These baluns and ununs can be used for impedance matching and also as End Fed halfwave antenna matching transformers to 50 or 75 ohm coax cable.
Automotive Battery Charger RFI Kit - - 1-300 MHz RFI Suppression
Product Details
This kit suppresses EMI and RFI generated from DC battery charger such as used on automotive batteries uo to 100 amps output.
Simple snap on the ferrite suppressors (1" hole size) onto the AC input using multiple turns through the center and do the same for the DC output cables. The more turns through the center the hiogher the RFI suppression.
Simple - Effective and Low Cost solution.to suppress charger noise fed back into AC power lines acting as RFI transmitting antennas!