Michael-John Sakellaropoulos mj-sakellaropoulos

## APRS-airspyhf_rx.md

      
              5 files
            
          
              2 forks
            
          
              0 comments
            
          
              16 stars
            
          
                jj1bdx
                / APRS-airspyhf_rx.md
            
            
              Last active
              May 28, 2024 11:55
            
              
                APRS with rtl_fm, direwolf, and multimon-ng / and also airspyhf_rx
              
          
    APRS with airspyhf_rx, csdr, and direwolf

1200bps 144.660MHz

# Choose 11025Hz for the intermediate IF/audio frequency
airspyhf_rx -f 144.66 -a 768000 -r stdout | \
  csdr fir_decimate_cc 69.65986394557823129252 0.005 HAMMING | \
  csdr fmdemod_quadri_cf | csdr limit_ff 0.5 | csdr deemphasis_nfm_ff 11025 | \
  csdr fastagc_ff | csdr limit_ff 0.5 | csdr convert_f_s16 | \

/usr/local/bin/direwolf -c ~/bin/sdr-1200bps.conf -t 0 -T "%FT%TZ" -r 11025 -D 1 -B 1200 -

  
## android_drawing_stylus_performance.md

      
              1 file
            
          
              0 forks
            
          
              0 comments
            
          
              1 star
            
          
                Mercandj
                / android_drawing_stylus_performance.md
            
            
              Last active
              June 14, 2024 22:07
            
              
                How to improve stylus performances on Android using AndroidX
              
          
    Android drawing stylus performance

Goal, increase stylus performances on Android: mobile, tablet, Chromebooks...
AndroidX.graphics

Requirements: OpenGL architecture must let you draw "incrementally" (delta) or "fully"
Dependency