General raspberry pi advise:
GNURadio is quite slow on raspberry pi if not built from source as this
will use the best compiler flags. The apt version is backwards compatible
and hence slower. Also volk needs to be built from source. Then you need to
run volk_profile to use the best available
Hello Frank, all,
i got Jackd2 installed on this RPI4 and GnuRadio works together with
Jack under some circumstances (start Qjackctl first, than GRC with the
script, a second start of the script is not anymore connecting to jack,
i have to restart jack to run it again.).
Latency is reasonable in
To Harald, Cinaed, and others interested in Morse code generation:
I have created a text to Morse code generator. See
https://github.com/duggabe/gr-morse-code-gen
Yes, the MorseGen.grc is for 3.8, but if you replicate the flowgraph
with 3.7 and use epy_block_0_0.py in an Embedded Python
Dear Frank, ALbin, Gorkem and all others,
thanks for prompt and prominent answers.
@Frank: i am also interested on your SW, yes, i know DttSP, there is a
link inside to some JACK stuff. I need to say that i am not familiar
with that audio system. What i am understanding from some reading is,
All right. Give me a day or two and I think I can find an archive of all
that stuff to pass along.
73
Frank
AB2KT/VE7
On Sat, Dec 28, 2019 at 1:40 PM Cinaed Simson
wrote:
> Cool! I would definitely be interested in the last option "generated CW
> tone from text input, either from a file"
>
>
Cool! I would definitely be interested in the last option "generated CW
tone from text input, either from a file"
-- Cinaed
On 12/28/19 11:18 AM, Frank Brickle wrote:
> Is there a JACK audio sink in Gnuradio these days?
>
> I'm not sure where they are housed, now, but I wrote a few programs
Is there a JACK audio sink in Gnuradio these days?
I'm not sure where they are housed, now, but I wrote a few programs to
generate CW this way some years ago. They depended on having JACK audio
input to the application. One of them could use either a straight key or
would work as a decent iambic
I did extensive experimentation with this and it's tricky to get the timing
good enough with GPIO.
Like Gorkem says mic/line is a good option. You can connect an oscillator
and just send a tone in, filter this and then just send it as "SSB" as a
pure tone in SSB is just a carrier. You can also
If I've understood your question correctly, how about the microphone /
audio input? If it's ac-coupled, you could use a simple oscillator. The
presence of the tone, gated by your morse key, triggers the cw. If you
don't want to build / provide an external oscillator, how about a software
