Al: I am building a pair of these , but this choke has been the holdup....I know the DC resistance, so I may use a couple resistors to get it going and by then I can get someone to wind me a couple of these chokes.....I could see that it was a choke but I couldn't figure how it worked in that circuit....I have all the other stuff, plus a friend is making the chassis for me.....Thanks for your help on this.........Will