Fiberplex FO1-2971-RS-ST Isolator for Telephone (POTS) Exchange Side/Singlemode ST Optics/RFI Suppressed
![Been getting this distinguished gentleman up to shape – even with a telephone wire antenna and terrible RFI, I've gotten a few contacts across the US! : r/amateurradio Been getting this distinguished gentleman up to shape – even with a telephone wire antenna and terrible RFI, I've gotten a few contacts across the US! : r/amateurradio](https://external-preview.redd.it/us_fzBW9vOoS5ce2ZK1Tk8N8CIeYz1LswMyq3ErLXbI.jpg?width=640&crop=smart&auto=webp&s=5cb3b61c0b3ac087694d895a7e5a1d9fde53a976)
Been getting this distinguished gentleman up to shape – even with a telephone wire antenna and terrible RFI, I've gotten a few contacts across the US! : r/amateurradio
![RFI Forum Instructor: Ed Hare, W1RFI ARRL Laboratory Manager Co-Editor: ARRL RFI Book. - ppt download RFI Forum Instructor: Ed Hare, W1RFI ARRL Laboratory Manager Co-Editor: ARRL RFI Book. - ppt download](https://slideplayer.com/slide/12170364/71/images/47/Telephone+interference+cures%3A.jpg)