skipp025 wrote: >> Jim <[EMAIL PROTECTED]> wrote: > >>> They will already operate narrow band without any modification. >>> >> Not an MSR-2000! They stopped making those before the NB mandate >> came into being. > > The mandate in place being the requirement for narrow > band operation?
Right-for the feds, the cutoff is the end of this year-12/31/07! Commercial LMR is a few years off yet. >> You can turn the deviation down, of course, but the receiver >> will still be wide-band. Xtal filter mods can be gotten from >> Comm-Spec, > > The receivers operate narrow band quite well as is. One doesn't > need to replace the xtal filters in most applications. The adjacent channel rejection is not adequate for narrowband usage. There WILL be people on the adjacent NB channels soon if there isn't already. >> ...but doing so is not appropriate for a fed or PS customer, > > Depends really... lot of them are in PS service in rural areas > where tax money doesn't flow like water. But mention Fed, Homeland > Security (kind of an oxy...) and PS Customers and there are often > few restraints on the purse strings... your tax dollars spent. Not > to mention the "Empire Builders" within a lot of Gov Agencies who'd > much rather have a shinny new Motorola 700 MHz Trunking System > in place regardless of the initial and on-going costs. > >> if for no other reason then it's old enough that it should be >> replaced anyway, from a reliability standpoint. 20 years is >> a normal end-of-life for base station equipment in >> mission-critical applications. >> Jim Barbour >> WD8CHL Point is-the equipment will be too old to be considered reliable anyway. Parts are no longer available, because the components are no longer made. > We most often pay Government Technicians to replace repeater > equipment versus fixing them. > > Still doesn't restrict the MSR-2000 Repeater Receiver from narrow > band operation without modifications. The factory installed xtal > filters work just fine as-is. Can't help it if the repeater is > not on a magic list as being wide band only operation. > > cheers, > skipp See above. Adjacent channel rejection just isn't adequate for narrowband operation. It will hear splatter from adjacent channel users. -- Jim Barbour WD8CHL
