Duplex FiltersDPF 70/55-...-TETRA-N

10-Cavity Duplexer for TETRA Band

Description

  • The DPF 70/55-...-TETRA-N is a 2 x 5 cavity filter for duplex radio telephones.
  • The filter uses full-length ¼ λ cavities in a compact, extruded aluminium housing. The chassis is made of passivated steel, and teflon insulation has been applied in the coaxial cables and in the connectors.
  • The filter is coated with black vinyl to prevent corrosion.

Specifications

Electrical
Model DPF 70/55-...-TETRA-N
Frequency Tx : 380 - 420 MHz
Rx : 390 - 430 MHz
(depends on model)
Max. Input Power 50 W
Pass Band Insertion Loss < 1.5 dB (typ. 1.3)
Impedance 50 Ω
VSWR < 1.5:1
Stop Band Attenuation > 60 dB
Mechanical
Connection(s) N(f)
Dimensions 247 x 129 x 58 mm / 9.72 x 5.08 x 2.28 in. (excl. conn.)
Weight Approx. 1.4 kg / 3.09 lb.
Environmental
Operating temperature range -30 °C to +60 °C
Frequency Stability 4.5 ppm/° C (approx.)

Diagram and Mounting

TYPICAL RESPONSE CURVES

Ordering Designations

Model Product No. Frequency
DPF 70/55-1-TETRA-N 200000341 Tx: 380 - 385 MHz / Rx: 390 - 395 MHz
DPF 70/55-2-TETRA-N 200000348 Tx: 385 - 390 MHz / Rx 395 - 400 MHz
DPF 70/55-3-TETRA-N 200000347 Tx: 410 - 415 MHz / Rx: 420 - 425 MHz
DPF 70/55-4-TETRA-N 200000342 Tx: 415 - 420 MHz / Rx: 425 - 430 MHz