Antenna Duplexers
 
 

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Antenna Duplexers
These antenna duplexers are designed to connect two transmitters or a transmitter and a receiver with one antenna at minimal power loss for transmitter output and receiver input.
Common specifications
Impedance 50[
V.S.W.R. 1.3 Max.
Max. input power 30W Max.
Operating temp. -10XC to +50XC
Helical Resonator Type
Model Frequency Insertion
Loss
(dB)
Band
Width
(MHz)
ft,fr
Separation
Attenua-
tions
(dB)
Connec-
tions
SFH 507 Appointed ft/fr in 54 to 76MHz 1.5 - 2MHz 70 N-J
SFH 508 Appointed ft/fr in 140 to 170MHz 3MHz 30 at fo
20MHz
Dielectric Resonator(TEM mode) Type
Model Frequency Insertion
Loss
(dB)
Band
Width
(MHz)
ft,fr
Separation
Attenua-
tions
(dB)
Connec-
tions
SFD 525 Appointed ft/fr in 140 to 170MHz 1.5 - 4MHz
Min.
70 BNC-J
SFD 526 Appointed ft/fr in 360 to 470MHz 12MHz
Min.
Coaxial Resonator Type
Model Frequency Insertion
Loss
(dB)
Band
Width
(MHz)
ft,fr
Separation
Attenua-
tions
(dB)
Connec-
tions
SFC 510 Appointed ft/fr in 800 to 960MHz 1 10 48MHz
Min.
70 N-J
SFC 511 Appointed ft/fr in 1.4 to 1.5GHz