How did they handle this back in the 60s/70s when I remember seeing "Adjusted for narrowband +/- 5 kHz" stickers on the radios? Were those factory stickers?
Joe M. Eric Lemmon wrote: > Tom, > > The "narrowbanding kit" produced by Communications Specialists and others is > for the receiver section, and does not affect the transmitter section. The > emission mask specified by the FCC for mandatory narrow band operation must > be incorporated by the equipment manufacturer and then tested by an > FCC-approved agency. This process has never been in the hands of the owner > or user, despite widespread popular belief to the contrary. Simply reducing > the deviation to a lower setting does not magically make a transmitter > narrow band compliant; the limiting circuitry must be modified as well. > Moreover, the FCC Type Acceptance for both the MSR2000 and the Mitrek does > not include narrow band (11K2F3E) emissions. Naturally, these requirements > apply only to commercial usage under Part 90 Rules. > > 73, Eric Lemmon WB6FLY > > > -----Original Message----- > From: Repeater-Builder@yahoogroups.com > [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tom Manning > Sent: Friday, August 27, 2010 10:57 AM > To: Repeater-Builder@yahoogroups.com > Subject: Re: [Repeater-Builder] Can a Master 3 narroband > > > > Hello Jim > I note your message about narrowbanding and the comment about the > MSR2000. I have seen no info on doing so but it seems to me that the MSR200 > could be narrowbanded. The MSR is very similar to the Mitrek and it can be > narrowbanded by using a kit by a company that slips my mind. Therefore I > feel narrowbanding would be possible. I will be attempting this in six > months or so. 73 de Tom Manning, AF4UG > > ----- Original Message ----- > From: Jim in Waco WB5OXQ <mailto:wb5...@grandecom.net> > To: Repeater-Builder@yahoogroups.com > Sent: Friday, August 27, 2010 10:07 AM > Subject: [Repeater-Builder] Can a Master 3 narroband > > > > > I have a uhf master 4 that has been used for years as a paging > exciter. Now the pager business is in the tank I would like to make the > master 3 into aq repeater for commercial needs to replace a msr2000 because > the msr cannot narroband. If the ge can't either I dont want to waste time > and just buy a new repeater that can narroband. > wb5...@grandecom.net > > > > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > > ------------------------------------------------------------------------ > > > Internal Virus Database is out of date. > Checked by AVG - www.avg.com > Version: 9.0.783 / Virus Database: 271.1.1/2746 - Release Date: 03/14/10 > 03:33:00 >
