® assuredcommunications™ RF-398-01 VHF LOW-BAND VERTICAL MONOPOLE ANTENNA a vertically polarized vehicular antenna The RF-398-01 Low Profile Vehicular VHF Antenna is a broadband (30 to 90 MHz), vertically polarized, end-fed monopole antenna designed for applications where short antenna length or antenna concealment is important. Operating over the 30 to 90 MHz frequency range, the internal matching network maintains a VSWR of less than 3.5:1 without a tuner or band switching. The RF-398-01 is a low-profile EMP protected, vehicular antenna. The feed-through spring mounts directly to a RF-292 Universal Antenna Mount. Order the RF-292 separately for vehicular mounting. Specifications for the RF-398-01 Electrical Mechanical ■ Frequency Range 30 to 90 MHz Height 1.9 m (74.7 in) ■ Polarization Vertical Weight 2.3 kg (5 lbs)) ■ Impedance 50 ohms (nominal) RF Connection BNC female ■ VSWR Less than 3.5:1 (per MIL-A-49283) Bolt-Hole Pattern Four 0.5 inch holes spaced on a 4.5 inch bolt-hole circle ■ Gain -5.8 dB at low end of band, gradually increasing to -1.7 dB at high end of band (per MIL-A-49283) Construction Two piece construction: ■ Passivated stainless steel element -- 0.20 inch (0.51 cm) at base tapering to 0.10 inch (0.25 cm ) at tip. ■ Power Rating 70 Watts ■ Reinforced polyester fiberglass mount with spring. ■ Matching Circuit Passive, broadband Features ■ ■ Radiation Pattern Omnidirectional ■ ■ ■ ■ ■ ■ Environmental ■ Salt Spray Salt spray resistant RF-398-01 Mechanical Details Short length Thin radiating element Matching Network Built-In 70 Watt capability High voltage isolation Standard Universal Mounting Full MIL-SPEC design RF-398-01 Antenna Mounting .20 in. (.51 cm) Dia. Nom Detail for mounting without RF-292 Universal Antenna Mount 4.5 IN. 11.43 CM .20 in. (.51 cm) Dia. Nom Collet 3.5 IN. 8.89 CM Stainless Steel Whip, Passivated 70.0 in. (178 cm) Stainless Steel Spring, Flat Black Reinforced Polyester Fiberglass Insulator, Forest Green Color Hex Bolt 4.7 in. (11.9 cm) Nom. .375 IN. .953 CM (4 HOLES) Broadband Network housing, Aluminum, Forest Green Color 3.06 in. (7.8 cm) Nom. 3.375 in. (8.6 cm) Dia. Nom. BNC Female Connector Ground Strap Assembly Washers Rubber Gasket Hex Nut Specifications are subject to change without notice. ® RF Communications Division | 1680 University Avenue | Rochester, NY USA 14610 www.harris.com 1-585-244-5830 assuredcommunications™ © Copyright 2005 Harris Corporation 8/05 DS-261A