To get the RF phase accuracy you're implying that is required would mean
that everything in the RF path would have to guarantee that phase
relationship. That means the same length RF interconnect cables inside the
cabinet, same RF feedline length (or full-wavelength multiples thereof),
same antenna type, etc. Even if you could guarantee that kind of accuracy
at the time of installation, thermal effects would quickly throw it way off
(cables expanding/contracting with temperature for example). Not to mention
the propagation delay will vary a whole lot with temperature, humidity, etc.
Just not gotta happen....
--- Jeff WN3A
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of DCFluX
> Sent: Thursday, June 24, 2010 12:51 AM
> To: [email protected]
> Subject: Re: [Repeater-Builder] Quantar Simulcast Issue
>
>
>
> Well if the transmitters are running at the same frequency but at a
> different phase it is reasonable to expect that there would be some
> point where the 2 transmitters are at close to the same power level,
> but 180 degrees out of phase which should cancel out the receiver or
> at least make interesting noises.
>
> >
> > Well, yeah, I know what propagation delay is, but I don't
> see where the
> > phase of the reference has an effect on anything. Are you
> thinking that the
> > transmitter's RF carrier needs to be launched with phase
> coherence at each
> > site?
> >
> > --- Jeff WN3A
> >
> >
> >
> >
> >
> >
> > ------------------------------------
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
>
>
>
