25:1 to 81:1 Baluns/Ununs 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. SWAN Electronics Transceiver RFI Kits Store/RFI Solution Kits/Radio Communication RFI Solutions/HF/VHF Transceiver RFI/Noise Kits/SWAN Electronics Transceiver RFI KitsRefine by FiltersClear allFiltersClear allShow itemsShow itemsSWAN 250, 350, 400, 500, 700 Transceiver RFI Kit - 4 RFI/Noise Reduction FiltersSWAN 250, 350, 400, 500, 700 Transceiver RFI Kit - 4 RFI/Noise Reduction FiltersSKU RFI-SWAN$34.95 Buy Now