<br />
Frequency Range<br />
VSWR<br />
Gain<br />
Polarization<br />
Power<br />
Radiation Patterns<br />
DC Resistance<br />
Impedance<br />
Mechanical<br />
Weight<br />
Connector<br />
Finish<br />
Environmental<br />
TSO C66a<br />
TSO C74b<br />
Drag, Sea Level @ 250 mph<br />
950 to 1220 MHz<br />
< 1.7:1 950 to 1220 MHz<br />
< 1.5:1 1000 to 1100 MHz<br />
Equivalent to a quarter wave stub<br />
Vertical<br />
2 kW peak<br />
Omnidirectional<br />
Open circuited<br />
50 OHMS<br />
0.25 lbs.<br />
C (female) DM NI70-1, DM NI70-3<br />
BNC (female) DM NI70-2<br />
White<br />
ENV. CAT. JAJXXXX<br />
ENV. CAT. JAJXXXX<br />
CAT. II<br />
0.5 lbs.<br />
0.82<br />
+<br />
+<br />
MOUNTING HOLE PATTERNS<br />
1.80<br />
DM NI70-1<br />
DM NI70-2<br />
3.625<br />
+<br />
4 "A" HOLES<br />
FOR NO. 8 SCREWS<br />
OUTLINE DIMENSIONS<br />
+<br />
+<br />
0.687 DIA<br />
Inches<br />
1.000<br />
0.500<br />
DM NI70-3<br />
2.20<br />
40<br />
1.10<br />
CONNECTOR<br />
TYPE C<br />
FEMALE (-1, -3)<br />
0.65<br />
0.144 DIA HOLE THRU<br />
CSK 100∞ X 0.28 DIA<br />
TYP 6 PLACES<br />
1.2501.750<br />
0.625 0.875<br />
0.88<br />
3.60<br />
5.25 1.75<br />
0.375<br />
1.250<br />
3.250<br />
4.500<br />
Specifications subject to change without notice.<br />
168<br />
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