R&D Microwaves C1-A55 10 dB RF Directional Coupler

Professional four-port directional coupler manufactured by R&D Microwaves. The unit is suitable for RF laboratory, development, measurement, monitoring, and system-integration applications.

Specifications marked on the unit:

• Model: C1-A55
• Frequency range: 700 to 2800 MHz
• Nominal coupling: 10 dB
• Nominal impedance: 50 ohms
• Four accessible RF ports
• Connector type: SMA female
• Main-line ports marked IN and OUT

The manufacturer’s present product information describes its general-purpose directional couplers as suitable for development, laboratory, commercial, and military systems. This appears to be an older or custom model that is no longer included in the manufacturer’s current online product table.

An exact datasheet for the C1-A55 was not located. Maximum input power, insertion loss, directivity, VSWR, coupling tolerance, and other unmarked specifications are therefore not guaranteed and should be verified by the buyer for critical applications.

The “DC1” sticker appears to be a previous inventory or system-location identifier and is not the manufacturer part number.

Condition:

Used and untested. No RF performance measurements have been performed. The enclosure shows scratches, surface marks, label wear, and other normal cosmetic signs of previous use or storage. Some discoloration is visible around the connectors. All four SMA female connectors appear physically intact.

Included:

• One R&D Microwaves C1-A55 directional coupler
• No cables, adapters, external terminations, mounting hardware, documentation, or other accessories

The photographs show the actual item being sold and form part of the description. Please inspect all photographs carefully before purchase.