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General Radio 874 Coupling Elements () Main Features and Specifications

Product Specs

  • Status -

A GR874 tee is used for connecting stubs and other elements in shunt with a coaxial line.

  • 874-T non-locking, 874-TL locking
  • Input voltage: Up to 1500 Vpeak
  • Impedance: 50 Ω

A GR874 power divider is a coaxial tee with a 16.67 Ω resistor in each leg, connected so that the tee is matched at any port when the other two ports are terminated in 50 Ω loads. The match holds throughout the wide frequency range. There is 0° phase difference between the outputs. The use of stable deposited carbon film resistors and the linear SWR frequency relationship make these power dividers particularly valuable for pulse work and in network analyzer applications.

  • 874-TPD non-locking, 874-TPDL locking
  • Frequency: dc to 7 GHz, dc to 9 GHz if locked
  • Impedance: 50 Ω
  • Insertion loss: 6 dB (+2, -0.5 dB), input to each output

The GR874 90° ell is a convenient right-angle line section.

  • 874-EL non-locking, 874-EL-L locking
  • Input voltage: Up to 1500 Vpeak
  • Impedance: 50 Ω

The GR874 u-line section is a coaxial line section in the shape of a U that is useful in many coaxial setups.

  • 874-U, u-line section, non-locking
  • Impedance: 50 Ω

    The GR874 rotary joint is used when one part of a coaxial system must be rotated with respect to another part. Not for motor-driven applications.

    • 874-JR non-locking
    • Frequency: dc to 4 GHz
    • SWR: <1.06 at 1 GHz, <1.3 at 4 GHz
    • Impedance: 50 Ω

    The GR874 coupling capacitor consists of a short length of coaxial line with a disk capacitor in series with the inner conductor. High frequencies are transmitted with small reflections, but dc and low audio frequencies are blocked.

    • 874-K non-locking, 874-EL-KL locking
    • Frequency: To 4 GHz
    • Capacitance: 4700 pF, -20 +50%, series
    • SWR: <1.06 at 1 GHz, <1.15 at 2 GHz, <1.3 from 2 to 4 GHz
    • Impedance: 50 Ω
    • Input voltage: Up to 500 Vpeak