Product Overview
The VHF Directional Coupler (138-960MHz) is a high-power passive component designed for precision signal monitoring and distribution across 2G/3G/4G/LTE frequencies. Engineered for Public Safety systems and In-building Solutions (IBS), it offers a wide range of coupling values with low insertion loss and high isolation. Its robust 200W average power handling and distinctive red housing make it a reliable choice for mission-critical communication infrastructures.
Technical Specifications
| Model No. | MDC-VHF-XX-NF (XX means coupling in dB) | ||||||||
| Freq(MHz) | 138-960 | ||||||||
| Coupling(dB) | 3 | 4.8 | 6 | 7 | 8 | 10 | 13 | 15 | 20 |
| Accuracy(dB) | ±1.3 | ±1.4 | ±1.5 | ±1.7 | ±1.8 | ±2.0 | ±2.0 | ±2.0 | ±2.0 |
| Insertion Loss(dB) | ≦3.65 | ≦2.20 | ≦1.75 | ≦1.45 | ≦1.35 | ≦0.90 | ≦0.70 | ≦0.50 | ≦0.4 |
| Isolation(dB) | ≧18 | ≧19 | ≧21 | ≧22 | ≧23 | ≧25 | ≧28 | ≧30 | ≧35 |
| VSWR / Power | VSWR: ≤1.30 | Power: 200W (average) | |||||||
| Connector / Color | N-female | Red | |||||||
| Application / Temp | IP60 | -35~+65 (deg) | |||||||
| Size / Weight | 344*40*19 mm | 1.0 kg | |||||||
NOTE: All technical parameters can be adjusted as per the customer's requirement. Our company offers a wide variety of RF passive components to choose from.
Frequently Asked Questions
- Q1: Why is this directional coupler ideal for Public Safety systems?
- A: Public Safety networks often operate in the VHF/UHF bands. This coupler’s wide frequency range (138-960MHz) and high 200W power handling make it perfect for ERRC (Emergency Radio Communication) and mission-critical signal distribution.
- Q2: How does the coupling value (e.g., 6dB vs 20dB) affect the signal distribution?
- A: It dictates the power ratio. For example, a 20dB coupler has a very low insertion loss (≦0.4dB), ensuring the main signal continues with minimal loss, whereas a 6dB coupler directs more power to the coupled port for local antenna coverage.
- Q3: What are the benefits of the IP60 Indoor rating and N-female connectors?
- A: The IP60 rating provides dust protection for indoor In-building Solutions (IBS). Standard N-female connectors ensure high compatibility and low VSWR (≤1.30) across all commercial 2G/3G/4G network equipment.
- Q4: Does the company provide technical support for custom OEM projects?
- A: Yes, we provide 24-hour professional skill support. Our engineers can assist with OEM services to modify technical specs, connector types, or housing colors to ensure the product perfectly fits your specific network requirements.
Structural Dimensions Diagram
