[EAS] question regarding tones

[Dave Turnmire]

On 2/21/2012 1:11 PM, Tom Taggart wrote:
> Dave:
>
> If your sources are relaying somebody else, the problem is
> at these Sage units. The Sage units actually "record"
> incoming messages, then spit them out a few seconds later.
> If the record level is too high, it echoes back into the
> input. Hence the dual tones.
>
I don't think it is an echo issue... I have heard that in other 
contexts, but in this case, the tone is the ONLY part that is 
duplicated.  Plus, it isn't weaker... in fact, it is often stronger and 
clearer.   The impression I get is that the second box is that the first 
tone is what the incoming source provided, and that for some reason it 
isn't being recognized properly and that the box thinks it needs to 
create its own.  Just guessing on that.

Dave