140-174 MHz Pass/reject duplexer DPR8-4V, DPR8-6V


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Electrical specifications

Model DPR8-4V DPR8-6V
Operating Frequency band, MHz 140-174
Insertion loss (adjustable) not more, dB 1,5 2,2
Frequency separation TX/RX (min), MHz 0,5 0,275
Impedance, Ohm 50
Isolation, not less, dB 80 95
VSWR, not more than 1,5
Input power, not more, W not more than 300
Temperature Range, °C from -30 to +60
Cavity electrical length 1/4λ

Mechanical specifications

Model DPR8-4V DPR8-6V
Diameter, mm (ins.) 206 (8")
Weight, kg 14,2 21,7
Connector N-female
Mount to rack yes yes
Dimensions (LxWxH), mm 480x420x800 480x640x800

Duplexer DPR8-4V assembled from high-Q 8-inch diameter cavities by band pass-reject scheme. It has three level of adjustment: frequency, separation TX/RX value, rejection and pass level. It’s designed to provide full-duplex operation for one antenna of repeater or radio station with high power output. Used commonly under nonstandard frequency separation conditions. Implemented temperature compensating (thermostable) techniques enable to use the device in not heated locations. Duplexer attachment points enable to mount it into standard 19-inch repeater rack. DPR8-4(6)V provides duplex operation at lower frequency separation, unlike duplexers assembled on 5-inch cavities

Typical duplexers response curves



The information provided on this page is not an official offer.
To verify actual parameters contact the sales department before ordering.