Sinclair Q-2222E-2 VHF Duplexer 160-174 MHz
The Sinclair Q-2222E-2 duplexer is a compact, high-performance Q-Circuit Res-Lok 4-cavity unit engineered for VHF communications in the 160-174 MHz band. Designed for space-constrained installations, this VHF duplexer delivers exceptional isolation and low insertion loss in a rack-mount form factor. Perfect for two-way radio systems, emergency services, and commercial communications networks requiring reliable frequency separation with minimal footprint.
Key Features
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Q-Circuit Res-Lok Technology — Advanced resonator design for superior frequency stability and performance
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4-Cavity Configuration — Optimized filtering for the 160-174 MHz VHF band with high selectivity
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Compact Rack-Mount Design — Space-efficient form factor ideal for limited installation environments
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120 W Average Input Power Rating — Supports high-power transmit applications with reliable operation
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N-Female Connectors — Standard 50 Ω impedance matching for seamless system integration
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Pass-Reject Operation — Simultaneous transmit and receive with excellent isolation
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Low Insertion Loss — Minimizes signal degradation for maximum system efficiency
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High Isolation Performance — Prevents transmit-to-receive interference in duplex operations
Technical Specifications
| Specification |
Value |
| Manufacturer |
STRATEGIC SOURCING / Sinclair Technologies |
| Part Number |
Q-2222E-2 |
| Product Type |
VHF Duplexer |
| Frequency Band |
160-174 MHz |
| Cavity Configuration |
4-Cavity |
| Technology |
Q-Circuit Res-Lok |
| Average Input Power |
120 W |
| Connectors |
N-Female |
| Impedance |
50 Ω |
| Operation Mode |
Pass-Reject (Duplex) |
| Insertion Loss |
Low |
| Isolation |
High |
| Form Factor |
Rack-Mount Compact |
Frequently Asked Questions
What is a VHF duplexer and how does it work?
A VHF duplexer is a passive RF component that enables simultaneous transmit and receive operations on different frequencies within the same band. The Q-2222E-2 uses 4-cavity filtering to separate transmit and receive signals, preventing interference while maintaining low insertion loss and high isolation performance.
Is the Sinclair Q-2222E-2 suitable for compact radio installations?
Yes. The compact 4-cavity duplexer is specifically designed for space-limited environments. Its rack-mount form factor and efficient Q-Circuit Res-Lok design make it ideal for installations where physical space is a constraint without compromising performance.
What power levels can this 160-174 MHz duplexer handle?
The Q-2222E-2 supports up to 120 W average input power, making it suitable for both medium and high-power VHF communications systems. The N-Female connectors and 50 Ω impedance ensure reliable operation across the specified power range.
How does the Res-Lok cavity design improve duplexer performance?
The Res-Lok technology provides enhanced frequency stability and superior filtering characteristics. Combined with the Q-Circuit architecture, it delivers exceptional isolation between transmit and receive paths, minimizing signal degradation and interference in duplex operations.
