Re: [Repeater-Builder] Re: Audio Reproduction

[scomind]

Hi Joe,   You want us to believe that PM is why we Pre-emp FM.   Yup. It's a PM world, and you must make your FM equipment work in that world.   That's simply not the case. This is not supported by anything I have ever seen or read, only by you.   These are conclusions we drew from old documents from the 40s. We don't have anything firmer than that, nor have we seen anything that implies preemphasis was intentionally added to a flat system by any standards body.   While I do agree that preemphasis improves intelligibility, again there is no evidence it was added with malice and forethought.   I would request that if you, or anyone, has any written material at all that sheds light on how PM and FM came to be, share it with the group.   Frankly, we don't even know how 455 kHz became an IF standard - - but somebody, a long time ago, picked it and it stuck. These things happen.   73, Bob Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/   To unsubscribe from this group, send an email to: [EMAIL PROTECTED]   Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.