thank you for the suggestion.
However, doesn't help. Bitx40 is still not mounted in case, The wires
for speaker and volume control are the only ones near each other and
both are twisted i.e. volume control wires are all twisted together, the
two wires for the speaker are also twisted together, makes everything
tidier and is my normal course.
I am not using a raduino but rather feeding the bitx with an external
analog vfo connected through RG174 to the DDS connector on board the
bitx40.
I haven't had time to poke around at this problem so far today. Perhaps
I will find a wee bit of time later this evening.
cheers, Graham ve3gtc
+
+`
On 3/27/2017, "T Williams via Groups.Io" <n41w124@...>
wrote:
To eliminate the audio squeal, try rearranging wires. ??Twist pairs that go together. ?? Route all wiring away from the Raduino board. ??Neatly bundle unused wires and put them away from the wiring that is in use. ??This worked for me.
TW
