[App_rpt-users] Turning RTCM Preemphasis off

Bryan Fields Bryan at bryanfields.net
Tue Jul 11 16:16:46 EDT 2017


On 7/11/17 4:12 PM, Joe Moskalski wrote:
> I will be separating the voice audio and PL audio using active filters so that
> I can inject the PL tone and Transmit audio to separate points on the
> transmitter so that the Transmit audio and PL tone level can be adjusted
> independently at each transmitter in the simulcast system. Unfortunately this
> transmitter adds preemphasis to the transmit audio and this cannot be changed
> in the transmitter. 

You certainly understand it then, and sound like it's under control.  Lots of
simulcast questions don't quite have the same level of detail understanding.

Easiest way is to change the code or do an external filter.  Since you're
building a board anyways, an external filter would probably be the easy way to
do it.

I'd (and I'm sure others) be interested in the details of your system when you
get it working.

73's
-- 
Bryan Fields

727-409-1194 - Voice
http://bryanfields.net


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