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
