28-66-02A

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28-66-02A

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D-Star Solutions

28-66-02A, 442-450 MHz, Duplexer

  • TX RX Systems offers a wide variety of Duplexer options to suit your application, including Vari-Notch®, Bandpass, and notch type circuits
  • Vari-Notch® design provides low loss and high isolation in a compact package
  • All high RF-current components silver-plated for highest performance
  • Various models to choose from to match your application.

 

Notes
Specifications for duplexers of unsymmetrical construction or response are listed as follows:

  • Isolation: Noise Suppression/Carrier Suppression
  • Insertion Loss: Tx Loss/Rx Loss

 

D-STAR is a new ham radio system which offers digital voice and data communication. It connects repeater sites over the Internet and forms a wide area ham radio network. The DSTAR system provides a new capability and functionality to the ham radio world and increases the efficiency of emergency communications.

Where do TXRX systems products come in?
D-star systems are being configured all over the world. Sites may be comprised of VHF, UHF, 1.2 GHz or a complete system including all bands. TXRX offers various products to handle the signal management issues for these repeater site installations.

Duplexers for 28-37-02A (VHF), 28-66-02A (UHF) and 28-97-01A (1.2 GHz) as well as the new 36-97-07053-A, 1.2 GHz Triplexer which allows the use of a single 1.2 GHz antenna for the Tx, Rx, and a high-speed Data channels.

For sites in need of using only a single feedline for VHF/UHF, TX RX Systems manufactures Crossband Coupler models 80-05-06 and 80-05-07 handling up to 250W per band.


Downloads:

Manual


 

Product Specifications 
Item No28-66-02A
Item Name442-450 MHz, Duplexer
Frequency Range442-450 MHz
Minimum Freq Separation5.0 MHz
Power Rating350 W
Isolation100 dB
Insertion Loss0.6 dB
Number of Cavities4
Cavity Size4" Dia.
VSWR1.3:1
Impedance Ω50
Dimensions H x W x D5.25" x 19" x +3 -9"
Tx-Rx Port ConnectorsN
Antenna ConnectorsN
Temperature Range-40 to +80 °C
Shipping Weight14 lbs.

Compatible Devices:

 

Image of 136-174 Mhz Duplexers

28-37-02A
144-174 MHz, Duplexer

 

36-97-07053-A
1.2-1.3 GHz, Triplexer

Image of Duplexers

28-97-01A
1215-1300 MHz, Duplexer