The duplexers are a set of TX/RX duplexers, six of them. When you say a 3db pad, that is something that I am not sure of, is this basically the same thing as a db pad used in CATV systems? All I know is that the duplexers were set up as a Varinotch filter system.
Mathew ----- Original Message ----- From: "Ken Arck" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, April 27, 2004 2:49 PM Subject: Re: [Repeater-Builder] Duplexer Alignment > At 07:40 PM 4/27/2004 -0000, you wrote: > >Is there any methods of tuning a set of duplexer without having a > >Spectrum analyzer. I am in the learning stages again. I have an > >IFR-500a, so I can generate a signal into them. I know this would > >work somewhat for the receive, but what does one do for the > >transmit. > > <---Why wouldn't it work for transmit? As a matter of fact, it would work > just fine by both the receive AND transmit sides of the duplexer. RF is RF, > regardless if its -100 Dbm or +10 Dbm, right? > > Depending on what kind of duplexer is it (BP/BR or just BR) determines the > tuning procedure. You might want to check the website to see if yours is > listed. One thing though - It's a good idea to use a 3 db pad on the > receiver you're using for tuning, since you have no guarantee it will > present a 50 ohm load to the duplexer. > > Oh, and don't forget to make sure a 50 ohm load is on the duplexer port > not currently being tuned as well (a 3 db pad would work here as well). > > Ken > -------------------------------------------------------------------------- ---- > President and CTO - Arcom Communications > Makers of state-of-the-art repeater controllers and accessories. > http://www.ah6le.net/arcom/index.html > Be sure to see our products at this year's Dayton Hamvention! > Repeater Builders spaces 707 through 710 > AH6LE/R - IRLP Node 3000 > http://www.irlp.net > > > > > > 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/
