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Part Number -- VAS30-88 |
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| Name: | VAS 30-88 Antenna |
| Category: | VHF Antennas |
| Photo(s): | VAS 30-88 |
| Height: | 113 in (2.87 M) (repeated below) |
| Frequency Range: | 30 MHz to 88 MHz - for antennas (repeated below) |
| Features: | * Broadband * Extremely Rugged * High reliability * Base mount for placement flexibility * High Voltage Isolation for safety * Easy assembly / disassembly |
| Description: | Valcom's
model VAS 30-88 is a general purpose VHG broadband communications
antenna system. Its rugged construction and spring mounting
of the whip antenna make it ideal for vehicular applications. The antenna system provides omnidirectional vertically polarized coverage over the 30 to 88 MHz frequency range. It is conservatively rated for 75 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 protection. 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 in length with antenna elements less than one inch in diameter and weighs approximately 11 pounds. 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 0.375 inch diameter holes on a 4.8 inch dia. bolts circle located on the mounting flange at the base of the antenna system. |
| Notes: | 1.
Do not use lead base paint to touch-up or repaint antenna. Use
only epoxy base paint. 2. Specifications subject to change without notice. |
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Electrical Characteristics |
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| Frequency Range: | 30 MHz to 88 MHz |
| Polarization: | Vertical |
| Power Handling: | 75 Watts average |
| Azimuth
Coverage [Radiation Pattern]: |
Omni-directional ± 1 dB |
| High Voltage Protection: | 12 KV upon contact with high power line or high voltage source |
| VSWR: | 3.5:1
maximum 2.5:1 average |
| Gain: | -7.6 to -1.1 db relative to resonant quarter wave monopoles over 30 to 88 MHz |
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Mechanical Characteristics |
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| Height / Length: | 113 in (2.87 M) |
| Weight: | 11 Lbs. (5 kg) |
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Environmental Characteristics |
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| Temperature: | -40°F to 131°F (-40°C to 55°C) |
| Humidity: | Relative humidity 95% |
| Altitude: | -1000 Ft to 16000 Ft (-300 M to 5000 M) above sea level |
| Wind Loading Test: | 50 MPH (80 KPH) operating |
| Ice Loading Test: | 1/2 in (13 mm) radial |
| Vibration: | 5-500 Hz |
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| ©2006 All information and materials contained within are the property of Valcom Manufacturing Group Inc.. | |
