ERI Precision Coaxial Directional Couplers
CD250 1-5/8-inch
CD350 3-1/8-inch
CD450 4-1/16-inch
CD650 6-/18-inch
Electronics Research, Inc. (ERI) precision directional coupler family for FM radio, VHF, and UHF television applications. These precision fixed directional couplers are for 1-5/8-inch, 3-1/8-inch, 4-1/16-inch, and 6-1/8-inch transmission lines and can be purchased with one (1) to four (4) coupling probes. These directional couplers are balanced high precision test instruments. They are capable of a being set for a wide range of coupling values and always have excellent directivity. The inner conductor and fixed locking flange maintain precise alignment of the inner conductor to maintain the calibrated coupling level and directivity during shipping and when they are relocated.
The CD250, CD350, and CD450 models include one fixed locking flange with a fixed male inner connector and one swivel flange with a removable inner connector. The coupler includes hardware for the locking flange. The CD650 has two swivel flanges and one fixed male inner connector. Order ERI Part Number RLA600-21 6-1/8-inch flange hardware kit separately if flange hardware is needed.
CD250, CD350, CD450, and CD650 Specifications
- Frequency Range:50 to 608 MHz
- Line Size:1-5/8, 3-1/8, 4-1/16, or 6-1/8 inch
- Impedance:50-ohm
- Sample Port Connector:Type N or SMA Female
- VSWR:1.03:1 or better
- Coupling:-30 to -70 dB
- Directivity:30 dB or better
- *Type N sampling ports include one (1) termination load per port.
Features
- Balanced directional coupler designed for stand-alone test port applications.
- Models available with one (1) to four (4) coupling ports
- Type N or SMA female ports
ERI Precision Coaxial Directional Couplers
ERI Precision Coaxial Directional Couplers