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The NGT-CX-2-300 2x300W FM Full Bridge Combiner is designed for FM broadcasting systems operating at 87–108MHz. Featuring a full bridge structure, it combines two 300W inputs with low insertion loss (≤0.65dB at ±300kHz) and high port isolation (≥30dB). Built with silver-plated brass and aluminum alloy, it ensures reliability under ≤350W input power. The compact, temperature-compensated design operates stably in harsh conditions (-10°C to +55°C) and includes a broadband port for future expansion. Ideal for multi-frequency setups requiring minimal signal degradation and robust thermal performance.
Constructed with premium materials including purple copper, silver-plated brass, and high-quality aluminum alloy for durability and performance.
Full bridge structure with integrated filtering, ensuring low insertion loss (≤0.6dB) and VSWR (≤1.09).
High isolation (≥30dB) between narrowband and broadband ports for minimal signal interference.
Compact design with temperature compensation, maintaining stability across -10°C to +55°C environments.
Supports expansion via reserved broadband port, enabling multi-frequency scalability up to 350W input power.
Robust thermal management with ≤12°C temperature rise under full power operation.
| Multiplexer structure | Full bridge structure, the 2-way combiner includes 2 bridge units and reserves a broadband port. |
| Power level | 300W |
| Frequency range | 87 - 108MHz |
| Working frequency | Determine based on actual user needs. |
| Narrowbandmaximuminput power | ≥ 350W |
| Narrowband standing wave ratio | ≤ 1.09 |
| Narrowband bandwidth | 600kHz |
| Narrowband insertion loss and out of band selectivity | Single 2-way combiner unit. |
| Narrowband insertion loss and out of band selectivity | f0≤ 0.6dB |
| f0±300kHz ≤ 0.65dB | |
| For each additional level of the multiplexer, itsinsertion loss increases by no more than 0.09dB. | |
| Broadband maximum input power | ≤ 350W |
| Broadband standing wave ratio | ≤ 1.09 |
| Isolation from narrowband to broadband | ≥ 31dB(Frequency intervalmore than 1MHz) |
| Isolation from broadband to narrowband | ≥ 30dB(Frequency intervalmore than 1MHz) |
| Isolation from narrowband to narrowband | ≥ 30dB(Frequency intervalmore than 1MHz) |
| Isolation from narrowband to narrowband | ≥30dB(Frequency interval more than 1MHz) |
| Input port type(Up) | 7/16" (L29) female |
| Output port type(Up) | 7/8"EIA |
| Temperature coefficient | ≤1.5kHz/℃ |
| Full power temperature rise | ≤12℃ |
| Workenvironment | Temperature:-10℃-+55℃,Relative humidity:≤90%,Atmospheric pressure:86kPa-106kPa. |
