John,
which version Raduino code are you using?
In the latest versions VFO tuning is disabled during TX in order to
prevent "FM-ing".
73 Allard PE1NWL
On Sat, June 24, 2017 18:26, John T P wrote:
Dear OM,
My bitx40 voice is vobling during transmit. I am using DDS VFO from OM
Farhan.
My understanding DDS frequency shall be extremely stable. It looks like
frequency slightly varying during voice modulation.
I have no idea how it is happening. Is there someone who can help me to
give some clue leading to the solution.
Awaiting some clues.
73ees
VU2JON
John
Allard PE1NWL