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PRO-PHY450-3

Hybrid CombinersPRO-PHY450-3

3-Channel Hybrid Combiner for 450 MHz Transmitters

Description

  • Combining three transmitters or receivers on the same antenna.
  • Better utilisation of good antenna position.
  • Three antennas on the same transmitter or receiver.
  • The only combining option with very small Tx-Tx frequency spacing.
  • 30 W load supplied (other loads or no load as option).

Specifications

Electrical
Filter Type Hybrid Junction
Frequency 380 - 475 MHz (see ordering)
Max. Input Power 45 W per channel (max. 150 W with larger load)
Insertion Loss < 5.3 dB ±0.3 dB @ 11 MHz BW
< 5.5 dB ±0.3 dB @ 22 MHz BW
Impedance 50 Ω
Isolation Tx1 - Tx2 > 26 dB @ 11 MHz BW
> 25 dB @ 22 MHz BW
(* see note)
VSWR < 1.5:1 with all other ports terminated with 50 Ω
Load 30 W load fitted (other ratings available)
(** see note)
No. of channels 3
Mechanical
Connection(s) N(f) (other on request)
Dimensions 400 x 89 (incl. conn.) x 42 mm (excl. load) / 15.75 x 3.50 x 1.65 in.
Weight Approx. 1.3 kg / 2.87 lb. (excl. load)
Environmental
Operating temperature range -30 °C to +60 °C

Diagram and Mounting

Typical response curve

Mounting details

All dimensions are given in mm [in.] All dimensions are given in mm [in.]

Ordering Designations

Model Product No. Frequency
PRO-PHY450-3-1 210000540 395 - 410 MHz
PRO-PHY450-3-2 210000595 405 - 420 MHz
PRO-PHY450-3-3 210000557 415 - 430 MHz
PRO-PHY450-3-4 210000654 425 - 440 MHz
PRO-PHY450-3-5 210000733 435 - 450 MHz
PRO-PHY450-3-6 210000621 445 - 460 MHz
PRO-PHY450-3-7 210000575 455 - 470 MHz
PRO-PHY450-3-8 210000576 465 - 480 MHz

Note

* The isolation between the Tx ports is directly dependent on the terminating VSWR on the antenna port. With an antenna load VSWR = 1.5, the isolation between the two Tx ports will be reduced to 20 dB @ 5 MHz bandwidth.

** The VSWR of the load’s should be < 1.1! Each load should be able to dissipate 2/3 of the input power. E.g.: With 50 W input, each load should be able to dissipate 50 W x 2/3 = 33 W.

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