> > We feed Vol/Sq Hi into the S-Com's with the de-emphasis > > capacitor recommended by them added at the receiver input > > inside the 7K... the audio "inside" the controller is > > de-emphasized "normal" audio... and then back out into > > the normal audio inputs of the MASTR II...
Have you looked to see if the Sub Audible (CTCSS) Tone is present inside the S-Comm Controller and what it's doing or not doing? In a single site repeater applications many of us are not big fans of blowing sub audible tone right through an external repeater controller... regardless of the quality (or lack there of) of the external controller. But there are systems where passing all or all but a very narrow range of low (CTCSS) frequencies is a desired thing. > > none of the "flat-audio" stuff that some larger west coast > > and other groups have done. Search the list archives for > > "flat-audio" to see some AMAZINGLY good engineering discussions > > about how to accomplish a REAL what-goes-in-is-what-comes-out > > setup... over multiple hops. The UHF Condor Network in some of the examples I've seen uses a deep narrow (considered single frequency) CTCSS Notch Filter... so you don't have to deal with fighting different CTCSS Filter responses and the ability to pass other CTCSS tones through the system to distant locations. > Five? Try over a dozen... And sometimes double or even > triple that. See <http://www.cactus-intertie.org/CIS_Map.htm> > and count the hops from Los Angeles to Santa Fe NM. The phone company did it half a century back with a Nationwide "Long Lines" repeater system. No reason it can't be done in 2008 with the current equipment we have available. cheers, s.
