thanks a lot.?

But I don't have enough know how to upgrade software.?

Is there any other methods to make it stable??

How the FM ing is happening? Is it from voltage??

73ees?

VU2JON?

John?

On Jun 25, 2017 12:26 AM, "Allard PE1NWL" <pe1nwl@...> wrote:

v1.01 is the original stock version.
Try to upgrade to Aurduino-v1.15.1, download it from

It has VFO disabled during TX to prevent FM-ing (and many other extra
features)

See also the WIKI at /g/BITX20/wiki/Raduino-Topics for
Arduino related instructions.

73 Allard PE1NWL

On Sat, June 24, 2017 20:49, John T P wrote:
> I am using regulated power supply 13.5V, stable to 0.1V.
>
> I baught it just two months ago. Hence I believe it is latest version. It
> is showing version 1.01 during start up.
>
> 73ees
>
> VU2JON
> John
>
> On Jun 24, 2017 10:28 PM, "Bill Meara via Groups.Io" <n2cqr=
> [email protected]> wrote:
>
> Jon:? What are you using for the power supply?? ?73? Bill N2CQR
>
>
> On Saturday, June 24, 2017 12:40 PM, John T P <tpjohn@...> wrote:
>
>
> Dear OM,
>
> My bitx40 voice is wobbling 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
>
>
>
>