Hello Miroslav,
If I understand correctly, nothing changed on your setup except
the operating system? That generally doesn't sound right and I'd
recommend to look at the hardware side of things first and work
your way up. Can you connect a set of headphones into into the
radio's audio out jack and confirm you still can hear expected
demodulated audio? This will confirm a lot of basics. After
that, maybe you can do some live playback of audio as heard from
your souncard. Something like this would work assuming you
substitute in the correct sound card values and connect your
headphones to the appropreate soundcard output:
arecord -D plughw:CARD=Device,DEV=0 -t wav -f S16_LE -r 48000 -d 10 - | \
aplay -Dplughw:CARD=Device,DEV=0 -
Ps. I don't know why you oped to installed Debian 8.x aka..
Jessie but as mainline security updates ended back on June 2018.
It's only receiving critical (but much slower) security updates
through June 2020. Since you're starting with a new OS, why not
start with something that will have the longest life? That would
be Debian Buster.
--David
KI6ZHD
On 07/11/2019 03:36 AM, Miroslav Skoric
wrote:
Hi all,
I recently experienced a receiving problem with my APRS equipment.
(It is an old desktop comp with a new installation of Debian 8
with Mate GUI, integrated sound card, as well as a secondary PCI
sound card I added later to locate the issue, Rigblaster
Plug&Play modem interface, and a Chinese walkie radio.)
The cable from Rigblaster is connected to the ext spk/mic
connectors of the radio. The problem is when all parts are wired
together, the radio somehow becomes 'deaf', i.e. it does not show
any sign of incoming reception. No reception at all. But as soon
as the cable is pulled out, the radio recovers and RX normally. I
don't have any clue what might be wrong. By the way, the radio
sends beacons to the air (tested under Direwold/Xastir), so it
seems that the TX part is just fine.
Interestingly, all works well when a laptop is used instead of the
desktop. The laptop has its integrated sound card.
The only difference in between the desktop and the laptop is the
timing and probably content of the installed OS. The laptop was
installed several years ago with Debian 6 incl. Gnome, KDE, Mate,
..., then gradually upgraded via Debian 7, to Debian 8 now.
On the other side, the desktop was installed recently with Debian
8 (with Mate) because previous iterations of Debian disappeared
from archives as not supported any more.
It also seems that similar issues I have at some other desktop
machines that also started as Debian 6 and became Debian 8 over
time. But not on the laptop. It works well in APRS. Any similar
experience or idea what to do?
Misko YT7MPB
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