Yes you are right. I misread the frequencies involved and was thinking they were much closer spaced. 100 KHz is doable with cavity/isolator type combiners. Loss will run around 2 db or so.
73 Gary K4FMX > -----Original Message----- > From: [email protected] [mailto:Repeater- > [EMAIL PROTECTED] On Behalf Of nj902 > Sent: Monday, September 17, 2007 11:41 PM > To: [email protected] > Subject: [Repeater-Builder] Re: 3 Channel UHF Ferrite Combiner > > The T-Pass UHF transmitter multicoupler [e.g. 73-67-25-2C-03] from TX- > RX systems uses cavity-ferrite technology and can combine two > transmitters at a separation of only 75 KHz. "The loss ... is > comparable to that of a hybrid combiner, but T-Pass provides the > benefit of cavity selectivity for noise and intermodulation > supression." > > ---------------------------------------------------------------------- > --- In [email protected], "Gary Schafer" > <[EMAIL PROTECTED]> wrote: > > "The only way to do the close spaced frequencies 447.750 and 447.850 > is with a hybrid type combiner. ..." > . > . > [mailto:[EMAIL PROTECTED] On Behalf Of Mike Mullarkey > > "...We need to combine TX 447.750, 447,850 and 464.900 into one > antenna. ...' > > > > > > > Yahoo! Groups Links > > >
