Specifications Product Name Shortwave Choke Magnetic RingMaterial ABSColor BlackEM 25 Power rating 200W Magnetic ring diameter approximately 4 5 cmEM 43 Power rating 1000W Magnetic ring diameter approximately 6 cmFeatures 1 Effectively reduces electromagnetic interference by suppressing common mode currents providing stable signal transmission for HF shortwave radios 2 Made with imported magnetic rings ensuring high compatibility and consistent performance for testing and measurement applications 3 Features M male to M female connectors enabling simple and seamless series connections between radio stations and feeders 4 Offers improved thermal performance with a larger EM 43 magnetic ring ideal for higher power applications up to 1000W 5 Compact and lightweight design enhances portability making it suitable for various shortwave radio setups Package Included 1 x Shortwave Choke Magnetic Ring