Ozzie wrote: > http://www.4fast.net/ozzie/BC-584/ > Looks like the receiver is aka R-589, and since it's a modified BC-348R with external squelch and noise limiter, you should be able to get a lot of benefit from the standard BC-348 schematic. Hi-res scans at http://www.jamminpower.com/main/bc348.jsp 73, Bob W9RAN