SAQ transmission of December 24th, 2018

by Alberto I2PHD                                  

Reception of the December 24th, 2018 transmission of the SAQ commemorative station,
done by Alberto I2PHD in JN45sl, using the ARM Radio SDR receiver described here  :

The audio of the transmission can be heard here


The ARM Radio hardware was fed from a preamplified aperiodic loop with a low pass filter to
clean the band.
  Inside the low pass box there is also a galvanic insulator.



This is the schematic of the low pass filter :

And this is its Bode plot, as computed by LTSpice :



It is possible to watch a short video about the SAQ reception by clicking here


73  Alberto  I2PHD