SATCOM ANTENNA DM C175 SERIES DUAL MODE BATWING UHF ANTENNA The DM C175 Dual Mode Batwing antenna represents the latest in airborne UHF Satcom antenna technology. Extremely lightweight and Mach 0.88 capable, the antenna provides for operation over the complete hemisphere with two separate antennas housed in one MIL-E-5400 qualified structure. A low angle monopole antenna provides coverage from 0 degrees to +40 degrees above the horizon. A separate crossed dipole antenna provides circularly polarized high angle coverage in the +40 degree to 90 degree (zenith) elevation sector. The high angle mode’s hybrid coupler and 50 ohm load termination are housed internally to the unit thereby greatly simplifying installation and reducing customer supplied system accessories to a coaxial switch and interconnecting cables. Ideally suited for rotary or fixed wing aircraft due to its lightweight, low drag profile, and ease of installation; the DM C175 is also suitable for shelter or shipboard applications. Several versions are available, including the most recent version, the DM C175-5, which features a strengthened housing for high vibration environments. SPECIFICATIONS Frequency Range Low Angle 225 – 400 MHz High Angle 240 – 400 MHz -5 Low Angle 225 – 400 MHz High Angle 243 – 318 MHz VSWR Low Angle 2.5:1 High Angle 1.5:1 Gain Low Angle Average within 2 dB of a quarter-wave stub ELECTRICAL High Angle +6.0 dBic typical Power 200 watts average Polarization Low Angle Vertical High Angle RHCP Connectors DM C175-1 Type N female; J8-low angle DM C175-5 J9 high angle Size See back of page Weight DM C175-1 7.5 lbs DM C175-5 8.0 lbs Qualification MIL-E-5400 class 2 MECHANICAL Drag 3.5 lbs at 45,000 ft, Mach 0.78 Color DM C175-X-1 White DM C175-X-2 Black 1000-155 (M59) Specifications subject to change without notice. Antenna Products EDO and Technologies GLOBAL TECHNOLOGY REACH SATCOM ANTENNA TABLE 1 CONNECTOR DM C175 SERIES DUAL MODE REF DES FUNCTION J8 LOW ANGLE MODE BATWING UHF ANTENNA J9 HIGH ANGLE MODE OUTLINE DIMENSIONS Inches (Centimeters) BUSHING 15.9 MAX 13.0 MAX 0.203 DIA (330.2) (5.15) (403.8) 0.34 (8.6) 8 PL 0.25 DIA (6.3) 6.20 ± 0.15 FWD (208.3) 0.93 MAX (23.6) 0.40 REF 1.75 ± 0.10 (10.2) 12.9 4.6 (44.5) 8 PL (327.7) (116.8) 3.3 (83.8) 4.1 1.1 0.203 DIA (104.1) 27.9) (5.16) 8 PL 2.594 1.718 (65.89) (43.64) 1.063 2.125 C 1.297 0.859 (32.94) (21.82) ABRASION 2.587 RESISTANT 5.125 (65.07) TAPE (130.17) 3 PL 7.688 2.56 (195.28) (65.0) Electronic Systems Group Antenna Products 455 Commack Road • Deer Park, NY 11729-4591 EDO and Technologies 631-595-6000 Fax 631-595-6180 GLOBAL TECHNOLOGY REACH http://www.edocorp.com.