VAS-108 (AS-5243/U) Broadband Whip
- Frequency Range: 30 MHz to 108 MHz
- VSWR: 3.5:1
- Power Handling: 100 W Average
- Extremely Rugged and Reliable
- Base Mount for Replacement Flexibility
- High Voltage Isolation for Safety
- Easy Assembly/Disassembly
- NSN: 5985-21-920-0006
Valcom's model VAS-108 is a general purpose VHF Broadband communications antenna system. Its rugged construction and spring mounting of the whip antenna make it ideal for vehicular applications.
The antenna system provides omni-directional, vertically polarized coverage over the 30 to 108 MHz frequency range. It is conservatively rated for 100 watts of RF input power and exhibits a VSWR of 3.5:1 or less over the entire operating band with reference to a 50 OHM line impedance. The input RF connection is made through a single coaxial BNC type connector centrally located on the bottom of the mounting base. The mounting base houses the matching unit and EMP protect.
Fibreglass upper and lower antenna whip elements and a polycarbonate mounting base with a spring antenna support comprise the antenna system's three piece construction. It is approximately 113 inches (2.85 M) in length with antenna elements less then one inch (2.5 cm) in diameter and weighs approximately 9.6 pounds (4.8 kg).
The antenna system has been designed to meet the vibration and service conditions of MIL-STD-167, Type 1 and MIL-STD-810D. Mounting is provided by four 0.45 inch diameter holes on a 4.5 inch dia bolt circle located on the mounting flange at the base of the antenna system.