A RF distribution network for split beam antennas is disclosed. The split beam antennas may include four-column cross-polarized user specific tilt antennas implemented in a 4T4R or 4T8R system. A RF distribution network may provide transmit signals from transmitters to antennas while also providing receive signals from the antennas. A RF distribution network may include 180° 6.9 dB combiners coupled to the antennas and also coupled 90° hybrids. A 180° 6.9 dB combiner may include a transmission network with transmission lines in a 4T4R system. Alternatively, a 180° 6.9 dB combiner may include a transmission network with transmit and receive filters in a 4T8R system. The transmission network couples the transmit filter and two filters by at least three λ/4 transmission lines. A transmission network provides isolation between two receive signal paths and, at the same time, provides power splitting of transmitter power to two duplexed transmit signal paths.