DPX3 series 1
Satellite-IF / TV Diplexers DPX3 series
Wideband, up to 2.3 GHz
Flat Passband
Low Loss
High Rejection
Excellent Return Loss
High Stability
Die-casting Housing
High RFI Shielding
Good Connector Thread
Good Plating Quality
Good Weather Resistance
 Item DPX3 - 806 / 950
  Impedance 75 ohm
  Frequency Range 10 - 806MHz 950 - 2300MHz
  Insertion Loss 0.5dB (typ) / 2.0dB (max) 0.5dB (typ) / 2.0dB (max)
  Return Loss 16dB (typ) / 12dB (min) 15dB (typ) / 10dB (min)
  Rejection (Isolation) 40dB (typ) 40dB (typ)
  Power Passing DC +30V / 500mA (max)
  Dimensions 30(H) x 62(W) x 38(D) mm
  Net Weight 65g
 * Specifications may be change depending on the model or customer's requirement.

In satellite reception systems, sometimes use a diplexer to combine or separate the satellite-IF and CATV or TV's VHF/UHF signals in order to reduce accessories and coaxial cable used (see illustration).

This will affect the signal quality and even generate interference if a poor quality diplexer is used.

The DPX3 series is a vertical-port type, wideband, high performance indoor diplexers. It offers many features:

1. Lowest insertion loss: VHF/UHF band through-loss <1.0dB and satellite-IF band through-loss <1.5dB, reduced the insertion loss to absolute minimum.

2. Excellent return loss: Better than 14dB is essential for VHF/UHF and satellite-IF bands to provide a good impedance match so as avoid an increased in noise and to reduce signal loss to keep the signal clean.

3. High rejection: Better than 35dB provides a good isolation and avoids interference.

4. Closed cover panel and thick die-casting housing provides very good RFI shielding performance.

In addition to the general models in the table below, the TV/ CATV and satellite-IF bands can be designed according to customer specifications.

For more diplexer products, please see our diplexer category.

Model TV/ CATV Band Satellite-IF Band
DPX3-806/950 5 - 806 MHz 950 - 2300 MHz
DPX3-862/950 5 - 862 MHz 950 - 2300 MHz
DPX3-1218/1350 5 - 1218 MHz 1350 - 2300 MHz