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Part Number -- AS-3370B/U |
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|---|---|
| Name: | 18-Ft Aluminum Whip Antenna AS-3770B/U |
| Category: | HF Antennas |
| Diagram(s): | Dimensions and Mounting Details |
| Photo(s): | AS-3770 |
| NATO Stock Number (NSN): | 5985-01-383-8506 |
| Height: | 216 in ± 1 in (5.48 M ± 2.54 cm) (repeated below) |
| Frequency Range: | 10 MHz to 30 MHz (Twin Whip Configuration) |
| Features: | * Power
handling up to 5 KW * Minimum maintenance * Shipboard applications * Broadband * Weatherproof |
| Description: | The
AS-3770B/U 18 foot aluminum whip transmitting/receiving antenna is
designed and built to meet the US Navy requirements for shipboard
antennas. The antenna Meets MIL-S-901 grade A for shock;
MIL-STD-167 for vibration. The antenna is used with general HF communications equipment. the antenna provides vertically polarized, omni-directional azimuth radiation from 10 to 30 MHz when the antenna is operated in a twin whip and tuner configuration for broadband applications. It can be used singularly for general receiving or transmitting applications. The antenna consists of a tapered aluminum radiating element and an integral fibreglass insulator and base mounting flange. It is a single piece antenna which has three side feed points. The integral insulator and base mounting flange is bonded to the bottom of the radiating element. A drip shield is provided just below the lower feed point. the mechanical strength of the integral insulator and mounting flange is achieved with a patent process using high strength filament fibreglass and epoxy resin. |
| Notes: | 1.
Do not use lead base paint to touch-up or repaint antenna. 2. NATO Stock Number 5985-01-383-8506 3. Specifications subject to change without notice. |
| Technical Manual: | 
AS-3370 Manual |
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Accessories |
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| Ground Sheet: | use the VGS-36100 |
| Lightning Arrestor: | use the VLA-200 |
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Electrical Characteristics |
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| Frequency Range: | 10 MHz to 30 MHz (Twin Whip Configuration) |
| Polarization: | Vertical |
| Power Rating: | 5
KW (Singular Antenna) 10 KW (Twin Whips with Tuner) |
| Power Handling: | To 5 KW average |
| Azimuth
Coverage [Radiation Pattern]: |
Omni-directional |
| VSWR: | <3:1 (Twin Whip Configuration) |
| Input Connection: | 1/4 - 20 UNC |
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Mechanical Characteristics |
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| Height / Length: | 216 in ± 1 in (5.48 M ± 2.54 cm) |
| Weight: | 78 Lbs. (35.3 kg) |
| Radiating Element: | Aluminum |
| Base Insulator: | Epoxy Fibreglass |
| Finish: | Haze Gray silicone alkyd enamel per TT-E-490 colour 26270 per FED STD 595 |
| *Note On Finish: | DO NOT use LEAD BASE paint to touch-up or repaint antenna |
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