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From: | Alex Humberstone |
Subject: | Re: FM Transmission with a vector of bits |
Date: | Thu, 2 Jul 2020 11:21:22 -0500 |
Hi Anthony:
Check out this link. The author is using a Pluto but he developed a flowgraph to transmit a vector that represents Morse code. Pretty well-explained. The ideas you need are likely in there.
Kevin
> On Jul 2, 2020, at 8:40 AM, Anthony B. <anthonyld508@gmail.com> wrote:
>
> Hello all,
>
> I am trying to build a very simple FM Transmitter using a flowgraph as a reference. The principle is the following :
> Signal source of 48 kHz Sample Rate > Rational Resampler up to 360 kHz Sample Rate > Add Constant 1 > VCO at 360 kHz with a carrier frequency at 120 kHz.
>
> What I am trying to do right now is to replace the signal source with a vector of bits coming from another application to then modulate it with FM.
> I've seen many examples of this kind of transmitter with audio input, but I don't understand how to pass it a vector of bits and to get the expected result.
> Is there something I should consider before going to the VCO ? Is the principle only working with periodic signals as input ?
>
> Thanks for your help!
>
> Anthony
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