Overview
The Celwave CD870-C is a passive UHF isolator/circulator assembly designed for mobile radio and broadcast applications at 938.1625MHz. This component provides critical signal isolation and three-port circulation in RF transmission chains, protecting transmitters from reflected power and load mismatches. The CD870-C is a standard form-factor module used across professional communication systems.
Key Features
- Tuned for 938.1625MHz Channel 2 operation in the UHF band
- Passive three-port isolator/circulator design for forward and reflected power management
- Durable RF ceramic construction rated for continuous operation
- Standard mechanical interface for integration into transmission cabinets
- Used, tested condition—fully functional and ready for deployment
Technical Specifications
- Center Frequency: 938.1625 MHz
- Product Type: Isolator/Circulator Assembly
- Band: UHF (Ultra High Frequency)
- Ports: 3 (RF in, RF out, load/dummy)
- Application: Transmitter protection, impedance matching, reflected power dissipation
- Condition: Used, inspected and tested
- Manufacturer: Celwave
- Model: CD870-C
Typical Applications
The Celwave CD870-C is commonly installed in:
- Mobile radio transmission systems and base stations
- FM/UHF broadcast equipment and transmitter chains
- Land-mobile radio (LMR) networks operating in the 900MHz band
- Professional communication infrastructure requiring high-power RF isolation
- Antenna system protection and load stabilization
Compatibility & Replacements
Compatible With
- Celwave RF transmission cabinets and filter assemblies
- Standard 3-port UHF RF transmission components
- Broadcast and mobile radio baseband equipment operating at 938.1625MHz
- Professional-grade transmitter and antenna systems in the 900MHz UHF band
Replaces / Drop-In Replacement For
The Celwave CD870-C may serve as a replacement for equivalent UHF isolator/circulator assemblies designed for the same frequency and mechanical mounting. Verify frequency tuning and connector specifications before ordering to ensure compatibility with your existing transmission system.
Works With
- Celwave filter modules and RF transmission assemblies
- Transmitter platforms requiring 938.1625MHz isolation circuits
- Standard N-type and EIA connector interfaces common in RF baseband equipment
- High-power UHF transmission infrastructure and antenna systems
