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PRO-PHY85-3

Hybrid CombinersPRO-PHY85-3

3-Channel Hybrid Combiner for 85 MHz Transmitters

Description

  • Combining three transmitters or receivers on the same antenna.
  • Better utilization 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
Model PRO-PHY85-3
Filter Type Hybrid Junction
Frequency 68 - 88 MHz (see ordering)
Max. Input Power 45 W per channel (max. 150 W with larger load)
Insertion Loss < 5.2 dB ±0.3 dB @ 2 MHz BW
< 5.4 dB ±0.3 dB @ 4 MHz BW
Impedance 50 Ω
Isolation Tx1 - Tx2 > 26 dB @ 2 MHz BW
> 25 dB @ 4 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. loads)
/ 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-PHY85-3-1 210000785 67 - 71 MHz
PRO-PHY85-3-2 210000736 70 - 74 MHz
PRO-PHY85-3-3 210000549 73 - 77 MHz
PRO-PHY85-3-4 210000703 76 - 80 MHz
PRO-PHY85-3-5 210000737 79 - 83 MHz
PRO-PHY85-3-6 210000693 82 - 86 MHz
PRO-PHY85-3-7 210000694 85 - 89 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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