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The JRC TL378A is a critical protection component used in the transceiver units of S-Band marine radar systems, such as the JRC JMA-9000 and JMR-5400 series. It serves as a Duplexer protection device, specifically designed to safeguard the sensitive receiver front-end (MIC/LNFE) from the high-power pulses of the radar’s own magnetron.
| Parameter | Value / Specification |
| Frequency Range | 3000 MHz to 3100 MHz (S-Band) |
| Peak Input Power | Up to 100 kW |
| Insertion Loss | 1.5 dB Max (ensures high sensitivity for weak targets) |
| Recovery Time | ≤ 2.0 μsec (affects minimum detection range) |
| Flat Leakage Power | 20 mW Max |
| Spike Leakage Energy | 400 mW Max |
| Interface | Waveguide (typically WR284) |
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