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Part Number -- VGP 30-108 |
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| Name: | Valcom Ground Plane AM and FM Radio Broadcast Antenna |
| Category: | Very High Frequency Antennas |
| Diagrams: | Antenna Assembly and Mounting Assembly |
| Height: | 65.12 In (repeated below) |
| Frequency Range: | 30 MHz to 108 MHz |
| Description: | The Valcom VGP 30-108 AM
and FM antenna provides omnidirectional, vertically polarized
coverage with 2 dBi minimum azimuth gain throughout the 30-108 MHz
frequency band. Designed to handle power levels up to 100
Watts CW, it exhibits an input VSWR of less than 3:1 as measured at
the N type input connector located at the bottom of the base.
The antenna is influenced relatively little by its mounting location
and surrounding environment due to the inherent broadband
characteristic of the electrical design.
A broadband radiating element and matching network are hermetically sealed inside the antenna's high strength epoxy fibreglass radome. The interior is foamed for shock resistance and to preserve the watertight integrity against radome puncture and serious surface damage. An aluminum base and three flexible and quickly deployable ground radials make up the lower portion of the antenna. Designed for installation at a ground station, the quick clamp socket accepts a two inch pipe mast for mounting at the top of a support tower. The antenna is designed to comply with the environmental, shock and vibration requirements of military specification MIL-E-4158 for general purpose ground equipment and is air transportable at high altitudes. |
| Notes: | 1. Antenna is supplied with a flexible quick-access, transportable storage bag. Bag weight = 2 lbs. max. |
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Accessories |
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| Storage Bag: | The Antenna is supplied with a flexible quick-access, transportable storage bag. Bag weight = 2 lbs (0.9 kg) maximum. |
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Electrical Characteristics |
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| Frequency Range: | 30 MHz to 108 MHz |
| Polarization: | Vertical |
| Power Handling: | 100 Watts average |
| Azimuth
Coverage [Radiation Pattern]: |
Omnidirectional |
| Zenith Coverage: | Figure-eight dipole |
| Impedance: | 50 Ohms nominal |
| VSWR: | 3.0:1 maximum |
| Gain: | 2.0 dBi minimum |
| Input Connector: | Type N Receptacle |
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Mechanical Characteristics |
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| Height: | 65.12 In (165.40 cm) |
| Radome Diameter: | 3.09 In (7.85 cm) |
| Weight: | 15 Lbs. (6.8 kg) maximum |
| Mounting: | Aluminum quick-clamp to a vertical 2.0 In (5.1 cm) nominal OD pipe stub |
| Finish: | Aliphatic polyurethane green per MIL-C-46168D, Type IV, or by customer order |
| Accessory: | Antenna supplied with a flexible quick-access, transportable storage bag. Bag weight = 2 lbs. max. |
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Environmental Characteristics |
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| Temperature: | -65°F to 150°F (-54°C to 65°C) |
| Wind Loading Test: | To 100 MPH (160 km/H) |
| Vibration: | MIL-E-4158 |
| Shock: | MIL-E-4158 |
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| ©2006 All information and materials contained within are the property of Valcom Manufacturing Group Inc.. | |
