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 :
http://armradio.weaksignals.com
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