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DM C57-1 Low Profile Metal Blade Radio Telephone Antenna
Frequency 450-470 MHz
(DAI Part# DMC57-1)
The DM C57-1 antenna has achieved a design breakthrough that has not compromised performance. Previous designs were 6 to 7" high and heavier. The DM C57-1 is only three and a half inches high and weighs 8 ounces.

The DM C57-1 operates with all airborne radio telephone systems in the 450-470 MHz frequency range. Reduced maintenance costs are achieved through the use of this low profile, all metal blade as a result of its unequalled mechanical strength and built-in reliability. The DM C57-1 is currently in use and field proven on business and commercial aircraft. This low drag antenna has extremely high side load strength and its construction is completely sealed to prevent damage from moisture, Skydrol, or other contaminants.
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SPECIFICATIONS
Electrical
Frequency Range 450 to 470 MHz
VSWR < 2.0:1 454 to 459 MHz
< 2.5:1 450 to 470 MHz
Efficiency > 85%
Impedance 50 OHMS
Polarization Vertical
Radiation Pattern Omnidirectional
Gain Equal to quarter wave stub
Mechanical
Connector N (female)
Weight 8 oz. maximum (0.22 Kg)
Finish White
Max Air Speed 0.85 Mach
Temp Range -65° F to +250° F
Altitude 70,000'
Drag 5.5 oz. @ 25,000' @0.85 Mach
Harris (D&M/EDO)
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