(1) There are several Yaesu groups on Facebook. (2) Contact the company where you bought the radio. (3) A Google search yields several hits on the subject.

73 - KZ4KY

On Wed, Feb 3, 2021 at 7:05 AM Mike Markowski <mike.ab3ap@gmail.com> wrote:
In the hope of supporting the ftm-400xdr, over the course of 2 months I
wrote twice to Yaesu asking if a programming guide is available.  Both
times, no reply.  Yet their tech support replies quickly (relatively
speaking!) to other questions.

Does anyone know of a source for the info, better email address, etc.?

Tnx es 73!
Mike ab3ap
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