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Part Number -- V147-CL2 |
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| Name: | 49-Foot Medium Frequency (MF) Whip Antenna | |
| Category: | MF Antennas | |
| Diagram(s): | Dimensions and Mounting Details | |
| Photo(s): | V147-CL2 | |
| Height: | 49 Ft (14.9 M) (repeated below) | |
| Frequency Range: | 100 KHz to 30 MHz - for antennas with tuner (repeated below) | |
| Features: | * coil
loaded * high efficiency * high strength fibreglass base |
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| Description: | The
Valcom Model V-147-CL2 is a heavy duty, field proven, high
reliability coil-loaded, 49-foot whip antenna. The base and
second section are inductively loaded to the resonant frequency
specified by the customer. This antenna incorporates notable
features of two proven Valcom antennas: the base section of
the Canadian naval whip As-5085/SR and the loading section design of
Valcom's field-proven low frequency whip antenna V-33070-CL2. Valcom antennas are in use on maritime
marker buoys, off-shore drilling rigs, ships and HF communication
systems. The pedestal base mounts the antenna to its foundation. The base is made of a continuation of the same high strength filament fibreglass used in the antenna. The result is an integral base insulator with exceptional electrical and mechanical properties. Power handling capabilities are improved while eliminating the weight of conventional brass and porcelain insulators. The shape transmits the bending moment evenly to the base mounting bolts. The V-147-CL2 is available in two standard configurations to meet various system and installation requirements. The standard model is provided with an above-the-base feed point which is 18 inches above the bottom of the base. The optional configuration of the coil-loaded antenna is with a base feed-through insulator. For the feed-through model, a heavy duty galvanized steel tower (VTGS-20) is available in two-foot increments up to eight feet. These towers are used with both models to clear obstructions and the snow line. |
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| Notes: | 1. United States Patent Numbers 3, 725,944 and 4,500,888 Apply. | |
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Accessories |
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| Ground Sheet: | use the VGS-36100A | |
| Steel Tower: | use the VTGS-20 | |
| Hinge Plate: | use the VHB-17 | |
| Gin Pole: | use the VGP-10 or VGP-17 | |
| Lightning Arrestor: | use the VLA-200 | |
| Foundation Details: | use these Foundation Details | |
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Electrical Characteristics |
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| Frequency Range: | 100 KHz to 30 MHz - with tuner | |
| Resonant Frequency: | 100 KHz to 4.5 MHz - as specified by customer | |
| Power Rating: | 0.5 KW average 1.0 KW PEP | |
| Dry Withstanding Voltage: | 25 KV | |
| Electrical Length: | Varies with Loading Section | |
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Mechanical Characteristics |
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| Comparison: | V147-CL2 | V147FT-CL2 |
| Mechanical Length: | 49 Ft (14.9 M) | |
| Weight: | 165 Lbs. (75 kg) | 172 Lbs. (78 kg) |
| Centre of Gravity: | 14.1 Ft (4.4 M) | 14.5 Ft (4.4 M) |
| Base Insulator: | Epoxy Fibreglass | |
| Top Termination: | Valcosphere and Top Hat | |
| Joints: | Bronze Threaded Section with Lock Pin | |
| Finish: | Epoxy Polyamide Paint | |
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Environmental Characteristics |
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| Temperature: | -60°F to +150°F (-50°C to +65°C) | |
| Wind Loading Test: | To 150 MPH (240 km/H) | |
| Ice Loading Test: | .75 in (1.87 cm) at 100 MPH (160 km/H) | |
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| ©2006 All information and materials contained within are the property of Valcom Manufacturing Group Inc.. | |
