> Hi Jesse, you turn down the transmit deviation, as long as > set the PL deviation correctly also.
The CTCSS deviation is directly tied to the transmit channel element IDC Control. If you set the CTCSS Deviation to the desired narrow band value the peak IDC setting should be very close* to the desired/target value. However, I don't depend on the IDC Circuit to hard limit my TX Deviation. *The exception to the above is that I (and most everyone else from what I see actually on the air) also don't use/set standard CTCSS or LTR Data Deviation values/levels. > As for the receiver, you will need filters that are more > narrow; other wise you will get adjacent channel intererence. Not really... unless you're up against some really busy adjacent channel activity. > See this link:_http://www.com-spec.com/narrow.htm_ (http://www.com-spec.com/narrow.htm) But it's not a bad idea to do the narrow band RX IF Filters if you truly are going full-on narrow band. > You want the Mitrek kit. If you have the standard MSR-2000 Receiver with the same IF Frequency as the Mitrek Mobile. [original post question] > > Hey guys I was asked if it's possible to narrow band a > > MSR 2000 (12.5 KHz ch spacing, 2.5 KHz max deviation)KHz > > ch spacing, 2.5 KHz max dev turn the IDC down and setup > > the audio, is it not that simple? In the real world, yes it is that simple... > > I suppose you wont have the option of companding the audio, > > but if that was done at the originating station, it should > > pass through the repeater without a problem. Yes, if you're not using any external repeater controllers. > > Thoughts? Rarely > > Jesse cheers, s.
