| The A |
| desirable for usage in the UHF broadcast band, both as transmit and receive |
| device. Actual installations have demonstrated that the circular polarization of |
| this antenna minimizes variations in signal strength and almost completely |
| eliminates multipath problems, a primary cause of ‘hits’ or nulls. The gain of this |
| antenna over the entire UHF band is superior to the common ‘off the shelf’ an- |
| tennas. The A |
| utilize just one antenna model anywhere in the UHF spectrum. Because of its |
| unique 3 dimensional radiation pattern, the antenna can be mounted above the |
| talent or venue, oriented with the antenna element facing down. With the main |
| lobe (maximum gain) of the antenna pointing downward to the desired source, |
| this arrangement has the advantage of greatly reduced sensitivity for potentially |
| interfering signals arriving horizontally. |
| High Gain – Minimized Multipath – Broadband |
| Technical Data |
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Antenna Type | Circular Polarized Helical |
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Forward Gain | min 8 dBi (at 650 MHz) |
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Bandwidth | 450 - 960 MHz |
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Polarization | Circular |
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Connector Type | N (female), type |
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Half Power Beam Width | ± 40 degrees |
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SWR | < 1.5:1 |
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Power Handling Capability | 50 W |
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Radome Depth | 5.5” (140 mm) |
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Ground Plane Diameter | 14” (356 mm) 6061 Anodized Aluminum |
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Mounting Bracket | 4 x 3.625 x 3/8” (101 x 93 x 9.5 mm) |
| Lexan Plate, |
| Matthews Pin avail. for lighting grid mount |
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Radome Material | Black Acrylic |
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Element | Copper |
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Element Support | Lexan |
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Hardware | Stainless Steel |
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Approximate Weight | 3.1 lbs. (1.41 kg) |
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Circularly Polarized Antenna for the UHF Band | 03.2006 |