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Transmit static sound before signal, time (ms) at frequency (Hz) ... minimodem ... ... --vox-t 100 --vox-f 1500 ... ...
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I have installed minimodem but that other app i cant install and get this error
### NOCARRIER ndata=1 confidence=1.539 ampl=0.000 bps=109.99 (0.0% slow) ###
### CARRIER 110 @ 1250.0 Hz ###
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I know this is a known issue. But I am having trouble with it. If I run:
`/rtl_fm_python_web.py -M usb -f 434.562M | aplay -r 32000 -f S16_LE -t raw -c 1
`
The my carrier (minimodem) doesn't pick u…
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is posible to send and recive small data from old PC where in not available INTERNET conection ?
In this area is available voice GSM signal and old mobile phone.
for this i want to:
1. conect …
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I am interested in decoding an AFSK signal that uses 1200/1800 Hz mark/space, but is not NRZI like Bell 202. Each bit is either 1 cycle of 1200 Hz or 1.5 cycles of 1800 Hz, with continuous phase. Pa…
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Any particular reason not to propose FSK modems ?
Just asking, out of curiosity :)
Nice job on the project, though. Nicely written and concise code. #
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I am trying to transmit portions of standard NMEA sentences like so:
`pi@raspberrypi ~/gpslhf $ echo "4135.1898,N,09342.6185,W" | minimodem -t 1200`
I get a long delay after the end of the tone …
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Thank you for creating the amazing minimodem. I have ported it to a video game console to try and retrieve my save game data over audio. I am successfully able to transmit and decode small messages (~…
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Given that you are using only 2 symbols I'd be faster to use a goertzel filter instead of using a full FFT, this will also reduce the dependecy with FFTW and will simplify the fsk part in size and com…
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Would this be feasible? Thoughts? I feel like a preshared key would work with some public private key encryption method. I wonder if there would be a way to do some type of Tonal key as well. Like emi…