These babies are looking pretty rough, Paul (et al). After one pass with the synthetic steel wool and a wipe with isopropyl alcohol, I can see that the copper plating near the open end of the outer tubes is nearly gone on two of the cans. Have not done the other two yet, but they seem to be in better shape. I'm thinking more and more they're gonna need a refurb, although I can't see how they'd do anything with these, since the don't come apart any further.
Anybody ever done a refurb from dbSpectra? Wish they'd return my calls/emails. Mike WM4B > -----Original Message----- > From: Repeater-Builder@yahoogroups.com [mailto:Repeater- > [EMAIL PROTECTED] On Behalf Of Paul N1BUG > Sent: Wednesday, October 08, 2008 6:27 PM > To: Repeater-Builder@yahoogroups.com > Subject: Re: [Repeater-Builder] Desense has me pulling my hair out! > (Was DB4060 Duplexer Cables > > Mike, > > Thanks for this information. I will make a note of this. The DB4060 > and 4062 duplexers I've seen had identical loops (all strap) > throughout. Apparently some were different for whatever reason. > Here's another interesting bit... mine all had 004 penciled on them > but they were built like your 005's... strap all the way around the > loop. > > Were your knobs also soldered on? Fun, aren't they... > > Good luck with the cleaning. Hopefully it will help! > > 73, > Paul N1BUG > > > > Mike Besemer (WM4B) wrote: > > Paul, > > > > > > > > I got the knobs off two of them and got them totally pulled apart. > Both > > of them have a lot of lubricant on the inner tubes. looks like > somebody > > may have lubed the threads with 3-in-1 oil or something and it ran > > inside. The inside of the outer tube on one of them has some white > > 'stuff' growing in there. have not examined it yet. > > > > > > > > The most interesting thing I noticed is that the notch filters are > > different. Two of them have the number 004 penciled on the bottom of > > the enclosure and the other two are marked 005. The ones marked 005 > are > > copper strip all the way around the loop. On the ones marked 004, > the > > strip stops an inch or so from the notch capacitor and has a wire > > connecting the cap to the strap. The way they were arranged in my > setup > > was mixed. a 004 and a 005 on the TX and the same on the RX. I > assume > > that was part of the problem. The question is. which goes where? I > > guess trial and error might solve the problem. > > ------------------------------------ > > > > Yahoo! Groups Links > > >
