A small-sized six-element duplex bandpass filter is designed to provide resolution of the transmitted and receiving channels in duplex communication systems with frequency division of signals. Combining small footprint, low loss, low spacing and selectivity, this duplexer is well suited for medium power repeaters where small physical size and cost considerations are key where standard continuous power is used. 50 W, as well as in duplex subscriber radio stations.

Structurally, it is made on six high-quality coaxial resonators (spiral resonators for the model with a cross-section of 1" in the cross-section according to the rizhator scheme, which makes it possible to realize the small external dimensions of the duplexer without degrading the insulation parameters of the duplex channels. Temperature stabilization is achieved through the use of appropriate materials and a temperature-compensated design solution. The humators are made of extruded passive aluminum, the chassis is galvanized steel, the cables and connectors are teflon insulated, and they are available in both unpainted and painted (black) versions.

Characteristics:

• Frequency band: 400 - 470 MHz
• Power: 50W
• Type of connectors: BNC
• Number of filters: 6
• Input impedance: 50 ohms
• Frequency spacing (reception-transmission), 4-15 MHz