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PS4-2U
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PS4-3U
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PS4-4U
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PS4-6U
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| | Electrical specifications
| Model |
PS4-2U |
PS4-3U |
PS4-4U |
PS4-6U
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| Operating frequency band, MHz |
400-490
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| Insertion loss (adjustable) not more, dB |
1 |
1,5 |
2 |
3
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| Max. frequency bandwidth, MHz |
1 |
1,5 |
2 |
4
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| Impedance, Ohm |
50
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| Gain |
see figure
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| VSWR, not more than |
2
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| Input power, W |
not more than 300
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| Temperature range, °C |
from -30 to +60
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| Cavity electrical length |
1/4λ
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Mechanical specifications
| Model |
PS4-2U |
PS4-3U |
PS4-4U |
PS4-6U
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| Diameter of cavity, mm (ins.) |
110 (4")
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| Weight, kg |
3,1 |
4,4 |
5,7 |
8,3
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| Connector |
N-female
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| Mount to 19-inch rack |
present
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| Length/Width/Depth not more, mm |
360x480x115 |
360x480x225
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Conditions of UHF range communication systems development require broadband receiving filters with U-shaped characteristic. Moreover, the more receiving channels you have, the wide band must be.
Our preselectors PS4-4(8)U, thanks to modular design, enable to increase the number of channels adding additional filters and conducting necessary adjustment.
These filters provide repeater operation trough common antenna without duplexer used, at standard 10 MHz frequency separation.
Preselectors typical gain-frequency characteristics
PS4-3U
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PS4-4U
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