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Part Number -- V-33070 |
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| Name: | 75-Foot Coil Loaded Self Supporting Whip Antenna V-33070 Series | |
| Category: | AM Broadcast Antennas | |
| Diagrams: | Dimensions and Mounting Details | |
| Photo(s): | V-33070 | |
| Height: | 22.8m (74.8 Ft) (repeated below) | |
| Frequency Range: | 100 KHz to 30 MHz — with tuner (repeated below) | |
| Features: | * Coil
Loaded * High efficiency * High strength filament wound fibreglass base * Low cost installation * Low cost maintenance |
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| Description: | The
Valcom Model V-33070 is a heavy duty, field proven high
reliability, coil-loaded 75-foot whip antenna for maritime and
aviation applications. The second section is inductively
loaded to the resonant frequency as specified by the customer.
Originally designed to the stringent requirements of the Canadian
Department of Transportation for the fixed non-directional radio
beacon service, it is now employed around the world in many applications.
Notably among these are high efficiency coast station requirements
in the 100 KHz to 1500 KHz bands for marine and aeronautical radio
beacon and communicating systems. The pedestal base enables the antenna to be mounted to its foundation. The usual method of installation is with an above-the-base feed-point. The base is made up 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 heavy conventional brass and porcelain insulator. The shape transmits the bending moment evenly to the base mounting bolts. The V-33070 is available in two standard configurations to meet various systems and installation requirements. The standard model is provided with an above-the-base feed-point and the optional configuration is with a base feed-through insulator. The insulator is the same as that employed on Valcom's NATO antennas. The average power rating of this antenna is 2 KW below 1.5 MHz and 5 KW above 1.5 MHz. A heavy duty galvanized steel base plate (VHB-17) is recommended for above-base feed configurations to simplify and speed antenna installation and inspection. also available is a heavy duty galvanized steel tower (VTGS-20) for raising the antenna above obstructions. The Valcosphere is a Valcom designed "capacity hat" which adds capacity thus giving the antenna the 2 KW power handling capability. |
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Accessories |
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| Ground Sheet: | use the VGS-120120AM | |
| Steel Tower: | use the VTGS-20 | |
| Hinge Plate: | use the VHB-17 | |
| Gin Pole: | if using the VTGS-20, use
the VGP-10 or VGP-17 if using the VHB-13, use the VGP-13 |
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| Lightning Arrestor: | use the VLA-200 | |
| Foundation Details: | if
using the VTGS-20, use these Foundation
Details if using the VHB-13, 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 2 MHz — as specified by customer | |
| Power Rating: | 2 KW below 1.5 MHz; 5 KW above 1.5 MHz | |
| Dry Withstanding Voltage: | 30 KV | |
| Electrical Length: | Varies with loading section | |
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Mechanical Characteristics |
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| Comparision: | V-33070-CL2 | V-33070FT-CL2 |
| Mechanical Length: | 22.8m (74.8 Ft) | |
| Weight: | 350 Lbs. (158 kg) | 360 Lbs. (162 kg) |
| Centre of Gravity: | 7.6 M (25 Ft.) | 7.3 M (24 Ft.) |
| Base Insulator: | Epoxy Fibreglass | |
| Top Termination: | Valcosphere | |
| Joints: | Bronze Threaded Section with Lock Pin | |
| Finish: | Epoxy Polyamide Paint | |
| Abrasion Resistance: | Good | |
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Environmental Characteristics |
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| Temperature: | -50°C to 65°C (-60°F to 150°F) | |
| Wind Loading Test: | To 240 km/hr (150 mph) | |
| Ice Loading Test: | 1.87 cm (.75 in) Ice at 160 Km/Hr (100 MPH) | |
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| ©2006 All information and materials contained within are the property of Valcom Manufacturing Group Inc.. | |
