Einführung in das Hauptprodukt
Diese 136-174MHz Directional Coupler is a cornerstone for high-reliability VHF communication systems. Built with a robust air-dielectric or high-grade cavity structure, it is designed to maintain electrical stability and high power resilience in 24/7 mission-critical environments. It provides a calibrated sampling port for real-time monitoring of RSSI, output power, and antenna health, making it indispensable for P25, TETRA, and DMR network optimization.
The device is optimized for the specific challenges of low-frequency RF engineering, featuring a high-isolation design that minimizes cross-port leakage. Its heavy-duty aluminum housing provides superior RF shielding and thermal management, ensuring that coupling values remain flat and accurate even under continuous high-load transmission. With multiple connector options including N-Typ und SMA, it integrates seamlessly into existing BTS cabinets and outdoor radio enclosures.
Warum dieses Produkt wählen?
- Critical Infrastructure Grade: Tailored for the 136-174MHz bands used by police, fire, and emergency medical services.
- Enhanced System Protection: Superior VSWR performance reduces back-reflection, safeguarding expensive VHF power amplifiers.
- High Measurement Accuracy: Industry-leading directivity allows for the most precise Forward/Reflected power diagnostics available.
- Geringe Signalverschlechterung: Minimal path loss ensures that coverage footprint is not compromised by the addition of monitoring hardware.
- Rugged Field Reliability: Corrosion-resistant finish and precision-machined ports are built for thousands of hours of service in B2B Umgebungen.
Anwendungsszenarien
- Netzwerke für öffentliche Sicherheit: Signal sampling and monitoring for P25 and TETRA digital radio base stations.
- Mobiler Landfunk (LMR): Integration into trunking systems and conventional repeaters for power leveling.
- Maritime Kommunikation: Reliable signal coupling for VHF Marine radio infrastructure and coastal monitoring.
- Antenna Site Diagnostics: Permanent installation for real-time VSWR tracking and alarm triggering.
- Militär & Verteidigung: High-reliability signal distribution in the 136-174MHz tactical communication bands.
Elektrische Spezifikationen
| Technische Daten | |||||
| Modell Nr. | MC-1317-xxdB-NF(XX means coupling in dB) | ||||
| Freq(MHz) | 136-174 | ||||
| VSWR | ≤1.3 | ||||
| Kopplung(dB) | 6±1.2 | 10±1.5 | 15±1.8 | 20±2 | 30±2.5 |
| Einfügungsdämpfung(dB) | 1.75 | 0.8 | 0.5 | 0.3 | 0.3 |
| Isolierung(dB) | ≥20 | ||||
| Leistung(W) | 100 | ||||
| Impedanz(Ω) | 50 | ||||
| Anschluss | N weiblich | ||||
| Farbe | Black plated | ||||
| Tempature(℃) | -30~+80 | ||||
Häufig gestellte Fragen
- Is this coupler compatible with digital radio standards like DMR or P25?
- Ja, die 136-174MHz range and linear response of this coupler make it fully compatible with all analog and digital modulation schemes used in the VHF Band.
- How do I choose the right coupling value (e.g., 10dB vs 30dB)?
- If you need a strong sample for further distribution, 6dB or 10dB is ideal. For protecting sensitive test equipment from high-power VHF Sendern, 20dB or 30dB is recommended.
- Can this coupler be used in high-moisture outdoor environments?
- The coupler features a ruggedized aluminum body; however, for direct outdoor exposure, we recommend using an IP-zertifiziert enclosure or weatherproofing the N-Typ connections to ensure long-term stability.
- Does the coupling value stay flat across the entire VHF Band?
- Das Gerät ist konzipiert für eine Kupplungsebenheit von etwa ±0.5dB, ensuring consistent and accurate sampling from 136MHz all the way up to 174MHz.
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