CHARLES HUTTON wrote: > That would be the R-388 and 51J3 if I recall correctly. > I don't think so. The 51J's has a 500KHz IF, but the standard filters are 1.4, 3, and 6KHz. I'm thinking perhaps 51S1, but can't find my book. Al -- Al Klase - N3FRQ skywaves at webex.net Flemington, NJ 08822 Web Page: http://www.webex.net/~skywaves/home.htm