140-174 MHz Narrowband duplexers DPF8-4V, DPF8-6V


Please visit our partner in EU
Internet shop www.duplexers.eu
Catalog www.ik-telecom.com



Electrical specifications

Model DPF8-4V DPF8-6V
Operating Frequency band, MHz 140-174
Insertion loss (adjustable) not more, dB 1,5 2
Frequency separation TX/RX (min), MHz 3,5 1,5
Impedance, Ohm 50
Isolation, not less, dB 55 63
VSWR, not more than 1,5
Input power, not more, W not more than 300
Temperature Range with garanted stabilization, °C from -30 to +60
Cavity electrical length 1/4 λ

Mechanical specifications

Model DPF8-4V DPF8-6V
Diameter, mm (ins.) 206 (8")
Weight, kg 14 21,3
Connector N-female
Mount to 19-inch rack yes yes
Length/Width/Depth, mm 800x480x420 800x650x420

8-inch cavities with higher Q-factor are used when duplexer, assembled on 5-inch cavities, unable to provide appropriate isolation because of low frequency separation TX/RX. Increase in the number of cavities (in duplexer DPF8-6V case) leads to gain slope increase and to decrease of receiver desensitization.

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.