to product finder
DPF 4/4 S-4/13

Duplex FiltersDPF 4/4 S-4/13

4-Resonator Duplexer for the 80 MHz Band

Description

  • The DPF 4/4 S-4/13 is a 4-resonator duplex filter for duplex radiotelephones.
  • This filter is primarily intended for equipment, where the Tx and the 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 duplexer can be tuned within the complete 66 - 88 MHz range with a duplex separation between 4 and 13 MHz.
  • The filter has very small physical dimensions owing to the use of high-Q, temperature compensated helical resonators with discrete-component interconnections.
  • The housing is made of extruded aluminium, the chassis of passivated steel, and the connectors are provided with teflon insulation.
  • The filter is black vinyl coated to prevent corrosion.

Specifications

Electrical
Model DPF 4/4 S-4/13
Frequency 66 - 88 MHz
Max. Input Power 50 W
Special spec. info Single-channel tuned : Multi-channel tuned,
BW = 1 MHz :
Insertion Loss Tx-Ant and Ant-Rx ≤ 0.8 dB ≤ 1.0 dB
Tx Noise Suppression on Rx Frequency > 70 dB > 40 dB
Isolation Rx on Frequency Tx > 60 dB > 40 dB
Impedance 50 Ω
Duplex Spacing 4 - 13 MHz (adjustable)
VSWR < 1.5:1
Mechanical
Connection(s) N(f)
(BNC(f), TNC(f), UHF(f) or SMA(f) on request)
Dimensions 173 x 104 x 33 mm / 6.81 x 4.09 x 1.28 in.
Weight Approx. 0.54 kg / 1.19 lb.
Environmental
Operating temperature range -30 °C to +60 °C
Frequency Stability Approx. 9 ppm / °C

Diagram and Mounting

MOUNTING

TYPICAL RESPONSE CURVES @ 4 MHz DUPLEX SPACING

Ordering Designations

Model Product No.
DPF 4/4 S-4/13 N(f) 200000225

Related products
Omni Antennas

Amphenol Procom offer Omni Antennas which are produced from quality materials for high performance and endurance in harsh environments. View our collection.

Explore all Omni Antennas
Cavity Combiners

RF Cavity Combiners by Amphenol Procom for Tx 150-300 W radio systems in 60-500 MHz. Standard products are 2 to 8 channels. Read more here.

Explore all Cavity Combiners
Receiver Multicouplers

RF Receiver Multicouplers small size 1HU by Amphenol Procom are delivered in 4-8 channels in the VHF- & UHF band 60-1000 MHZ. Read more here.

Explore all Receiver Multicouplers
Mounting Kits for Filters

Amphenol Procom provides Mounting Kits for a wide range of Multiplexers and Duplex Filters with repeater. Learn more of our product line here.

Explore all Mounting Kits for Filters
to product finder