The Andrew Hybrid Tee Refectemeter test set (models 49000-90M-I, 48988-90M, 40501-90M, +42014-9) is a four-port RF signal manipulation device engineered for waveguide system characterization and fault diagnostics. The hybrid tee—also called a magic tee—splits and combines RF signals with controlled amplitude and phase relationships, enabling precise impedance measurement, reflection analysis, and fault location in high-frequency networks. Its symmetrical design delivers balanced performance across extended frequency ranges, making it essential for telecommunications infrastructure, radar systems, and electronic defense applications.
Technical Specifications
• Device Type: Hybrid Tee Refectemeter Test Set (four-port magic tee)
• Power Split: 3.2 ± 0.2 dB with tracking less than 0.3 dB
• Phase Balance: ±5°
• Isolation (E-plane to H-plane): Greater than 30 dB
• Isolation (Co-linear arms): Greater than 15 dB
• VSWR: 1.3:1 at mid-band; 1.5:1 at band edges (matched designs)
– Key Features
• Four-port architecture for signal splitting and combining
• Precise amplitude and phase control across wide frequency ranges
• High port-to-port isolation for reliable signal separation
• Low tracking error ensures consistent performance
• Aluminum construction with chromate finish for environmental protection
– Typical Applications
• Waveguide and RF system testing
• High-frequency telecommunications
• Radar and monopulse beam forming systems
• Electronic countermeasure equipment
• Vector network analyzer integration
• Power divider and combiner networks
• Bridge circuit implementations
• Balanced mixer and amplifier configurations
• High-power waveguide switch matrices
• Broadcasting and signal distribution infrastructure
– Compatibility & Integration
The modular design accommodates integration into complex RF measurement systems, vector network analyzers, and instrumentation setups requiring precise signal manipulation and phase control.
