® assuredcommunications™ RF-1980F-AT001 / RF-1980-AT001 TILT-WHIP ADAPTERS for use with a vehicular whip to allow for NVIS communication The RF-1980 family provides whip antennas the flexibility to tilt from 0˚ (vertical) to 50˚, 70˚, and 90˚. The use of a tilt-whip adapter provides radiation patterns that accommodate near vertical incidence skywave (NVIS) propagation. The RF-1980F is a tilt-whip adapter with a spring base that bolts to standard 4.5-inch bolt hole pattern. The length of whip antenna is limited to 16 feet. The RF-1980 is a tilt-whip adapter that mounts directly on a standard whip base. If a locking base is used, a 32-foot whip can be installed with this tilt-whip adapter. Specifications for the RF-1980 Electrical Mechanical ■ Frequency Range 2 to 30 MHz ■ Deployed Dimensions RF-1980F 20.5 inch RF-1980 19 inch ■ RF Power Capacity 1 kW ■ Color RF1980F-AT001: CARC green RF-1980F-AT002: CARC tan RF-1980: Flat black ■ Input Impedance 50 ohm, nominal ■ Radiation Pattern Azimuth - omnidirectional Elevation - see below ■ Polarization Turns vertically polarized whip into horizontal polarized tilt whip ■ Gain with 32 foot whip: 0 dBi @ 8 MHz With 16 foot whip: -2 dBi @ 8 MHz ■ Weight 10 lb (4.5 kg) ■ Mounting Interface RF-1980F: 4-3/8 inch hole equally spaced on 4.5-inch diameter RF-1980: threads on standard whip base ■ Installation Time RF-1980F: 10 minutes, 1 person RF-1980: 2 minutes, 1 person Options Environmental ■ Designed to meet MIL-STD-810 ■ SB-V16/32: 16- or 32-foot whip (The RF-1980 family are adapters. They require a whip for operation.) ■ RF-292 Universal Antenna Mount for vehicles 8 MHz 8 MHz 0 0 4 MHz 4 MHz 2 MHz 2 MHz –90 90 32’ Whip on Vehicle without Tilt Whip 90 –90 32’ Whip on Vehicle with Tilt Whip (antenna tilted over ground) 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-270A