CY309 High Band VHF Switchless Combiner

Any High Band VHF Channel 174 to 250 MHz
2 x 10 kW average power

The Switchless Combiner system consists of two 3 dB hybrid couplers and a motorized, 3-postion phase-shifter. The combiner system is fully integrated and resides in an aluminum floor-mount base frame. The input, output, and load connections are all vertical 3-1/8-inch, 50-ohm EIA flanged connections. Test/reject load is customer supplied.

Switchless Combiner Modes:
A to Air and B to Load
B to Air and A to Load
A + B to Air

CY309 Switchless Combiner includes:
  • (2 each)
    3-dB Coaxial Hybrid Coupler
  • (1 each)
    Motorized, 3-position Coaxial Phase Shifter (0, 90, 180 degrees)
  • (1 each)
    1-port Directional Coupler, 3-1/8-inch (at reject load port)
  • (1 each)
    1-port non-directional Voltage Probe (at reject load port)
  • Interconnect components between above items
  • Floor-mount base frame
  • Switchless Combiner System does not include Reject Load

CY309 Product Specifications

  • Input Power:
    2 x 10 kW average power, ATSC 1.0
  • Output Power:
    20 kW Average, ATSC 1.0
  • Frequency:
    174 to 250 MHz
  • Tuned to designated 6, 7 or 8 MHz RF channel
  • Input Connectors:
    3-1/8-inch, 50-ohm, EIA Flanged Male
  • Output Connectors:
    3-1/8-inch, 50-ohm, EIA Flanged Male
  • VSWR:
    1.08 : 1 or better over channel
  • 1.15 : 1 or better over channel (during changeover)
  • Insertion Loss:
    0.20 dB max over channel
  • Input Isolation:
    30 dB min. over channel
  • Coupler Directivity:
    32 dB min. over channel
  • AC Power:
    120 VAC, 60Hz, < 600VA
  • DC Control Power:
    12 VDC, 75 MA
  • Ambient Temperature:
    14 to 122 degrees F (-10 to 50 degrees C)
  • Ambient Humidity:
    0 to 95% Relative, non-condensing
  • Altitude:
    0 to 5,000-feet AMSL (0 to 1,524-meters AMSL)

CY309 Outline Drawing

CY309 High Band VHF Switchless Combiner Product Brochure