I am trying to receive data which is transmitted at 144.025 Mhz, using RTL-SDR with the below command and it works perfectly (even tested with local fm radio and the audio is good)..
rtl_fm -f 144.025e6 -s 200000 -r 48000 - | aplay -r 48000 -f S16_LE
But when i tried to decode the received signal using minimodem using the below command, i am getting some breaking audio and i am not able to decode the
rtl_fm -f 144.025e6 -s 200000 -r 48000 - | aplay -r 48000 -f S16_LE | minimodem --rx 1200
Later i notice, when i am playing any audio (like youtube) and if i run minimodem --rx 1200 in terminal, at once the audio is breaking or distorted with crackling sound..
I am using raspberry pi - stretch os. Can anyone please tell me where i am doing mistake and is there any other way to decode the data from command line (terminal).. Thanks in advance.