Duplex FiltersDPF 2/33-250-WM

Duplex Filter for the 150 MHz Band

Description

  • High power base station duplex filter for the 140 - 175 MHz range.
  • The use of large ø250 mm cavities means a high Q, resulting in a very narrow duplex spacing.
  • The large dimensions also mean a high power rating.
  • Unloaded Q of a single cavity is approx. 8000.
  • High frequency stability on temperature and power.
  • Suitable for Wall Mounting (WM) by opening the Duplexer and have all 6 cavities in a row, so they can be attached with screws through the brackets and into the wall.

Specifications

Electrical
Model DPF 2/33-250-WM
Frequency 140 - 175 MHz
Max. Input Power 300 W @ 1.5 dB IL
150 W @ 3.0 dB IL
Insertion Loss 250 kHz @ < 2.0 dB
500 kHz @ < 1.5 dB
750 kHz @ < 1.0 dB
Tx Noise Suppression on Rx-Freq. / Rx Isolation on Tx-Freq. 250 kHz @ > 80 dB
500 kHz @ > 90 dB
750 kHz @ > 100 dB
Mechanical
Connection(s) N(f)
Dimensions 510 x 750 x 600 mm /
20.07 x 29.52 x 23.62 in.
Weight Approx. 19.2 kg / 42.33 lb.
Environmental
Operating temperature range -30 °C to +60 °C
Frequency Stability Approx. 1.5 ppm / °C

Diagram and Mounting

TYPICAL RESPONSE CURVES FOR 500 kHz DUPLEX

Ordering Designations

Model Product No.
DPF 2/33-250-WM 200001877

Typical response curve for 500 kHz Duplex

DPF 2!33 250 WM Curve