Well I did find some stuff on it, but as I mentioned, duplexers and the cavities are all new to me, as I have never done them myself, as the set I have on the 2 meter repeater was tuned for me when I bought them, and the 440 was done better than 15 yrs ago. But that is what I thought, but from reading the information on the duplexers, as in RX kills TX and vica-versa, thought I had better ask. Thanks for the help.
Mathew ----- Original Message ----- From: "Chuck Kelsey" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Sunday, December 26, 2004 11:58 AM Subject: Re: [Repeater-Builder] Re: 2 Meter VHF Preamp > > A bandpass cavity does what its names states - it passes a frequency. If you > are installing a bandpass cavity ahead of a receiver preamplifier, then you > want to tune it to pass the receiver frequency. A bandpass cavity is NOT a > duplexer. > > I'm pretty certain that there is information regarding this on the repeater > builder's web site. If you are new to repeaters, you really should spend > some time browsing the vast amount of information contained on the web site. > > Chuck > WB2EDV > > > > > ----- Original Message ----- > From: "w9mwq" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Sunday, December 26, 2004 2:47 PM > Subject: [Repeater-Builder] Re: 2 Meter VHF Preamp > > > > > > > > On these bandpass cavity filters, would the Decibel Products DB4001- > > 1 be a good choice to use, and what would be the method of tuning > > them? Are they tuned to the transmitter output or the receiver > > input? Not at all familiar with tuning duplexers, as this is > > something I am now learning to do. Thanks. > > > > Mathew > > > >> > > > > > > > > Yahoo! Groups Links > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
