--- type: product schema_version: 1 stock_number: "57387-3" canonical_url: "https://www.artisantg.com/57387-3/Merrimac-CRM-10-50" json_url: "https://www.artisantg.com/57387-3/Merrimac-CRM-10-50.json" generated_at: "2026-11-07T09:38:28.304Z" last_updated: "2026-10-14T13:00:51.160-05:00" --- # Crane / Merrimac CRM-10-50 Directional Coupler _Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._ ## Summary - Manufacturer: Merrimac - Model: CRM-10-50 - Condition: Used and in Excellent Condition - Price: Quote only - Availability: Not in Stock - Warranty: 1-Year Warranty with 30-Day Return Guarantee - ITAR restricted: No - Shipping weight: 0.25 lb, estimated - Shipping dimensions: 8X8X3 in, estimated ## Categories - Test Equipment > Electrical Test > Couplers (primary) - Military and Embedded Equipment > Other Milspec ## Details ### Configuration - Connector: SMA - Frequency Range: 2-100 MHz - Operating Bandwidth: 2-100 MHz - Coupling Tolerance, Max.: 10 ± 1.0 dB - Frequency Sensitivity, Max.: ±0.5 dB - Directivity, Min.: 30 dB - Insertion Loss, Max.: 0.5 dB - VSWR  - Main Arm: 1.3:1  - Coupled Arm: 1.3:1 ## Function Provides precise RF signal sampling and coupling within the 2 to 100 MHz frequency range using a lumped element design to ensure compact size and high performance. Operates as a passive microwave directional coupler for monitoring, sampling, and routing signals in transmit/receive systems by isolating forward and reverse power flows. Interfaces with RF equipment for signal measurement, testing, and system tuning in aerospace and communication hardware platforms. Supports coupling values typical of CR/CRM series, enabling accurate directional power measurement and signal distribution with low insertion loss and high directivity. ## Platform Microwave and RF signal processing systems for communication, radar, electronic warfare, and test equipment applications requiring directional coupling capabilities. Compatible with coaxial transmission lines in 50-ohm impedance environments. Operates in analog RF circuits and systems requiring signal sampling, measurement, or power monitoring. Integrates with standard RF connectors and interfaces for laboratory, field, or embedded installations. Used in environments requiring accurate bidirectional signal monitoring, power division, or isolation between primary and coupled signal paths. ## Application A passive RF device engineered to non-invasively sample a defined fraction of forward or reverse RF power from a main transmission line, exhibiting high directivity and low insertion loss. It operates within a specified frequency band and characteristic impedance, typically 50O nom. Interfacing is achieved via standard RF coaxial connectors. Common applications include power monitoring, VSWR measurement, signal injection, and feedback loops in communications, radar, and test equipment. ## Images - - - -