com and it’s here that I realized
my audio chip wasn’t working.
No matter how I tried, I couldn’t
tune my Ubitx to a point where
the audio was distortion-free. The
audio appeared to be better when
my Ubitx first powered up, but
soon, even those few moments of
audio clarity disappeared, and it
was impossible to understand SSB
audio. My audio chip had failed
like the ones being reported on the
forums.
Replacing the Bad
Audio Chip
WThe defective audio chip was in a hard to get to spot
and somewhat challenging to remove. As I replaced the
defective chip with the JRC2073D, I made sure to use a
chip socket, so should the new chip have to be replaced,
There are a couple ways to remove the defective chip.
I did it by clipping the pins of the chip from the top and
then removing each pin one at a time. As I replaced the
TS-4900
Computer on Module
WiFi and Bluetooth Enabled
1 GHz i.MX
6 Computer Module
Single or Quad Core
Choose your own adventure.
TS-7970
Single Board Computer
1 GHz i.MX
6 ARMCPU
Single or Quad Core
Up to 2 GB DDR3 RAM
4 GB MLC eMMC Flash
WiFi and Bluetooth
www.embeddedARM.com
Board Support Packages,
Source Code and Toolchains
Available
11. My Microbitx transceiver
with enclosure and speaker.
September/October 2018 67
