I do not know about Nextel, but, the US DTV signal fits into a 6 MHz bandwidth. We use a mask filter to ensure that the bandwidth is no more than 6 MHz. 500 kHz from band edge <= -47 dB 6 MHz from band edge <= -110 dB
73 Glenn WB4UIV At 10:58 AM 8/2/2010, you wrote: >On 8/2/2010 10:45 AM, Scott Zimmerman wrote: > > I was wondering about that myself. The bandwidths spec'd just didn't > > seem to compute in my feeble mind. > > > > Scott > > > > Scott Zimmerman > > Amateur Radio Call N3XCC > > 474 Barnett Road > > Boswell, PA 15531 > > > > > > Jeff DePolo wrote: > >> > >>> Florida Repeater Coordinator proposes narrowbanding: > >>> > >>> http://www.florida-repeaters.org/FRC%202meter%20narrowband%20p > >> olicy%20released%207-18-10.pdf > >> > >> Apparently Carson's Rule works different in Florida than it does > everywhere > >> else. > >> > >> --- Jeff WN3A > >> > >Course, wiki says Carson's rule "is of little use in spectrum planning" >anyway...(http://en.wikipedia.org/wiki/Carson_bandwidth_rule). These >must be the same people that think Nextel's iDen 6:1 TDMA format fits in >a 25 KHz channel, or that think the US DTV standard fits in a 6 MHz >channel...NOT! > > > >------------------------------------ > > > >Yahoo! Groups Links > > >
