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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:
| 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 |
