Jesse, Again here is the text from my first reply. "The MSR2000 processes the audio, and does de-emphasis, on the "R1-Audio board" before it goes through the various paths to the exciter where it gets pre-emphasized". If you have the manual, look at the RF control chassis where all the interconnections between the various modules and cards get inter-connected. >From the receiver, the discriminator detected audio goes from pin 5 to the R1 audio squelch card pin 7. On the R1 audio squelch card the audio goes through the variable gain amplifier, the R7 level adjust, the audio mute gate, then the de-emphasis amplifier and finally to the card edge pin 17. >From there (depending on different versions of RF control chassis) it goes to pin 17 on the squelch-gate card etc. etc. So the general audio used for the local speaker and in the case of the basic repeater system comes De-Emphasised from the R1 Audio-Squelch module. 73, Tony VE3DWI
_____ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Jesse Lloyd Sent: April 14, 2008 18:29 To: [email protected] Subject: [Repeater-Builder] Re: MSR2000 Exciter audio pre-emphasis >From what I have read in the manual, the receiver board puts out discriminator audio, and the exciter modulates direct FM with no pre-emphasis. So with a MSR200 repeater in its simplest form Receiver, Station Control Card, Squelch Gate, Exciter, I would suspect that the audio remains unchanged though the whole system. Am I right? Jesse On Mon, Apr 14, 2008 at 10:23 AM, Jesse Lloyd <[EMAIL PROTECTED] <mailto:ve7lyd%40gmail.com> com> wrote: > Hey all, > > MSR2000 does the exciter do any pre-emphasis, or is the repeater > designed to use flat audio stock from Motorola? I know the local > speaker de-emphases audio, but repeat audio, does it get de-emphasised > then pre-emphasised at the exciter? > > Thanks, > > Jesse >
