DPF 900/6

6-Cavity Duplexer for the 900 MHz Band

Description

The DPF 900/6-… is a 6-cavity duplex filter for duplex radiotelephones operating in the 900 MHz band.
The DPF 900/6-… can be tuned within the 780 – 960 MHz band with a nominal duplex separation of 45 MHz. The duplexer can, however, be especially delivered to work with duplex separations down to 10-15 MHz.
The DPF 900/6-… is primarily intended for equipment which the Tx and Rx operate on single frequencies, but it can also, however 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 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 rigid coaxial cables and in the connectors.
The filter is coated with black vinyl to prevent corrosion.

Specification

Electrical
Model	DPF 900/6-…
Frequency	780 – 960 MHz
Max. Input Power	50 W
Special spec. info	Single-channel tuned :Multi-channel tuned BW = 5 MHz :
Insertion Loss Tx-Ant and Ant-Rx	10 – 15 MHz : ≤1.5 dB45 MHz : ≤1.0 dB
Tx Noise Suppression on Rx Frequency	> 85 dB> 60 dB
Isolation Rx on Frequency Tx	> 85 dB> 60 dB
Impedance	50 Ω
Duplex Spacing	10 – 15 or 45 MHz (norm.)
VSWR	< 1.5:1

Environmental
Frequency Stability	Approx. 4.5 ppm / °C
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	158 x 154 x 33 mm / 6.2 x 6.1 x 1.3 in.
Weight	Approx. 0.85 kg / 1.87 lb.

Ordering Codes

Model	Product No.
6-Cavity Duplexer for the 900 MHz Band	200000461

Diagrams

TYPICAL RESPONSE CURVES FOR 10 MHz DUPLEX SPACING

TYPICAL RESPONSE CURVES FOR 45 MHz DUPLEX SPACING

PROCOM A/S reserves the right to amend specifications without prior notice

PROCOM A/S • Smedetoften 12 DK 3600 Frederikssund • Denmark

Generated : 2026-06-25 Version 1