The spiral duplexer is the main accessory of the different-frequency duplex radio station and repeater station. Its function is to isolate the transmitting and receiving signals to ensure that both receiving and transmitting can work normally at the same time.
It is composed of two sets of band-stop filters with different frequencies to prevent the local transmitter signal from being transmitted to the receiver. It has the characteristics of high suppression, low insertion loss and high isolation.
| Model No. | Band Pass (MHz) | Separation(MHz) | Insertion Loss(dB) | VSWR | Rejection(dB) | Connector Type |
| SDX-136-174-50-4.6 | dot | ≥4.6 | ≤1.5 | ≤1.3 | ≥70 | N |
| SDX-136-174-50-2-4.6 | 2 | ≥4.6 | ≤1.5 | ≤1.3 | ≥70 | SMA/N |
| SDX-330-520-50-5 | dot | ≥4.6 | ≤1.5 | ≤1.3 | ≥70 | N |
| SDX-330-360-50-5-10 | 5 | ≥10 | ≤1.5 | ≤1.3 | ≥70 | SMA/N |
| SDX-360-400-50-4-10 | 4 | ≥10 | ≤1.5 | ≤1.3 | ≥70 | SMA/N |
| SDX-400-520-50-3-10 | 3 | ≥10 | ≤1.5 | ≤1.3 | ≥70 | SMA/N |
| Model rules: product category SDX-LO starting frequency-HI ending frequency-average power-operating bandwidth-transmitting and receiving interval-version number | ||||||
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