DM NI50-2

DM NI50 antennas, which replace the DM NI49 antennas, are used with all standard L-Band equipments because of their very broad bandwidth of 960 to 1,220 MHz.

Models of the DM NI50 antenna are directly interchangeable with virtually all L-Band blade and flush mounting antennas currently in service on commercial and military aircraft. While some replacements will require the use of standard adapter plates which are readily available, none require airframe modification.

Reduced maintenance costs are achieved through the use of this low-profile, all-metal blade as a result of its unequaled mechanical strength and built-in reliability. Currently in use on business, commercial and military jet aircraft, the DM NI50 antennas have clear advantages over the other current designs:

• Extremely high side load strength guards against breakage by ground handling gear.
• Completely sealed construction prevents failure from moisture intrusion.
• Lightning protection circuits prevent damage to antenna and safeguard electronic equipment.

Electrical
Frequency Range	960-1220 MHz
VSWR	960-1220 less than 1.7:1 1000-1100 less than 1.5:1
Gain	Average at horizon 0 db
Polarization	Vertical
Impedance RF dc	50 Ohms Short Circuit
Power	3 kW peak 100 W peak
Mechanical
Weight	4 oz
Width	1.75"
Length	5.25"
Height	2.20"
Finish	Lusterless White
Connector	Male "C"
Mounting	4 #10 Stainless screws
Environmental
Aero Drag Sea Level, Mach 0.5 Sea Level, Mach 0.8	2 oz 4.5 oz
Side Load	Will withstand 175 lbs
Military	MIL-T-5422E
ARINC (ATC Transponder) (ATC Transponder)	532 E 521 D
FAA (ATC Transponder) (DME)	TSO-C74 TSO-C66a

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