The SB401 has 2 components that are missing. A small choke and a cap. I have been told that they are necessary for transceivers. What are they and what are the relative values, not the Heath values in the book. thanks de Skip K3CC -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 266.11.2 - Release Date: 5/2/2005