Re: [Discuss-gnuradio] Create a general block using a GRC 'misc Python block'

[Barry Duggan]

Thanks Albin,

This is a work in progress - there are several things I plan to do.

Yes, as it stands, it needs the filter for key clicks. I had tried to 
send the keying signal to a GPIO pin and do the key click filtering in 
hardware, but the timing didn't work out right.

I must give credit to Marcus Mueller for the repeat block method. He 
suggested that when I was building my RTTY terminal unit.

Please explain "You can use the rotator block to generate a complex tone 
to send morse
code with an SDR transmitter." The more I can do in GR, the better ;)

My next steps are:
1) Create a QT GUI for text input to replace stdin.
2) Add a QT GUI Range knob to set the frequency of the audio. My thought 
is that it could be used as fine tuning / offset tuning of the 
transmitter. If I use a crystal in the middle of the CW portion of 80 or 
40 meters and switch between upper and lower sidebands, it would cover a 
lot of the allocation. It's an interesting alternative to frequency 
synthesis.
3) Handle characters which are not in the code table.

I welcome all ideas and contributions!
---
Barry Duggan KV4FV

P.S. Maybe we should make a new thread. This subject line doesn't 
reflect the current content.

On 2019-09-09 06:18, Albin Stigö wrote:
> Nice!
>
> I like the way you generate morse code using the repeat block!
>
> I don't see that the keying is filtered in any way which will lead to
> clicks... some kind of symbol filter would be nice!
> You can use the rotator block to generate a complex tone to send morse
> code with an SDR transmitter.
>
>
> --Albin
>
> On Sun, Sep 8, 2019 at 6:39 PM Barry Duggan <address@hidden> wrote:
> > FYI, I have created a repository for my Morse code generator:
> > https://github.com/duggabe/gr-morse-code-gen
> >
> > Cheers!
> > --
> > Barry Duggan
> >
> > On Fri, 23 Aug 2019 10:00:15 -0400, Barry Duggan wrote:
> >
> > <snip>
> > If you are interested in the finished Morse code generator, see
> > https://pastebin.com/XJqDzh6K
> >
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