I have a DB-4062, which is the 6 cavity version of the 4060. It was old when placed in service in 1997 but worked OK. Over the years it just slowly deteriorated until it became essentially unusable. Finally I took the thing apart to investigate, and was able to restore it to excellent function. Rather than typing up a lot of details, let me refer you to something I wrote about this a while back.....
http://repeater.n1bug.com/duplexerrefurb.html 73, Paul N1BUG Aaron Sloan wrote: > Hello gang, > > I am wondering what the opinion is of the decibel products db4060 > duplexers for 2m service. We have a set that are nearing 30yrs old and > looking for a replacement. The current model never really preformed as > well as the specs. Is this an experience shared by anyone else? > > Thanks, > Aaron ka0zoz

