Preparing your datasheet

PRO-ISO-PHY-TETRA-S4

Four-TETRA-Station Combiner
Description
  • The PRO-ISO-PHY-TETRA-S4 combiner provides the possibillity of connecting up to four TETRA radios into one common antenna.
  • The PRO-ISO-PHY-TETRA-S4 models are available in the frequency range 380 – 470 MHz (on request).
  • All PRO-ISO-PHY units are designed for single carrier signal per port and thus it is not recommended to add a multiple carrier signal on the input ports, as this could potentially create unwanted intermodulation products transmitted on the antenna port and reflected on the input ports.
  • ETSI compliant connection of four digital radios.
  • The PRO-ISO-PHY-TETRA-S4 is the successor to the PRO-ISO-PHY-TETRA-4.
  • The PRO-ISO-PHY-TETRA-S4 has improved isolation between the ports – more than 62 dB – and lower insertion loss.
  • The use of high-quality system components such as highly selective helical duplex filters and high-performance isolators provides high isolation and secure communication.
  • The smallest and most compact design on the market.
  • Suitable for both stationary and mobile use.
  • Also available in tray for 19″ rack mounting.
  • Vibration and shock tested in accordance with EN-60068

  • Tested in accordance with:
    Vibration test: EN 60068-2-64, test specification: EN 300 019-2-5 V3.0.0.
    Shock test: EN 60068-2-27, test specification: EN 300 019-2-5 V3.0.0.
    Bump test: EN 60068-2-29, test specification: EN 300 019-2-5 V3.0.0.

     

Specification
Electrical
Model PRO-ISO-PHY-TETRA-S4
Frequency
Tx : 380 – 385 MHz
Rx : 390 – 395 MHzTx : 410 – 415 MHz
Rx : 420 – 425 MHzTx : 415 – 420 MHz
Rx : 425 – 430 MHz
Type TETRA combiner
Max. Input Power 25 W per port
Insertion Loss Tx-Ant. < 9.0 dB
Insertion Loss Rx-Ant. < 9.0 dB
Isolation TRx – TRx Tx – Tx : > 60 dB
Rx – Rx : > 60 dB
Tx – Rx / Rx – Tx : > 60 dB
VSWR < 1.5:1
Group Delay Variation Tx-ANT. < 120 nsec.
Rx-ANT. < 150 nsec.
No. of channels 4
Environmental
Ingress Protection IP62
Mechanical
Connection(s) N(f)
Colour Black
Historic Brand Amphenol Procom
Dimensions 150 (excl. conn.) x 250 x 35 mm / 5.91 (excl. conn.) x 9.84 x 1.38 in.
Weight Approx. 2.4 kg / 5.29 lb.
Ordering Codes
Model Product No. Frequency

PRO-ISO-PHY-385/390-S4-N(f)

 210002202 380 – 385 MHz / 390 – 395 MHz

PRO-ISO-PHY-415/420-S4-N(f)

 210002203 410 – 415 MHz / 420 – 425 MHz

PRO-ISO-PHY-420/425-S4-N(f)

 210002371 415 – 420 MHz / 425 – 430 MHz
Additional Information
Please Note

* The frontplates are delivered in a seperate packaging with extra screws for mounting on the combiner.

Typical Attenuation Values

PRO ISO PHY TETRA S4 insloss GB

Connection Diagram

PRO ISO PHY TETRA S4 connection diagram

Mounting Details

PRO ISO PHY TETRA S4 hole placing

All dimensions are given in mm.

19″ Front plate with connectors in front (210002204)

19″ Front plate with connectors in back (210002205)

PROCOM A/S reserves the right to amend specifications without prior notice
PROCOM A/S • Smedetoften 12 DK 3600 Frederikssund • Denmark
Generated : 2026-06-27 Version 1