On Jul 1, 7:09*pm, rickman <gnu...@gmail.com> wrote:
> Why would you think it would not be possible or even hard? *FM is a
> very simple modulation scheme and using an NCO should produce very
> acceptable results.
>
> Rick
>
> On Jul 1, 11:11*am, Antti <Antti.Luk...@googlemail.com> wrote:
>
> > It is really possible to use FPGA to generate FM Radio signal DIRECTLY
> > in most cases there radio will pickup signal from PCB trace already
>
> > i did only a very little experiments (wrote in june issue also a
> > little)
>
> > even using audio signal to invert phase will produce signal that is
> > received
> > as FM modulation (with low modulation index) using simple NCO gives
> > much better results.
>
> > Antti

yes, after thinking a little yes

funny eveb PHASE inversion produces audible results,
with nco should be possible get yes, maybe quite acceptable
results, i did just a few tests, and i only had 1 bit audio to use
as modulation, and the result was pretty good actually,
much better than small piezo buzzer would do...

maybe I assumed that real modulation is required
but using nco clocked at 2x the output and modulating around
mid frequency, hm maybe even that isnt required the
receiver should overage it all and receive anyway

Antti