Here's what I get from alsamixer:
trunktracker(a)tampabay.rr.com
From: op25-dev(a)yahoogroups.com [mailto:op25-dev@yahoogroups.com]
Sent: Friday, November 30, 2018 8:44 PM
To: op25-dev(a)yahoogroups.com
Subject: RE: [op25-dev] Re: Beginner's Guide To Setting Up OP25 From Scratch
Congrats. Incrementing "tsbks" is a win.
Run "alsamixer" in another terminal window and see if python is muted or
just turned down low.
--
Apu