Other than ordering the software, is there an "old-school" formula that can be used for this? I been using the "decibel-wheel" to convert from microvolts to dbm.
NORM KNAPP wrote: > > > Hmmmm > How about a mastr ii pll Vhf 147.225/147.825 with db224a @ 270' with > 300' ldf7-50a and 110watts. I am running 45 watts right now. > Thanks > De N5NPO > Norm > > ----- Original Message ----- > From: [email protected] > <mailto:Repeater-Builder%40yahoogroups.com> > <[email protected] > <mailto:Repeater-Builder%40yahoogroups.com>> > To: [email protected] > <mailto:Repeater-Builder%40yahoogroups.com> > <[email protected] > <mailto:Repeater-Builder%40yahoogroups.com>> > Sent: Sat Aug 22 10:22:36 2009 > Subject: RE: [Repeater-Builder] isolation > > > > My CommShop calculates 99.65 dB is required. I'd definitely be looking > at a > six-cavity BpBr duplexer for this station. > > 73, Eric Lemmon WB6FLY > > > -----Original Message----- > From: [email protected] > <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > [mailto:[email protected] > <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> ] On Behalf Of kj4si > Sent: Saturday, August 22, 2009 6:55 AM > To: [email protected] > <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > Subject: [Repeater-Builder] isolation > > Hope someone may have a program,commshop? What I need to know is what > amount > of isolation with duplexers that is required for a GE m2 receiver with > .1...@12db and a m2 pll exciter,100 watt PA on vhf,600kc split?1/2in > helix,with 4pole db224 antenna at 70 ft. > > thanks kj4si > > > > >
