Cell Site Layouts 3-5
Transmit cabling
In the transmit path, the output of each Transmit Receive Unit (TRU) is connected to the input of each corresponding power amplifier (PA) on the Dual Power Amplifier (DPA) module. The output of each power amplifier (PA) is input to an
The output of the ATC is connected to the Transmit (TX) port of the duplexer. For RF Frames using more than one ATC, the outputs of the ATCs are combined together and connected to the TX port of the duplexer. The duplexer serves as the interface between the antenna system and the RF frame. Table
Table
RF Frame 1 PA to ATC connection for an omni Metrocell with up to 20 channels
| From | Through |
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| DPA 1 - Port1 (CCH) |
| ATC1 - Port 1 |
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| DPA 1 - Port2 |
| ATC1 - Port 2 |
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| DPA 2 - Port1 |
| ATC1 - Port 3 |
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TRU/DPA | DPA 2 - Port2 (LCH) | ATC Shelf 1 | ATC1 - Port 4 |
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Shelf 1 |
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DPA 3 - Port1 |
| ATC1 - Port 5 |
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| DPA 3 - Port2 |
| ATC1 - Port 6 |
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| DPA 4 - Port1 |
| ATC1 - Port 7 |
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| DPA 4 - Port2 |
| ATC1 - Port 8 |
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| DPA 5 - Port1 |
| ATC2 - Port 1 |
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| DPA 5 - Port2 |
| ATC2 - Port 2 | Duplexer |
| Antenna |
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| Position 2 |
| (Main receive) |
| DPA 6 - Port1 |
| ATC2 - Port 3 |
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TRU/DPA | DPA 6 - Port2 | ATC Shelf 2 | ATC2 - Port 4 |
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Shelf 2 |
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DPA 7 - Port1 |
| ATC2 - Port 5 |
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| DPA 7 - Port 2 |
| ATC2 - Port 6 |
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| DPA 8 - Port1 |
| ATC2 - Port 7 |
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| DPA 8 - Port 2 |
| ATC2 - Port 8 |
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| DPA 9 - Port1 |
| ATC3 - Port 1 |
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TRU/DPA | DPA 9 - Port 2 | ATC Shelf 3 | ATC3 - Port 2 |
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Shelf 3 |
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DPA 10 - Port1 |
| ATC3 - Port 3 |
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| DPA 10 - Port2 |
| ATC3 - Port 4 |
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Note: Additional RF Frames with 20 channels or less are connected to their respective TX/RX antennas in the same way as RF Frame 1.