KiloHertz is the correct term! Richard, N7TGB
-----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of DCFluX Sent: Saturday, May 21, 2005 7:17 PM To: Repeater-Builder@yahoogroups.com Subject: Re: RE : Re: [Repeater-Builder] Poor Repeater RX Don't you mean, kiloCycles? On 5/21/05, Kevin K. Custer <[EMAIL PROTECTED]> wrote: > > > > >------- Original Message ------- > >From : Eric Lemmon[mailto:[EMAIL PROTECTED] > >Sent : 5/21/2005 4:05:15 PM > >To : Repeater-Builder@yahoogroups.com > >Cc : > >Subject : RE : Re: [Repeater-Builder] Poor Repeater RX > > > >Alexander, > > > >The > >Sinclair Q-202G duplexer can barely make 85 dB when tuned on a network > >analyzer, so that's the major part of your desense problem. It's only a > >four-cavity duplexer, specified at 80 dB minimum isolation, so no amount > >of tuning is going to make it operate at an isolation above its design > >limit. > > While I don't disagree with what has been written, please realize that > *most* commercial manufacturers 'rate' their highband/2M duplexer at 500 > kiloHertz split, not 600 kiloHertz where most amateur 2 meter repeaters are > operated. This added frequency separation allows for the duplexer to > provide more than the stated isolation at the 500 kiloHertz specification. > > The Wacom WP-641 is specified at 85 dB of isolation at a 500 kiloHertz > split, but provides 93 dB of isolation at 600 kiloHertz. The Sinclair Q202G > is similar in its factory specifications, and isolation provided. > > Kevin Custer > > > > > > > > ________________________________ > 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 the Yahoo! Terms of Service. 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/
