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DPF 2/6-150

Duplex FiltersDPF 2/6-150

6-Cavity Base Station Duplexer for the 160 MHz Band

Description

  • The DPF 2/6-150... is a 6-cavity high-power, base-station duplex filter for the frequency band 138 - 175 MHz.
  • The duplexer is delivered in two basic models:
    Model DPF 2/6-150 L can be tuned within the band 138 - 156 MHz and model DPF 2/6-150 H within the band 152 - 175 MHz, both with a nominal duplex separation of 4.5 MHz.
  • This filter type uses enlarged (40 x 40 mm), full quarter-wavelength cavities with silver-plated, temperature compensated resonator elements. The high Q’s obtainable in these cavities enable the filter to work with very narrow duplex spacing while at the same time keeping low insertion losses. Further, duplex isolation is improved at medium spacings.
  • The enlarged dimensions also improve the power-handling capability of the filter as insulation distances at high-voltage points are increased, and the inevitable power dissipation (which always will be present though insertion loss is kept to a minimum) will be distributed over a larger area. The filter is capable of working continuously at a power level of 150 W.
  • The DPF 2/6-150… is primarily intended for equipment, where the Tx and Rx operate on single frequencies, but it can also, with slightly reduced data, be used where the Tx and Rx operate on several channels, i.e. within a certain port bandwidth. In the last case, factory-tuning is recommended.
  • The housing is made of extruded aluminium, the chassis of passivated steel, and the rigid coaxial cables and the connectors are provided with teflon insulation.
  • DPF 2/6-150... is coated with black vinyl to prevent corrosion.

Specifications

Electrical
Model DPF 2/6-150...
Frequency DPF 2/6-150 L : 138 - 156 MHz
DPF 2/6-150 H : 152 - 175 MHz
Max. Input Power 150 W
Special spec. info Single-channel tuned: Multi-channel tuned,
BW = 1.5 MHz:
Insertion Loss Tx-Ant and Ant-Rx < 1.2 dB (typ. 1.0 dB) < 1.4 dB (typ. 1.2 dB)
Tx Noise Suppression on Rx Frequency > 80 dB > 60 dB
Isolation Rx on Frequency Tx > 80 dB > 60 dB
Impedance 50 Ω
Duplex Spacing 1 - 10 MHz
VSWR ≤ 1.5:1
Mechanical
Connection(s) N(f)
(BNC(f), TNC(f), UHF(f) or SMA(f) on request)
Dimensions 519.5 (excl. conn.) x 250 x 50 mm /
20.45 (excl. conn.) x 9.84 x 1.97 in.
Weight Approx. 4.5 kg / 9.92 lb.
Environmental
Operating temperature range -30 °C to +60 °C
Frequency Stability Approx. 4.5 ppm / °C

Diagram and Mounting

Typical Response curves @ 1.6 MHz Duplex Spacing

Typical Response curves @ 4.5 MHz Duplex Spacing

Mounting Details

All dimensions are given in mm [in.] All dimensions are given in mm [in.]

Ordering Designations

Model Product No. Description Frequency
DPF 2/6-150L-1/2 N 200000204 SPACING: 1 - 2 MHz 138 - 156 MHz
DPF 2/6-150L-2/4 N 200000216 SPACING: 2 - 4 MHz 138 - 156 MHz
DPF 2/6-150L-4/6 N 200000209 SPACING: 4 - 6 MHz 138 - 156 MHz
DPF 2/6-150L-6/8 N 200001863 SPACING: 6 - 8 MHz 138 - 156 MHz
DPF 2/6-150L-8/10 N 200001864 SPACING: 8 - 10 MHz 138 - 156 MHz
DPF 2/6-150H-1/2 N 200000199 SPACING: 1 - 2 MHz 152 - 175 MHz
DPF 2/6-150H-2/4 N 200000198 SPACING: 2 - 4 MHz 152 - 175 MHz
DPF 2/6-150H-4/6 N 200001648 SPACING: 4 - 6 MHz 152 - 175 MHz
DPF 2/6-150H-6/8 N 200001649 SPACING: 6 - 8 MHz 152 - 175 MHz
DPF 2/6-150H-8/10 N 200000189 SPACING: 8 - 10 MHz 152 - 175 MHz

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