Product introduction
| Product introduction |
| BNC to BNC |
| Wire: RG233/U military-grade coaxial cable |
| Interface type: BNC |
| Wire length: 5cm~200cm (length can be customized) |
RG233/U Military Coaxial Cable Parameter Description
1. Core parameters
| Parameter | Typical value | Standard |
| Characteristic impedance | 50Ω | Full frequency band fluctuation <±1Ω |
| Outside diameter | 10.29mm (0.405 inches) | Double-layer shielding structure, the outer sheath is flame-retardant polyurethane |
| Central conductor | Silver-plated copper-clad steel (SCS) | Diameter 2.06mm, DC resistance ≤3.2 Ω/km |
| Insulating materials | Physical foamed polyethylene (PFPE) | Low dielectric loss, temperature-resistant -55°C~+125°C |
| Shielding layer | Double shielding structure | 1 Aluminum foil longitudinal wrap (100% coverage) 2 Tin-plated copper braided mesh (≥95% coverage rate) |
| Sheath | Flame-retardant polyurethane (FRPU) | MIL-DTL-17 certification, oil resistance/acid and alkali resistance |
| Frequency range | DC ~ 18 GHz | At 18GHz, VSWR≤1.35:1 |
| Weaken | Typical value: • 100 MHz: 0.7 dB/30m • 1 GHz: 2.3 dB/30m • 10 GHz: 8.5 dB/30m | 40% lower than ordinary RG58 (@1GHz) |
| Voltage standing wave ratio | ≤ 1.30:1 (0~10 GHz) ≤ 1.35:1 (10~18 GHz) | It needs to be used with N-type or TNC connectors. |
| Maximum working voltage | 2,500 Vrms (sea level) | The waterproof sheath can work at a depth of 100m. |
| Minimum bending radius | 82 mm (static) | Dynamic bending radius ≥165mm (repeated bending >500 times) |
| Operating temperature range | -55°C ~ +125°C | Instantaneous temperature resistance +200°C (30 minutes) |
| Propagation speed | 88% 光速 | Delay 4.9 ns/m |
| Shielding efficiency | ≥120 dB (1 GHz) | Beyond the requirements of MIL-STD-461F RE102 |
2. Compare with flexible cables
| Frequency | RG233 loss (dB/30m) | RG213 loss (dB/30m) | Advantage range |
| 400MHz | 1.5 | 2.8 | 46% |
| 2.4GHz | 4.2 | 7.1 | 41% |
| 6GHz | 6.8 | 12 | 43% |
3.典型适用场景
| Military radar: fire control system feeder (such as AN/SPY-1 ship-borne radar) |
| Satellite communication: ground station high-frequency jumper (C/X/Ku band) |
| Electronic Confrontation (ECM): Jammer Signal Transmission |
| Test instrument: vector network analyzer calibration line (below 18GHz) |
Selection guide
1. Commonly used adaptive cable specifications and characteristics
| Model | Outside diameter | Central conductor | 3GHz loss | Distinguishing feature | Applicable scenarios |
| RG-174 | 2.8mm | 7*0.16mm | 0.82dB/m | Flexible, Easy to install, Low cost | Consumer electronics |
| RG-316 | 2.6mm | 7*0.1mm | 0.84dB/m | High temperature resistance, Military industry standards | High-temperature environment, Test instruments |
| 微型发泡PE线 | 1.5~2.2mm | 0.3~0.5mm | 0.50dB/m | Low high-frequency loss | 5G/Wi-Fi |
| Semi-steel wire | 1.0~3.0mm | Solid copper | 0.30dB/m | Relatively stable and well shielded | Test calibration, Front segment of millimeter wave |
2. Key parameter comparison and selection logic
2.1 Priority of electrical performance
| Parameter | RG-174 | RG-316 | Foamed PE line | Affect |
| Attenuation @6GHz | 1.8dBm/m | 1.7dBm/m | 0.9dBm/m | High-frequency signal integrity |
| Shielding efficiency | 70dB | 90dB | >90dB | Anti-interference ability |
| Impedance stability | ±3Ω | ±2Ω | ±1Ω | Reflection signal suppression |
2.2 Mechanical and environmental adaptability
| Parameter | RG-174 | RG-316 | Foamed PE line |
| Minimum bending radius | 15mm | 25mm | 30mm |
| Temperature tolerance range | -40℃~+85℃ | -65℃~+200℃ | -50℃~+85℃ |
| Tensile strength | Medium | Tall | Low (easy to damage) |
3. Typical application scenarios and cable matching
| 3.1 Consumer electronic products (Bluetooth/Wi-Fi) |
| Cable: RG-174 |
| Reason: cost-sensitive, frequency ≤5GHz, short length (<0.3m) and controllable loss. |
| 3.2 Test instrument jumper (vector network analyzer) |
| Cable: RG-316 or low-loss foam cable (such as Times LMR-200) |
| Reason: It needs to be resistant to plugging and low loss (high calibration accuracy requirements). |
| 3.3 On-board radar/5G small base station |
| Cable: PTFE insulated foam cable (such as Gore G-FLEX 150) |
| Reason: 6~24GHz low loss demand, outer diameter ≤2mm convenient for wiring. |
| 3.4 Military equipment |
| Cable: RG-316 (military standard MIL-DTL-17) |
| Reason: Resistant to extreme temperature and vibration, high shielding requirements. |
4. Supplementary explanation
| 4.1 Outer diameter mismatch: MCX connectors usually support 1.0~3.0mm wire diameters, and need to be customized beyond the range (such as micro wires, special MCX heads are required). |
| 4.2 High-frequency loss: RG-174 is twice as high as foam PE wire at 6GHz, and long-distance transmission avoids use. |
| 4.3 Phase stability: For phase-sensitive applications (phased arrays), semi-rigid lines or phase-stable cables (such as Huber+Suhner S100) are preferred. |
| 4.4 Connector level: Gold-plated contact MCX (non-nickel-plated) is selected to ensure a life of >500 plugging and unplugging. |
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