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MPX 70/44 380-EXT

Mini-Duplex for the extended TETRA Band
Description
  • The version MPX 70/44 380-EXT is a 8-resonator small size Duplex Filter. It is especially developed for duplexing into one antenna the Tetra Public Safety extended band together with e.g. the Public Safety DMO (Direct MOde) frequency range 406 – 410 MHz, or together with the private Tetra networks e.g. in the freq. range 415 – 430 MHz.
  • This compact “miniplexer” meets the demand for a modern, space saving, high performance filter.
  • Overall the duplexer MPX 70/44 is available in a variety of different versions depending on duplex spacing, frequency, bandwidth and attenuation. Please ask Customer Service for availability.
  • The MPX 70/44 models are tunable within the frequency range 380 – 470 MHz The miniaturization of the filter has been realized by using special high-Q, temperature compensated helical resonators.
  • The housing is made of extruded aluminium, the chassis of steel, and teflon insulation has been applied in the rigid coaxial cables and in the connectors.
  • MPX 70/44 380-EXT is coated with black vinyl to prevent corrosion.
Specification
Electrical
Model
MPX 70/44 380-EXT/406-410MPX 70/44 380-EXT/415-430
Frequency
380 – 396.5 MHz / 406 -410 MHz380 – 396.5 MHz / 415 -430 MHz
Max. Input Power 25 W
Insertion Loss Tx-Ant and Ant-Rx ≤ 1.5 dB
Impedance 50 Ω
Isolation Tx-Rx ≥ 60 dB
VSWR < 1.5:1
Bandwidth
Low : 16.5 MHz
High : 4.0 MHzLow : 16.5 MHz
High : 15.0 MHz
Environmental
Operating temperature range -30 °C to +60 °C
Mechanical
Connection(s) N(f)
(BNC(f), TNC(f), UHF(f) or SMA(f) on request)
Historic Brand Amphenol Procom
Dimensions 143 (excl. conn.) x 104 x 56 mm / 5.63 x 4.10 x 2.20 in.
Weight Approx. 0.7 kg / 1.54 lb.
Ordering Codes
Model Product No. Frequency

MPX 70/44 380-EXT/406-410

 200002903 380 – 396.5 MHz / 406 – 410 MHz

MPX 70/44 380-EXT/415-430

 200002930 380 – 396.5 MHz / 415 – 430 MHz
Additional Information
Typical response curve for 406 – 410 MHz

MPX 70!44 380 EXT!406 410 Curve

Typical response curve for 415 – 430 MHz

MPX 70!44 380 EXT!415 430 Curve

Mounting Details

MPX 70!44 380!406 410 TETRA N Holeplacing

All dimensions are given in mm [in.]

PROCOM A/S reserves the right to amend specifications without prior notice
PROCOM A/S • Smedetoften 12 DK 3600 Frederikssund • Denmark
Generated : 2026-06-26 Version 1