[App_rpt-users] Mastr II and usbradio

[Kevin Custer]

On 9/19/2015 8:56 PM, Jim Duuuude wrote:
> I just spoke with the "Mastr II Guru", and he said that if you take 
> the discriminator audio
> (off of volume/squelch high), it should work with chan_usbradio quite 
> well.

Depending on the type of FOB, yes, there should be no problem.  The URI 
and RIM work fine with the (large) amount of audio from the VOL/SQ HI.  
If using a modified or converted USB audio adapter, just make sure the 
audio is sufficiently reduced so the MIC input isn't over-driven.

>
> Remember, for transmit, you need to feed it SEPARATE "program audio" 
> and CTCSS
> (you will need to use BOTH outputs of the USB device separately).

Not to argue with the MASTR II Guru, whom ever that may be, but 
composite works fine on MASTR II's that have the FM ICOM - - feeding the 
modulation pin directly.  Yes, this requires pre-emphasis and limiting 
turned on in the software.

If the M2 is a phase modulated type, then yes, use separate audio and 
CTCSS outputs from the radio interface thingy.  Feed the MIC HI with the 
voice audio and the Channel Guard input with the CTCSS audio.

Kevin Custer
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