[arm-allstar] chinese mobile radio??

[Kevin Custer]

Brian,

By chance is the DMK URI you have and newer "URIxB"?  If so, the 
hardware has been redesigned to provide less attenuation in the audio 
path when using pin 25.  This is a requirement to make the URIxB have 
the same RX audio level as compared to a URIx.  This was accomplished by 
changing the value of R5 (previously a 470k) to a 39k.

Kevin W3KKC

On 4/26/2019 6:12 PM, "B Harvey via ARM-allstar" wrote:
> John,
>
>     I connected mine to a DMK-URI USB audio adapter before connecting to the
> RPi. For the most part, it was a direct pin to pin connection between the
> Alinco DB9 and the URI DB25 with the exception of one DC blocking capacitor
> at pin 9 of the DB25. For some reason, the standard input on my URI doesn't
> have enough gain on the standard receive pin. I can provide the pin wiring
> I used if you'd like.
>
>
> Brian / KKDOQ