Hello, Vari-notch is a TX-RX Company trade name.
Neil - WA6KLA Ken Arck wrote: > > At 02:54 PM 4/27/2004 -0500, you wrote: > >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? > > <---Yes they are the same CONCEPT, but CATV ones would be 72 (75?) ohm. > You, of course, need 50 ohm ones. The idea behind using them is to present > an accurate 50 ohm load on the duplexer ports, because a change of load > affects the tuning. If you don't have any, I'd suggest begging or borrowing > some from a buddy :-) > > All I know is that the duplexers were set up as a Varinotch filter system. > > <---If I'm not mistaken, that's a notch type duplexer. Aside from visiting > TX/RX's website (to see if you can locate tuning instructions), you might > want to check out this link as well: > > http://www.repeater-builder.com/rbtip/notchduptuning.html > > 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/
