Hey If your looking for pass through as is audio check out the ICS controllers. The audio quality is quite good.
http://www.ics-ctrl.com/Frequency_Response_Curves.html www.ics-ctrl.com Brian ka9pmm Mike Morris WA6ILQ wrote: > > At 11:25 PM 09/11/08, Nate Duehr, WY0X wrote: > > > >(big chunk cut out) > > > >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... 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. > > > >Out here, so far we're just not that picky. But we understand why > >LARGE linked systems do it... they're fighting that little bit of > >audio quality loss at each "hop" in the linked system... and they HAVE > >to get ultra-aggressive about not lowering audio quality by even a > >TINY bit at each hop, or by the time you're five hops away in links, > >it starts to sound bad. > > Five? Try over a dozen... And sometimes double or even > triple that. See <http://www.cactus-intertie.org/CIS_Map.htm > <http://www.cactus-intertie.org/CIS_Map.htm>> > and count the hops from Los Angeles to Santa Fe NM. > Then do a hop count from Carson City NV to Corpus > Christi, TX or even to Austin. > > I've heard a conversation on the LA to Santa Fe path, and > you'd swear that the guy in NM was on the local machine > (except for the squelch tails when the links drop - and BTW > the controllers and the links are all full duplex). > > Remember every solid red line is an RF hop, and every dot > is a repeater. Some of the systems are VERY complex, > just count the lines going into a dot and then add the local > UHF repeater port(s) and the remote base port(s) as they > aren't shown. > The dashed lines are non-RF hops (some are piggybacked > on corporate T-1s). > > And Nate - they're getting closer and closer to Denver .... > That map is from Feb of this year. > > Mike WA6ILQ > >
