WISCO International (Decibel Tx Accessories)

Hybrid Coupler for Compact Combiners DB4376

An external resistive load capable of dissipating half the power of tow transmitters must be connected to the load port. With a matched antenna load and a matched resistive load, the hybrid will provide over 40 dB isolation between the transmitter connected to the input ports. The tunable L.C. network at the antenna output port allows the hybrid to be matched to a slightly mismatched antenna system with a VSWR of up to 1.5 to 1.

Z-Matchers

These allow transmitters to operate at maxi-mum efficiency by matching the source impedance (transmitter output impedance) to the load impedance (antenna, duplexer, isolator, etc.)

Harmonic Filters for IM Protection

For proper intermodulation protection, most systems require this type of filter between the isolator and antenna (or hybrid) to reject second and third harmonic transmitter energy.

Terminations for Low VSWR

These absorption type coaxial load resistors provide the stable 50-Ohm termination and extremely low VSWR required by hybrids and circulators/isolators. Five models are offered. The 15, 30, 100, 150 and 300 Watt loads are dry (air) dielectric units that can be mounted in any position.