Greetings All, I’ve noted the thread regarding baluns with interest and I have 5 ferrite cores that are a perfect fit over RG-8 type coax to make a good sleeve balun. They measure 1 1/8” in length, with a 1” o.d. and a ½” i.d. The price is $30.00 for the lot plus shipping from 92835. A .jpg is available. 73, Marv, W6FR