R8149 External Antenna Installation Guide
External Antenna Connection of the Round 4-Port R8149
External Antenna Connection of the Round 2-Port R8149
External Antenna Connection of the Round 4-Port R8149 M2135B
Precautions:
The pRRU should be floating ground, so the external antenna cannot be grounded. The cables and components connecting pRRU and antenna cannot be grounded. All the bare metal connectors between the external antenna interface of the Pico RRU and the antenna must be insulated.
The pRRU is an indoor product. The external antenna must be installed indoors and cannot be installed outdoors or in a semi-open space.
External Antenna Connection of the Round 4-Port R8149
The following figure shows the structure of the external 4-port R8149:
Example of the external 4-port R8149 connected to an external antenna:
Port of R8149 M182326
| Channel | 1.8G | 2.3G | 2.6G |
|---|---|---|---|
| A1+ | FL+inter-G | / | NR |
| A1- | FL+inter-G | / | NR |
| A2+ | / | TL | NR+TL |
| A2- | / | TL | NR+TL |
Port of R8149 T2600/T2600F/T4900
| Channel | 2.6G (T2600/T2600F) |
4.9G (T4900) |
|---|---|---|
| A1+ | NR+TL | NR |
| A1- | NR+TL | NR |
| A2+ | NR | NR |
| A2- | NR | NR |
Port of R8149 M182135
| Channel | 1.8G | 2.1G | 3.5G |
|---|---|---|---|
| >A1+ | / | FL/UMTS | NR |
| A1- | / | FL/UMTS | NR |
| A2+ | FL | / | NR |
| A2- | FL | / | NR |
Port of R8149 T3500
| Channel | 3.5G |
|---|---|
| A1+ | NR |
| A1- | NR |
| A2+ | NR |
| A2- | NR |
Example of the external 4-port round R8149 installation scenarios
1. Four ports connected to a panel antenna:
2. Each two ports connected to a panel antenna or a mushroom antenna:
3. Each single port connected to a mushroom antenna:
Note: If a mushroom antenna is used, connect it with a jumper.
External Antenna Connection of the Round 2-Port R8149
The following figure shows the structure of the external 2-port round R8149:
Port of external 2-port round R8149 M1826B
| Channel | 1.8G | 2.6G |
|---|---|---|
| A1+ | FL+inter-G | NR+TL |
| A1- | FL+inter-G | NR+TL |
Example of the external 2-port round R8149 installation scenarios
1. Two ports connected to a panel antenna or a mushroom antenna:
2. Each single port connected to a mushroom antenna:
Note: If a mushroom antenna is used, connect it with a jumper.
External Antenna Connection of the Round 4-Port R8149 M2135B
Port of external 4-port round R8149 M1835B
| Channel | 2.1G | 3.5G |
|---|---|---|
| A1+ | FL/UMTS | >NR |
| A2+ | ||
| A1- | FL/UMTS | NR |
| A2- |
The external 4-port round R8149 M2135B has the following characteristics:
1. A1+ and A2+ are two channels separated by the same channel. The same is true for A1- and A2-.
2. Built-in combiner&power divider, it feeds 2TR 2.1 G and 2TR 3.5 G into 4 ports at the same time.
3. A1+/A1-/A2+/A2- supports both 2.1 G and 3.5 G. A1+ and A1- are in a group, connected with a 2TR antenna to achieve dual-stream effect. A2+ and A2- are in a group.
4. Both 5G NR and 4G LTE are 2T2R, 5G NR 4T4R is not supported. Only 2-port antennas are supported. Connecting a 4-port antenna may cause the main or diversity signals to offset against each other.
Example of the external 4-port round R8149 M2135B installation scenarios:
Characteristics: Two 2-channel antennas are deployed separately. Each antenna supports NR 2T2R and LTE 2T2R.
Characteristics: Each antenna supports NR 1T1R and LTE 1T1R.