How I now the kind of coil or the manufacturer of it , if on the metal can of the coil there are only a number li this: C104 --> red center P506 --> black center SH102 --> white center I'm going to try to use this coils that have in a old wireless Phone card. Thanks Felix Centeno centella@telcel.net.ve http://www.geocities.com/CapeCanaveral/Hangar/2372/