Hi Ron, Thanks for the data. I realize that the separation is not suitable; however, I was wondering if I could use some of the helical resonators in that duplexer as a notch filter to reduce a nearby interfering signal. That signal is at 148.325 MHz which is out of range for the -A product.
Eric KH6CQ --- Ron Wright <[EMAIL PROTECTED]> wrote: > Eric, > > The DB4055 is 5 cavity band reject duplexer from > Decibel Products. > > Its notch is 75 to 80 db at 5 MHz. Min freq > separation is 5 MHz making it useless for 2 meters > Ham repeater. > > TX noise suppression at RX freq 70 db > RX isolation at TX freq 70 db. > > Max power is 150 W continuous and insertion loss is > 0.7 db. > > The versions ar A=150-162 and B 160-174. > > Would be good for something like MARS or other > commercial repeater. > > 73, ron, n9ee/r > > > > >From: Eric Grabowski <[EMAIL PROTECTED]> > >Date: 2008/04/04 Fri AM 03:29:17 CDT > >To: Repeater-Builder > <[email protected]> > >Subject: [Repeater-Builder] DB4055 Duplexer > > > > >I found tuning instructions for the DB4055 duplexer > on > >the R-B website, but I haven't been able to find > any > >specs on this unit. > > > >Does anyone know what the insertion loss and > maximum > >power ratings are? > > > >Is the low-split version suitable for use on 2 > meters? > > > >73 and aloha > >Eric KH6CQ > > > >__________________________________________________________ > >You rock. That's why Blockbuster's offering you one > month of Blockbuster Total Access, No Cost. > >http://tc.deals.yahoo.com/tc/blockbuster/text5.com > > > > > > > Ron Wright, N9EE > 727-376-6575 > MICRO COMPUTER CONCEPTS > Owner 146.64 repeater Tampa Bay, FL > No tone, all are welcome. > > > ____________________________________________________________________________________ You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. http://tc.deals.yahoo.com/tc/blockbuster/text5.com
