[App_rpt-users] FLAT vs Preemphasized audio

Benjamin L. Naber Benjamin at kb9lfz.com
Mon Jul 22 06:49:54 EDT 2013


The settings you have thought to be for usbradio.conf appear to be
correct.

Not sure about the simpleusb for DMK URI. You can use the DMK URI with
usbradio.conf. I like the usbradio.conf over simpleusb, seems to me a
lot of folks are having issues with simpleusb.

Remember to use radio-tune-menu with a service monitor to ensure your
TX/RX audio levels are set appropriately!

~Benjamin, KB9LFZ





On Sun, 2013-07-21 at 23:15 -0700, KJ6KO wrote:
> We plan on interfacing with a Palomar repeater controller which uses
> FLAT audio in and out.  It is designed strictly for disc audio in and
> output directly to a radio's modulator.  
>  
> Would the settings.....
> RXDEMOD = FLAT
> TXPRELIM = YES
> .... be correct to make sure the Palomar gets already pre-emphasized
> audio in and audio coming from the Palomar to the URI is de-emphasized
> in the URI before going out to the rest of the network?  Many of the
> other nodes on the network are using MIC inputs and "Speaker" audio
> out.
>  
> Would these commands go in the usbradio.conf file?
> If it is a DMK URI, would the same commands go in the simpleusb.conf
> file?
> Seems I remember setting something like this in the initial DMK
> setup...have only done one DMK.
> Not sure if final unit will be a DMK or some other URI.
>  
> ...I know...a lot of questions!
>  
> Thanks....
> 
> 
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